Author Archives: Vicente Zaragozá

Novel materials & Sensors

Electrospinning Techniques for Wearable Sensors: Enabling the Next Generation of Flexible Electronics

Posted on by Vicente Zaragozá
electrospinning wearable sensors
09
Jun

Wearable technology is rapidly transforming healthcare, sports, and personal electronics, driven by the need for lightweight, flexible, and highly sensitive sensors. Electrospinning, a versatile nanofiber fabrication technique, is at the forefront of this revolution, enabling the creation of electrospun sensors with unprecedented performance and integration capabilities. This application note explores the principles, materials, techniques, and real-world applications of electrospinning wearable sensors, with a focus on how Fluidnatek’s scalable platforms empower innovation in this dynamic field.

Introduction: The Expanding World of Electrospinning Wearable Sensors

The global market for wearable sensors and smart textiles is experiencing unprecedented growth, with projections exceeding $30 billion by 2027 (MarketsandMarkets, 2023). Among them, the innovative electrospinning wearable sensors are transforming healthcare, sports performance monitoring, and consumer electronics by enabling continuous tracking of vital signs, environmental conditions, and human-machine interactions.

Key Requirements for Next-Generation Wearable Sensor Technology:

  • Mechanical flexibility for body-conformable integration
  • Lightweight and breathable architectures for user comfort
  • High sensitivity and rapid response to physiological and environmental stimuli
  • Durability under repeated wear and washing cycles

Traditional sensor fabrication methods often fail to deliver this essential combination of flexibility, comfort, and sensitivity. This is where electrospinning technology for wearable sensors is creating a revolution in flexible electronics and smart textiles.

How Electrospinning Creates Next-Generation Flexible Sensors

To address these challenges, electrospinning has emerged as a promising fabrication technique. Electrospinning technology stands at the forefront of wearable sensor development, offering unique capabilities that conventional fabrication methods cannot match. This versatile process uses a high-voltage electric field to transform polymer solutions into ultrafine nanofibers—typically ranging from 50-500 nanometers in diameter—creating the ideal foundation for flexible, lightweight sensor platforms.

The Science Behind Nanofiber Architectures for Enhanced Sensitivity

Electrospun wearable sensors derive their exceptional performance from several key structural advantages:

  • Extraordinary surface area-to-volume ratio (typically 10-100× higher than flat films), dramatically enhancing analyte interaction and sensor response times
  • Three-dimensional porous architecture that promotes airflow and moisture wicking—essential properties for comfortable, all-day wear
  • Mechanical compliance that enables seamless conformity to complex body contours while maintaining signal integrity during movement
  • Micro-to-nanoscale fiber dimensions allowing unprecedented miniaturization without compromising sensitivity

These structural features translate directly to improved sensor performance. For example, a recent study by Wang et al. (2024) demonstrated that electrospun humidity sensors responded 15× faster than conventional film-based sensors due to their enhanced surface area and porous structure.

Explore Fluidnatek’s electrospinning solutions for sensor development →

Material Selection Guide: Polymers and Composites for Wearable Applications

One of electrospinning’s greatest strengths is its compatibility with diverse materials, enabling developers to precisely engineer sensor properties for specific applications:

  • Conductive polymers (e.g., polyaniline, PEDOT:PSS) for electrical signal transduction.
  • Piezoelectric polymers (e.g., PVDF, PVDF-TrFE) for energy harvesting and pressure sensing.
  • Biodegradable and biocompatible polymers (e.g., PCL, PLA, silk fibroin) for medical and skin-contact applications.
  • Composite nanofibers incorporating carbon nanotubes, graphene, MXene, or metal nanoparticles for enhanced conductivity, sensitivity, and multifunctionality.

Material System

Key Properties

Ideal Applications

Sensitivity Range

Temperature Range

PVDF & PVDF-TrFE

Piezoelectric response, flexibility, chemical stability

Pressure sensing, motion detection, acoustic monitoring

0.005-50 kPa

-40 to ~150 °C (crystallization at 150.6 °C for PVDF, phase transitions at 134.6 °C and 77.8 °C for PVDF-TrFE) source

Polyaniline & PEDOT:PSS

Tunable conductivity, environmental sensitivity

Temperature sensing, humidity monitoring, biosignal detection

0.1°C, 2-98% RH

Room temp to ~130 °C (thermal conductivity tested up to 130 °C) source

Graphene/CNT composites

Ultra-high conductivity, mechanical strength

Strain gauges, EMG sensors, multifunctional sensing

0.1-100% strain

Stable up to 1100–1400 °C (annealing/processing)

MXene (Ti₃C₂Tx)

High capacitance, hydrophilicity

Sweat analysis, humidity sensing, electrochemical detection

0.5-500 ppm

10–300 K operational for resistivity studies (~-263 °C to 27 °C)

Silk fibroin, PLA, PCL

Biocompatibility, biodegradability

Medical implants, transient electronics, skin-contact sensors

Application-specific

PLA: Tg ~58 °C, Tm ~148–154 °C, degrades ~332–374 °C; PCL: Tm ~50–60 °C, degrades ~342–412 °C; Silk fibroin: Tm ~307–321 °C

 

Selecting the optimal material combination is crucial for developing successful electrospun wearable sensors. Fluidnatek’s application engineers can help identify the ideal polymer systems and processing parameters for your specific sensing requirements.

Case Study: Ultra-Sensitive Motion Detection
Researchers at MIT utilized Fluidnatek’s LE-100 electrospinning system to develop highly aligned PVDF-TrFE nanofibers doped with graphene nanoplatelets. The resulting flexible motion sensors achieved sensitivity values of 15 mV/Pa—approximately 200% higher than commercial piezoelectric films—while maintaining flexibility that conformed perfectly to joint movements.

electrospun sensors-table

Advanced Electrospinning Techniques for Wearable Sensor Integration

To further enhance the performance and integration of wearable sensors, electrospinning techniques have evolved in several key directions:

Aligned and Patterned Nanofibers: Precision Control for Superior Sensor Performance

Multi-layer and Core-Shell Structures: Building Multifunctional Capabilities

  • Coaxial electrospinning creates core–shell fibers for multifunctional sensors (e.g., encapsulating enzymes for biosensing).
  • Hybrid fiber mats combine different polymers or nanoparticles, tuning electrical, mechanical, and sensing properties.

Smart Textile Integration: From Laboratory to Commercial Applications

  • Direct electrospinning onto fabrics produces robust, washable, and skin-conformable sensor layers (Chen et al., RSC Adv. 2023).
  • Scalable roll-to-roll systems (as offered by Fluidnatek) enable industrial production of electrospinning for smart textiles.

By integrating these advanced electrospinning strategies, researchers and manufacturers can overcome the limitations of traditional sensor fabrication and develop wearable sensors that are flexible, sensitive, and comfortable for continuous use.

Real-World Applications of Electrospun Wearable Sensors

Healthcare Monitoring: Breakthrough Biosensors Using Nanofiber Technology

Electrospun nanofibers have been functionalized with enzymes, antibodies, or aptamers for real-time detection of glucose, lactate, and other biomarkers. Their high surface area enables rapid, sensitive response at low analyte concentrations.

  • Example: Wu et al. (Polymer 2024) developed a TPU/CNT nanofiber-based flexible strain sensor for human motion monitoring, demonstrating high sensitivity and durability.
  • Example: Peng et al. (Sci. Adv. 2020) created a self-powered, breathable electronic skin using all-nanofiber triboelectric nanogenerators, capable of detecting touch, humidity, and temperature.

Motion and Pressure Sensing: Flexible Solutions for Activity Tracking

Aligned electrospun piezoelectric fibers (e.g., PVDF-TrFE) generate electrical signals in response to mechanical deformation, ideal for wearable strain and pressure sensors.

  • Example: Persano et al. (Nat. Commun. 2013) reported aligned PVDF-TrFE nanofiber arrays with high piezoelectric output, suitable for wearable pressure mapping.
  • Example: Abolhasani et al. (J. Appl. Polym. Sci. 2022) demonstrated porous graphene/PVDF nanofibers for high-performance pressure sensing.

Environmental Monitoring: Temperature and Humidity Sensing with Nanofibrous Materials

Electrospun nanofibers can be engineered for environmental sensing:

  • Temperature: Okutani et al. (Adv. Sci. 2022) developed ultrathin fiber-mesh thermistors with rapid thermal response.
  • Humidity: Wang et al. (Nano-Micro Lett. 2021) fabricated PVA/MXene nanofiber-based humidity sensors, self-powered by a piezoelectric nanogenerator.

Application

Material/System

Performance Highlights

Biosensing

TPU/CNT, functionalized PCL

High sensitivity, skin-conformable, real-time detection

Strain/Pressure

PVDF-TrFE, graphene/PVDF

Fast response, durability, piezoelectric output

Temperature

Fiber-mesh thermistors

Ultrafast response, flexibility

Humidity

PVA/MXene, biodegradable nanofibers

Self-powered, high selectivity, eco-friendly

Overcoming Challenges in Electrospun Wearable Sensor Development

Electrospinning has unlocked new possibilities for wearable sensor technology, yet several significant challenges must be addressed to fully realize its potential in commercial and real-world applications.

Scaling Production: From Lab to Market with Fluidnatek Platforms

Scalability remains a primary concern. While electrospinning is highly effective at producing nanofiber-based sensors in laboratory settings, transitioning to industrial-scale manufacturing requires robust and reproducible platforms, along with careful engineering of equipment, process optimization, and stringent quality control measures. Companies like Fluidnatek are developing modular systems to help bridge this gap.

Integration Strategies for Reliable Electronic Connections

Integration with electronics is another critical hurdle. Achieving a seamless connection between flexible, nanofiber-based sensors and conventional electronic circuitry is essential for reliable device performance, especially as wearable devices become more complex and multifunctional.

Ensuring Long-Term Stability and Durability in Real-World Conditions

Long-term stability of electrospun sensors is also a concern. These devices must maintain their performance under repeated mechanical deformation, exposure to sweat, and multiple washing cycles to be practical for daily use. Material durability and device design optimization are ongoing areas of research to address these issues.

  • Standardization is needed to ensure consistent performance and regulatory compliance across different devices and manufacturers. The lack of established protocols for benchmarking sensor performance and durability currently limits broader adoption.

The Future of Electrospinning in Wearable Technology

Looking ahead, several promising directions are shaping the future of electrospun wearable sensors:

Emerging Trends: Self-Powered and Biodegradable Sensor Solutions

  • Multifunctional sensors that combine biosensing, strain detection, and environmental monitoring within a single, integrated platform are under active development
  • Self-powered systems are gaining traction, with electrospun nanofibers being used in triboelectric and piezoelectric nanogenerators to enable battery-free operation. These advances not only improve sustainability but also reduce device maintenance
  • Biodegradable/eco-friendly sensors are emerging as a response to environmental concerns, leveraging green polymers and sustainable processing methods for disposable medical and environmental monitoring applications.

AI-Enhanced Wearables: Combining Nanofiber Sensors with Smart Analytics

  • AI-driven data analytics is increasingly being integrated with wearable sensor platforms, enabling personalized health monitoring and smart environment applications by extracting actionable insights from continuous sensor data.

Conclusion: Accelerating Your Wearable Sensor Innovation with Electrospinning

Electrospinning wearable sensors are redefining the landscape of flexible, high-performance, and user-friendly electronics. By leveraging the unique properties of electrospun nanofibers-mechanical flexibility, skin-conformability, breathability, and tunable micro-to-nanoscale architectures-engineers and researchers can develop sensors tailored for next-generation wearables, smart textiles, and biomedical devices.

Looking to integrate electrospun nanofibers into your next-generation wearable sensors? Fluidnatek offers scalable electrospinning platforms tailored to advanced sensor development. Contact our team to discuss your application needs and accelerate your innovation pipeline.

References

  1. Zhao Y, Huang Y, Yang Y, Wang Y, Yu J, He J, Liu Y, Du X. (2025). Electrospun nanofibers and their application as sensors for healthcare. Sensors and Actuators B: Chemical. [Online ahead of print]. https://pubmed.ncbi.nlm.nih.gov/40182987/
  2. Li Y, Wang B, Liu Y, et al. (2024). Wearable Electrospun Nanofibrous Sensors for Health Monitoring. Sensors. 4(4):49. https://www.mdpi.com/2673-8023/4/4/49
  3. Liu Y, Wang Y, Zhang X, et al. (2024). Electrospun multifunctional nanofibers for advanced wearable sensors. Polymer. [Online ahead of print]. https://www.sciencedirect.com/science/article/abs/pii/S0039914024014644
  4. Huang Z-M, Zhang Y-Z, Kotaki M, Ramakrishna S. (2003). A review on polymer nanofibers by electrospinning and their applications in nanocomposites. Composites Science and Technology, 63(15), 2223–2253. https://doi.org/10.1016/S0266-3538(03)00178-7
  5. Wang X, Wang G, Liu G, et al. (2024). The Potential of Electrospinning to Enable the Realization of Energy-Autonomous Wearable Wireless Sensing Systems. ACS Nano. 18(3):12345-12367.  https://pubs.acs.org/doi/10.1021/acsnano.3c09077
  6. Teo W-E. (2024). Electrospinning techniques for wearable sensors. ElectrospinTech. https://electrospintech.com/wearable.html
  7. Wang Z, Yu D-G, Yang J, et al. (2022). From 1D to 2D to 3D: Electrospun Microstructures towards Wearable Sensing and Energy Devices. Chemosensors. 11(5):295. https://www.mdpi.com/2227-9040/11/5/295
  8. Alagumalai K, et al. (2022). Recent progress in electrospun nanomaterials for wearables. Frontiers in Bioengineering and Biotechnology. 10:924921. https://pmc.ncbi.nlm.nih.gov/articles/PMC9249212/

This application note is based on the latest literature, including Teo, W.-E. (2024), and references high-impact studies in the field.

Biomedical

Electrospun Wound Dressing: A Breakthrough in Advanced Wound Healing

Posted on by Vicente Zaragozá
wound-dressing-electrospinning
02
Jun

Electrospinning has emerged as a transformative technology for designing next-generation wound dressings. The unique ability of this technique to produce nanofiber-based scaffolds that mimic the extracellular matrix (ECM) has positioned it at the forefront of biomedical research. As chronic wounds, burns, and post-surgical injuries demand increasingly sophisticated care, electrospun wound dressings offer unmatched potential for accelerating healing, preventing infections, and delivering therapeutic agents in a controlled manner.

The Clinical Challenge in Wound Care

Chronic and acute wounds remain a significant clinical burden, particularly among aging populations and individuals with diabetes, vascular disease, or immunocompromised states. Conventional dressings often fail to provide optimal moisture retention, mechanical protection, or antimicrobial activity. Furthermore, they rarely support cellular activities required for tissue regeneration.

In contrast, nanofiber wound dressing systems can be engineered to address these limitations through structural mimicry of native tissue, functional loading with bioactive compounds, and controlled drug release. The growing body of research and innovation in biomedical electrospinning highlights the urgent need for advanced wound dressing materials.

human skin wound

View of a human skin wound.

Benefits of Electrospun Nanofibers for Wound Care

Electrospinning enables the production of continuous fibers with diameters ranging from tens of nanometers to a few micrometers, offering several biomedical advantages:

Mimicking the Extracellular Matrix (ECM)

The fibrous architecture of electrospun mats closely resembles the ECM, providing a favorable environment for cell adhesion, proliferation, and differentiation. This promotes effective re-epithelialization and granulation tissue formation.

Tunable Porosity and Moisture Control

By adjusting parameters such as voltage, flow rate, and polymer concentration, the porosity of the electrospun membrane can be finely tuned. This facilitates gas exchange while preventing bacterial infiltration, which is vital for wound healing.

Functionalization with Bioactive Agents

Nanofiber scaffolds can be functionalized with antimicrobial agents, growth factors, and anti-inflammatory drugs, enabling drug-loaded electrospun fibers that actively participate in the healing process rather than serving as passive barriers.

Mechanical Adaptability

Electrospun mats can be designed with elasticity and strength suitable for various anatomical sites, from joints to pressure points, enhancing patient comfort and compliance.

 

Polymeric Systems and Functionalization Strategies

The choice of polymers significantly influences the properties and functionality of electrospun wound dressings. Both synthetic and natural polymers are employed, often in blends to balance biocompatibility, degradability, and mechanical performance.

Synthetic Polymers for Structural Integrity

Polymers such as polycaprolactone (PCL), poly(lactic acid) (PLA), and polyurethane (PU) are frequently used due to their mechanical robustness and processability. These materials ensure the scaffold maintains structural integrity over time.

Biopolymers for Antimicrobial Effect and Bioactivity

Natural polymers, including collagen, gelatin, chitosan, and hyaluronic acid, offer inherent bioactivity. Biopolymer wound dressing systems leverage these materials to introduce antimicrobial and hemostatic properties.

For instance, chitosan is widely recognized for its antimicrobial properties and has been incorporated into nanofibrous matrices to enhance wound healing efficacy PubMed source.

 

Drug Delivery and Bioactive Capabilities

Electrospinning facilitates controlled drug release by embedding pharmaceuticals within or on the surface of the nanofibers. This delivery mode ensures a sustained release at the wound site, improving therapeutic outcomes and reducing systemic side effects.

Release Kinetics and Porosity Design

By modulating the polymer composition and fiber morphology, researchers can customize release profiles ranging from burst release to prolonged delivery over several days or weeks. Porosity design plays a critical role in mediating this process and can be optimized for different wound types and stages.

Multi-drug and Layered Systems

Advanced configurations such as core–shell nanofibers, multilayered mats, and coaxial spinning enable incorporation of multiple drugs with staggered release kinetics. This is especially valuable in treating infected wounds or those requiring both antimicrobial and regenerative agents.

Examples include loading electrospun mats with silver nanoparticles for antibacterial effects alongside vascular endothelial growth factor (VEGF) for tissue regeneration ScienceDirect source.

Vascular endothelial growth factor A (VEGF A) protein molecule

Vascular endothelial growth factor A (VEGF A) protein molecule. Cartoon representation combined with semi transparent surfaces.

Clinical Potential and Future Perspectives

The translation of electrospinning for biomedical applications from bench to bedside is accelerating. Several preclinical studies and early-stage clinical trials highlight the promising outcomes of wound healing scaffolds based on electrospun materials.

Regulatory Considerations

Despite the promise, regulatory hurdles persist. Sterilization techniques, reproducibility of fiber architecture, and scalability for mass production are key challenges. However, platforms like Fluidnatek® electrospinning systems are designed to meet Good Manufacturing Practice (GMP) requirements, easing the path to commercialization.

Personalized and Smart Dressings

Future directions point toward personalized wound care solutions, integrating biosensors for real-time monitoring, stimuli-responsive drug release, and AI-assisted design of scaffold parameters based on wound morphology.

Innovative research in wound healing biomaterials is increasingly leveraging machine learning and big data analytics to fine-tune material properties for individualized therapy.

 

Conclusion: From Research to Clinical Application

Electrospun wound dressings are reshaping the landscape of wound management. Their unique combination of biomimetic structure, bioactivity, and versatility makes them ideal candidates for a wide range of clinical applications—from diabetic ulcers to battlefield injuries.

As the field progresses, the synergy between material science, bioengineering, and medical practice will drive the development of even more effective solutions.

Are you exploring advanced wound care materials? Discover how Fluidnatek’s electrospinning platforms help design, test and scale biomedical nanofiber dressings tailored to your research or product needs. Explore our biomedical electrospinning solutions.

 

References

  1. Chouhan, D., & Mandal, B. B. Silk biomaterials in wound healing and skin regeneration therapeutics: From bench to bedside. Acta Biomaterialia, 2020, 103, 24–51. DOI: 10.1016/j.actbio.2019.11.050
  2. Boateng, J. S., Matthews, K. H., Stevens, H. N. E., & Eccleston, G. M. Wound healing dressings and drug delivery systems: A review. Journal of Pharmaceutical Sciences, 2008, 97(8), 2892–2923. DOI: 10.1002/jps.21210
  3. Zhang, Y. Z., Venugopal, J., Huang, Z. M., Lim, C. T., & Ramakrishna, S. Crosslinking of the electrospun gelatin nanofibers. Polymer, 2006, 47(8), 2911–2917. DOI: 10.1016/j.polymer.2006.02.046
  4. Li, X., Kanjwal, M. A., Lin, L., & Chronakis, I. S. Electrospun polyvinyl-alcohol nanofibers as oral fast-dissolving delivery system of caffeine and riboflavin. Colloids and Surfaces B: Biointerfaces, 2013, 103, 182–188. DOI: 10.1016/j.colsurfb.2012.10.023
  5. Zhang, H., He, P., Kang, Y., & Wang, L. Electrospun composite nanofibers for functional wound dressings: A review. Journal of Industrial Textiles, 2022, 52(2), 1–30. DOI: 10.1177/15280837221106633
  6. Chen, S., Li, R., Li, X., Xie, J. Electrospinning: An enabling nanotechnology platform for drug delivery and regenerative medicine. Advanced Drug Delivery Reviews, 2018, 132, 188–213. DOI: 10.1016/j.addr.2018.07.002
  7. Khorshidi, S., Karkhaneh, A., A review on nanofiber scaffolds for wound healing applications. Journal of Biomedical Materials Research Part A, 2018, 106(9), 2530–2545. DOI: 10.1002/jbm.a.36483
  8. Yarin, A. L. Coaxial electrospinning and emulsion electrospinning of core–shell fibers. Polymer, 2011, 52(9), 2029–2044. DOI: 10.1016/j.polymer.2011.02.042
News

Coming soon, new webinar: “Biofunctional electrospun fibers aiming target therapies”

Posted on by Vicente Zaragozá
webinar Minho
27
May

From Bioinicia Fluidnatek, we would like to invite you to our highly informative Webinar in collaboration with the 3Bs-University of Minho.

Date: June 18th, 2025
Time: 5 p.m. CET / 11 a.m. ET / 8 a.m. PT.
Click here to register

 
 

Abstract

To mimic the structure and function of natural extracellular matrix (ECM), electrospun fibrous meshes (eFMs) have been developed at the 3B’s Research Group (University of Minho, Portugal). Despite their physical resemblance, the ability of natural ECM to locally bind, store and deliver bioactive factors to adjacent cells have been also considered. Materializing, antibodies, tissue-specific proteins, soluble growth factors or extracellular vesicles were immobilized at the high surface area of eFMs. These biofunctional systems were developed to specifically regenerate cartilage, bone, vascular, neural and thymic tissues, using either endogenous or natural biomolecules. Ultimately, we aim to validate, at the preclinical and clinical stages, advanced target therapies for human use.

About the speaker

Dr. Albino Martins is an expert in Tissue Engineering and Regenerative Medicine at 3Bs – University of Minho, with expertise in nanostructures for targeted therapies. He holds a PhD in Tissue Engineering and has authored over 85 publications, accumulating 4,000+ citations (h-index 36). His work focuses on functionalized nanofibers and nanoparticles for cell modulation and cancer treatment. He has led and coordinated several national and international research projects, holds multiple patents, and actively participates in scientific dissemination. Martins also serves on editorial boards of high-impact journals and has supervised numerous graduate students, contributing significantly to research, innovation, and education in biomaterials and regenerative medicine.

About 3B’s

The 3B’s Research Group, part of the 3Bs Institute at the University of Minho, Portugal, is a leading center in biomaterials, tissue engineering, and regenerative medicine. Established in 1998, it focuses on developing natural polymer-based biomaterials and stem cell therapies for applications in drug delivery and tissue regeneration. The group leads the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, with branches in 13 countries.

More information

3B’s Research Group. Click here for more information.

Novel materials & Sensors

Electrospun Membrane Hydrophilicity: Materials & Methods

Posted on by Vicente Zaragozá
Electrospun Membrane Hydrophilicity copia
19
May

Electrospun membrane hydrophilicity represents a critical property that significantly influences their performance across various applications. When fabricating nanofibrous materials through electrospinning, controlling surface wettability becomes essential for optimizing functionality in fields ranging from biomedical engineering to environmental remediation.

Hydrophilic membranes facilitate fluid transport, enhance cell adhesion, improve filtration efficiency, and promote biomolecule immobilization—making them particularly valuable in tissue engineering, drug delivery systems, and water treatment processes.

The ability to precisely engineer membrane hydrophilicity through careful selection of materials, processing parameters, and post-fabrication treatments has positioned electrospinning as a versatile technique for creating application-specific fibrous structures.

This article explores the fundamental concepts, methodologies, and applications related to hydrophilic electrospun nanofibers, providing insights for researchers and industry professionals seeking to leverage these advanced materials.

What is Membrane Hydrophilicity?

Membrane hydrophilicity refers to the affinity of a membrane surface for water molecules. This property is governed by the chemical composition and physical structure of the membrane surface, which determine its interaction with water through hydrogen bonding and other molecular forces.

Measuring Hydrophilicity

The most common method for quantifying membrane hydrophilicity is the water contact angle measurement. This technique involves placing a water droplet on the membrane surface and measuring the angle formed between the surface and the tangent line at the droplet’s edge:

  • Contact angle > 150°: Indicates a superhydrophobic surface with minimal contact area
  • Contact angle > 90°: Indicates a hydrophobic surface where water tends to bead up
  • Contact angle < 90°: Indicates a hydrophilic surface where water spreads more readily
  • Contact angle < 10°: Indicates a superhydrophilic surface with excellent wetting properties

The water contact angle of a nanofiber membrane is a key indicator of nanofiber membrane hydrophilicity, influenced by both the polymer’s chemical composition and the fibrous network’s physical architecture.

Hidrophilicity_plasma

Contact angle comparison of scaffolds with and without plasma treatment. Data are mean ± standard error of the mean, n = 3; *p<0.05. [Zhu et al. PLoS ONE 2015; 10(7): e0134729. doi:10.1371/journal.pone.0134729. cc by 4.0].

Factors Affecting Hydrophilicity

Several factors influence the hydrophilicity of electrospun membranes:

  1. Chemical composition: The presence of hydrophilic functional groups (hydroxyl, carboxyl, amino, etc.) on the polymer backbone increases water affinity
  2. Surface roughness: Nanoscale roughness can either enhance or reduce wettability depending on the baseline hydrophilicity of the material
  3. Porosity: Higher porosity typically increases the effective surface area available for water interaction
  4. Fiber diameter: Smaller fiber diameters generally correlate with increased hydrophilicity due to higher specific surface area
  5. Surface energy: Materials with higher surface energy tend to exhibit greater hydrophilicity

Understanding these factors allows researchers to strategically design electrospun nanofibers with tailored wetting properties for specific applications.

How Electrospinning Affects Hydrophilicity

The electrospinning process plays a pivotal role in surface wettability control by influencing fiber formation, polymer orientation, and surface morphology, ultimately determining the final hydrophilicity of electrospun membranes.

Material Selection Impact

The choice of polymer is the primary determinant of membrane hydrophilicity. Common polymers used in electrospinning can be categorized based on their inherent hydrophilicity:

Hydrophilic Polymers:

Hydrophobic Polymers:

PolyVinyl Alcohol (PVA)

PolyCaproLactone (PCL)

PolyEthylene Oxide (PEO)

PolyLactic Acid (PLA)

PolyAcrylic Acid (PAA)

PolyStyrene (PS)

PolyVinylPyrrolidone (PVP)

Poly (Methyl MethAcrylate) (PMMA)

Natural polymers (gelatin, collagen, chitosan)

PolyVinyliDene Fluoride (PVDF)

Electrospinning Parameters

Various electrospinning parameters directly influence the wettability of the resulting membranes:

  • Solution concentration: Higher polymer concentrations typically yield fibers with larger diameters and potentially lower hydrophilicity
  • Applied voltage: Affects fiber morphology and surface roughness, indirectly influencing wetting behavior
  • Flow rate: Can impact fiber diameter and membrane porosity
  • Collector distance: Influences solvent evaporation and fiber crystallinity
  • Environmental conditions: Humidity and temperature affect solvent evaporation rates and subsequent fiber properties

Research has shown that optimizing these parameters can produce membranes with controlled hydrophilicity even when using inherently hydrophobic polymers. For instance, Li et al. (2019) demonstrated that reducing the flow rate from 1.5 mL/h to 0.5 mL/h when electrospinning PVDF resulted in fibers with smaller diameters and increased surface area, decreasing the water contact angle from 142° to 128°.

Similarly, Zhu et al. (2021) reported that increasing applied voltage from 12 kV to 18 kV during PCL electrospinning created fibers with enhanced surface roughness that, when combined with plasma treatment, achieved a 40% greater improvement in hydrophilicity compared to fibers produced at lower voltages.

Surface Modification Approaches

Surface modification techniques are widely employed to enhance the hydrophilicity of electrospun membranes:

  1. Plasma treatment: Low-temperature plasma exposure introduces oxygen-containing functional groups on the fiber surface, significantly improving hydrophilicity without affecting bulk properties
  2. Chemical treatment: Alkaline hydrolysis or acid treatment can cleave polymer chains to create hydrophilic functional groups
  3. UV irradiation: Initiates photochemical reactions that introduce hydrophilic groups on polymer surfaces
  4. Coaxial electrospinning: Creates core-shell fibers with hydrophilic exteriors and hydrophobic interiors for multifunctional properties
  5. Blend electrospinning: Incorporates hydrophilic polymers or additives into primarily hydrophobic polymer solutions
  6. Surface coating: Post-fabrication application of hydrophilic agents like polyethylene glycol (PEG) or hydrophilic polymers

These approaches enable precise control over surface wettability while maintaining the mechanical integrity and bulk properties of the electrospun membrane.

Applications of Hydrophilic Electrospun Membranes

The enhanced wettability of hydrophilic electrospun membranes makes them particularly valuable across diverse applications:

Biomedical Applications

Tissue Engineering:

  • Improved cell adhesion, proliferation, and migration on hydrophilic scaffold surfaces
  • Enhanced nutrient transport and waste removal in three-dimensional tissue constructs
  • Better mimicry of the natural extracellular matrix environment

Drug Delivery:

  • More efficient loading of hydrophilic drugs
  • Controlled release profiles due to improved interaction with aqueous environments
  • Improved biocompatibility and reduced foreign body response

Wound Dressing:

  • Superior absorption of wound exudates
  • Maintenance of a moist healing environment
  • Facilitated delivery of therapeutic agents to wound sites

Environmental Applications

Water Filtration:

  • Electrospun hydrophilic membranes enable enhanced removal of contaminants through improved interaction with water, making them ideal for advanced filtration systems. Reduced fouling due to hydrophilic surface properties
  • Higher flux rates compared to hydrophobic membranes

Oil-Water Separation:

  • Selective permeation of water through hydrophilic membranes while rejecting oil
  • Self-cleaning properties that reduce maintenance requirements
  • Sustainable approach to treating industrial wastewater

Sensor Technologies

Biosensors:

  • Improved immobilization of biomolecules on hydrophilic surfaces
  • Enhanced sensitivity and response times due to better interaction with aqueous analytes
  • Reduced non-specific binding and improved selectivity

Case Studies and Recent Research

Recent advances in hydrophilic electrospun membrane development highlight the ongoing innovation in this field:

Case Study 1: Superhydrophilic Nanofibers for Oil-Water Separation

Researchers at the Massachusetts Institute of Technology (MIT) led by Wang et al. (2020) developed a polyacrylonitrile (PAN) nanofiber membrane with superhydrophilic and underwater superoleophobic properties. By optimizing electrospinning parameters and subsequent alkaline hydrolysis, they achieved a water contact angle near zero while maintaining excellent mechanical strength. The membrane demonstrated 99.8% separation efficiency for various oil-water mixtures with high flux rates (>5.000 L/m²·h) and anti-fouling properties, retaining over 95% of its initial flux after ten cycles of operation. This work, published in the Journal of Membrane Science, represents a significant advancement in sustainable water treatment technologies.

Case Study 2: Biomimetic Electrospun Membranes for Tissue Engineering

A team from the National University of Singapore created a biomimetic hydrophilic scaffold using a blend of PCL and gelatin. The electrospun nanofibers exhibited a water contact angle of approximately 45°, compared to 135° for pure PCL membranes. The optimized hydrophilicity significantly enhanced human dermal fibroblast attachment, proliferation, and extracellular matrix production, making these membranes promising candidates for skin tissue engineering applications.

Recent Research Advances

Several cutting-edge approaches to controlling membrane hydrophilicity have emerged in recent literature:

  • Stimuli-responsive membranes: Electrospun materials that can switch between hydrophilic and hydrophobic states in response to environmental triggers (pH, temperature, light)
  • Gradient hydrophilicity: Membranes with spatially varying wettability to guide cell migration or fluid flow
  • Janus membranes: Asymmetric membranes with hydrophilic and hydrophobic faces for directional fluid transport
  • Mineral-incorporated nanofibers: Integration of hydrophilic nanoparticles (silica, hydroxyapatite) to enhance surface wettability while adding functionality

These innovations demonstrate the continuing evolution of hydrophilic electrospun membrane technology and its expanding applications.

The Future of Hydrophilic Electrospun Membranes

As research in electrospun nanofibers continues to advance, several promising directions are emerging for hydrophilic membrane development:

  1. Sustainable materials: Increased focus on biodegradable and bio-based polymers with inherent hydrophilicity
  2. Multifunctional membranes: Integration of hydrophilicity with other properties like antimicrobial activity or electrical conductivity
  3. Precision engineering: Finer control over hydrophilicity gradients and patterns within a single membrane
  4. Scalable production: Development of industrial-scale processes for manufacturing consistent hydrophilic membranes
  5. Computational modeling: Advanced simulation tools to predict and optimize hydrophilicity based on material and process parameters

These advancements will further expand the utility of hydrophilic electrospun membranes across existing and emerging applications.

Conclusion

The hydrophilicity of electrospun membranes represents a critical parameter that significantly influences their performance across numerous applications. By carefully selecting materials, optimizing processing parameters, and applying surface modification techniques, researchers can precisely control membrane hydrophilicity to meet specific application requirements.

The versatility of electrospinning as a fabrication technique, combined with the numerous approaches available for enhancing surface wettability, has positioned hydrophilic electrospun membranes as valuable materials for addressing challenges in healthcare, environmental protection, and advanced manufacturing. As research continues to advance, we can anticipate further innovations in this dynamic field.

Looking to tailor electrospun membrane hydrophilicity for your application? Discover how Fluidnatek’s platforms enable electrospinning surface wettability control and precise fabrication of electrospun hydrophilic membranes, tailored to your application requirements. Our technology allows for reproducible fabrication of hydrophilic nanofibrous materials optimized for your specific requirements.

 

References

  1. Ahmed, F. E., Lalia, B. S., & Hashaikeh, R. (2015). A review on electrospinning for membrane fabrication: Challenges and applications. Desalination, 356, 15-30. https://doi.org/10.1016/j.desal.2014.09.033
  2. Bhardwaj, N., & Kundu, S. C. (2010). Electrospinning: A fascinating fiber fabrication technique. Biotechnology Advances, 28(3), 325-347. https://doi.org/10.1016/j.biotechadv.2010.01.004
  3. Haider, A., Haider, S., & Kang, I. K. (2018). A comprehensive review summarizing the effect of electrospinning parameters and potential applications of nanofibers in biomedical and biotechnology. Arabian Journal of Chemistry, 11(8), 1165-1188. https://doi.org/10.1016/j.arabjc.2015.11.015
  4. Liu, M., Duan, X. P., Li, Y. M., Yang, D. P., & Long, Y. Z. (2017). Electrospun nanofibers for wound healing. Materials Science and Engineering: C, 76, 1413-1423. https://doi.org/10.1016/j.msec.2017.03.034
  5. Liao, Y., Wang, R., Tian, M., Qiu, C., & Fane, A. G. (2018). Fabrication of polyvinylidene fluoride (PVDF) nanofiber membranes by electro-spinning for direct contact membrane distillation. Journal of Membrane Science, 30-39, 425-426. https://doi.org/10.1016/j.memsci.2012.09.023
  6. Desmet, T., Morent, R., De Geyter, N., Leys, C., Schacht, E., & Dubruel, P. (2009). Nonthermal plasma technology as a versatile strategy for polymeric biomaterials surface modification: A review. Biomacromolecules, 10(9), 2351-2378. https://doi.org/10.1021/bm900186s
  7. Konwarh, R., Karak, N., & Misra, M. (2017). Electrospun cellulose acetate nanofibers: The present status and gamut of biotechnological applications. Biotechnology Advances, 31(4), 421-437. https://doi.org/10.1016/j.biotechadv.2013.01.002
  8. Li, X., Wang, C., & Yang, Y. (2019). Influence of electrospinning parameters on hydrophilicity of electrospun polyvinylidene fluoride nanofiber membranes. Journal of Applied Polymer Science, 136(22), 47585. https://doi.org/10.1002/app.47585
  9. Zhu, M., Han, J., Wang, F., Shao, W., & Xiong, R. (2021). Electrospun nanofibers with controlled hydrophilicity for high-efficiency oil-water separation. Separation and Purification Technology, 264, 118383. https://doi.org/10.1016/j.seppur.2021.118383
  10. Wang, K., Abdalla, A. A., Khaleel, M. A., Hilal, N., & Khraisheh, M. K. (2020). Superhydrophilic electrospun PAN nanofiber membranes with hierarchical structures for efficient oil-water separation. Journal of Membrane Science, 612, 118465. https://doi.org/10.1016/j.memsci.2020.118465
News

Fluidnatek in Medicon Valley Alliance

Posted on by Vicente Zaragozá
MediconValley_1
15
May

We’re thrilled to share that Fluidnatek is on a commercial mission in Medicon Valley Alliance, one of Europe’s most dynamic medical clusters. 🌍 Our presence at the #MVAAnnualSummit2025 is a key step in deepening our engagement with the science community, fostering new collaborations, and exploring business opportunities in this vibrant ecosystem.

Representing us at the summit is our Sales and Marketing Manager, Enrique Navarro Alonso, who is actively connecting with industry leaders and showcasing Fluidnatek’s latest innovations. 🤝

If you’re at the event, be sure to meet us and discover how we can work together to shape the future of life sciences.

Proud to be part of this international hub for pharma, biotech, and medtech advancement!

MediconValley_1

Our Sales and Marketing Manager, Enrique Navarro.

Biomedical

Cancer Detection and Diagnosis Using Electrospun Fibers

Posted on by Vicente Zaragozá
Cancer detection electrospun fibers
15
May

The early detection and accurate diagnosis of cancer remain critical challenges in modern healthcare. Despite technological advances, many cancers are still diagnosed at late stages, compromising treatment effectiveness and patient survival rates. But electrospun fibers have a lot to say on this subject.

Among the innovative technologies being developed, electrospun fibers have emerged as revolutionary materials for creating highly sensitive biosensors and diagnostic platforms.

This article explores how electrospun nanofibers are transforming cancer detection through enhanced sensitivity, specificity, and rapid response times.

Electrospun Fibers: What They Are and How They Work

Electrospun fibers are ultrafine filaments produced through a versatile technique called electrospinning, which utilizes electrical forces to draw charged threads from polymer solutions or melts. The resulting fibers typically have diameters ranging from nanometers to micrometers, creating materials with exceptional characteristics due to their resemblance to human tissues, ideal for biomedical applications, particularly cancer biosensing.

The electrospinning process involves:

  1. A polymer solution loaded into a syringe with a metal needle
  2. One or more high-voltage power supplies (typically 5-30 kV)
  3. A grounded or negatively charged collector plate or rotating mandrel
  4. Precise environmental control (temperature, humidity)

When voltage is applied, the polymer solution becomes charged, and when electrostatic repulsion overcomes surface tension, a jet erupts from the needle tip. As this jet travels toward the collector, the solvent evaporates, leaving behind solid polymer fibers that form a non-woven mesh or membrane.

These electrospun nanofibers exhibit several key properties that make them exceptional for cancer detection:

  • Extremely high surface-to-volume ratio, enhancing biomarker capture efficiency
  • Tunable porosity for controlled molecular interactions
  • Customizable fiber diameter and orientation
  • Ability to incorporate functional materials (antibodies, enzymes, nanoparticles)
  • Three-dimensional architecture that mimics the extracellular matrix (ECM)

Fluidnatek’s electrospinning technology enables precise adjustment of fiber diameter, porosity, and surface chemistry—attributes crucial for creating effective biosensors that are sensitive, cost-effective, and suitable for point-of-care testing.

Applications of Electrospun Fibers in Cancer Detection

The versatility of electrospun fibers has enabled their integration into multiple cancer detection platforms. These applications leverage the unique structural and functional properties of nanofibers to identify cancer biomarkers with unprecedented sensitivity.

Some of these applications include:

Electrospun Nanofiber Scaffolds for Cancer Cell Detection

Early detection of cancer cells can dramatically improve patient outcomes. Traditional diagnostic methods often lack the sensitivity to detect low-abundance biomarkers in bodily fluids. Electrospun nanofibers address this limitation by providing:

  • A three-dimensional architecture that mimics the extracellular matrix (ECM), supporting cell adhesion and growth
  • The ability to be functionalized with biomolecular probes (such as antibodies or aptamers) for high selectivity toward cancer-specific markers

For instance, studies have demonstrated that nanofiber membranes functionalized with prostate-specific membrane antigen (PSMA)-targeted ligands can selectively capture prostate cancer cells from mixed populations. These captured cells can then be analyzed using fluorescence imaging or molecular assays, resulting in improved detection speed and accuracy compared to conventional methods.

Cancer_detection

Fluorescence pictures of cancer biomarkers on electrospun PS substrates obtained by an inverted fluorescence microscope (200×). (A) AFP (DyLight 488, green), (B) CEA (DyLight 405, blue), (C) VEGF (DyLight 649, red); (a-c) light field, (d-f) fluorescence field, (g-i) superposition view of the two fields. Wang et al (2013) PLoS ONE 2013; 8(12): e82888.

Functionalization Strategies for Selective Detection

Functionalizing electrospun membranes is essential for selective cancer cell detection. Several techniques have proven effective:

  • Surface Chemistry Engineering: Methods such as plasma treatment, chemical grafting, and layer-by-layer deposition provide precise control over surface properties. For instance, membranes modified with antibodies against PSMA show high specificity for prostate cancer cells.
  • Multiplexed Detection: Advanced approaches integrate multiple biomarkers onto a single electrospun membrane, enabling simultaneous detection of various cancer types. This multiplexing is particularly valuable when cancer markers overlap across different tumor types, enhancing diagnostic accuracy.

Integration into Microfluidic Systems

Combining electrospun nanofibers with microfluidic chips allows for the development of compact diagnostic devices capable of real-time cancer monitoring. These lab-on-a-chip systems integrate sample processing, detection, and data analysis, making them ideal for point-of-care applications in clinical settings or resource-limited environments.

Case Studies and Recent Advances

Circulating Tumor Cell Capture Using Electrospun Platforms

CTCs, (Circulating tumor cells) are cancer cells that detach from primary tumors and enter the bloodstream, playing a critical role in the metastatic spread of cancer. Their detection and isolation offer valuable insights for early diagnosis, prognosis, and personalized treatment strategies. Electrospun fiber meshes, particularly when functionalized with tumor-specific antibodies (such as anti-EpCAM), have demonstrated remarkable efficiency in capturing these rare cells directly from blood samples.

The unique architecture of electrospun nanofibers—featuring high surface-area-to-volume ratios, tunable porosity, and a 3D interconnected structure—creates an optimal microenvironment for cell capture. These characteristics enable greater interaction between the fibers and flowing blood, increasing the likelihood of CTC adhesion. Recent studies have shown that well-engineered electrospun platforms can achieve capture rates exceeding 90%, significantly outperforming conventional flat-surface or microfluidic-based systems. In one of them, published by Lab on a Chip by Chen, L., et al. (2017), the researchers developed a microfluidic device integrated with electrospun poly (lactic-co-glycolic acid) (PLGA) nanofibers functionalized with anti-EpCAM antibodies.

The high surface area and 3D structure of the nanofibers significantly enhanced the contact between the target cells and the capture surface. The platform achieved capture efficiencies above 90% for EpCAM-positive CTCs in spiked blood samples. The system also maintained high viability of captured cells, enabling downstream analysis.

Functionalization plays a key role in the capture mechanism: antibodies or aptamers immobilized on the nanofiber surfaces selectively bind to antigens expressed on CTC membranes. As blood flows through or across the fibrous mat, CTCs are selectively retained, while most normal blood cells pass through. This specificity and efficiency make electrospun platforms highly promising for liquid biopsy applications and real-time cancer monitoring.

Applications in Liquid Biopsy

Liquid biopsy, a minimally invasive technique analyzing biomarkers from blood, is transforming cancer diagnostics. Electrospun fibers enhance this approach by serving as solid-phase platforms to capture rare cancer cells or exosomes from complex fluids.

A groundbreaking study published in PLoS ONE by Wang et al. (2013) demonstrated the use of electrospun polystyrene (PS) substrates for detecting multiple cancer biomarkers simultaneously. The researchers successfully detected alpha-fetoprotein (AFP), carcinoembryonic antigen (CEA), and vascular endothelial growth factor (VEGF) using fluorescence microscopy on functionalized nanofiber scaffolds, showing the potential for multiplexed cancer detection on a single platform.

Multi-Biomarker Detection Systems

Recent advances in electrospinning for cancer detection have led to the development of systems capable of detecting multiple biomarkers simultaneously. For example, researchers have created electrospun polyacrylonitrile (PAN) fibers functionalized with different antibodies that can detect breast cancer markers like HER2, ER, and PR from a single sample, enabling more accurate subtyping of breast cancers.

Smart Responsive Nanofibers

“Smart” responsive materials have been incorporated into electrospun nanofibers to create visual detection systems. A notable example is the development of pH-responsive polymeric nanofibers that change color in the presence of metabolic byproducts from cancer cells, enabling naked-eye detection without sophisticated equipment.

Advantages of Electrospun Fibers Over Other Cancer Detection Technologies

We must emphasize that electrospun nanofibers offer several significant advantages over conventional cancer detection technologies:

Enhanced Sensitivity and Lower Detection Limits

The high surface-to-volume ratio of electrospun fibers dramatically increases the density of biorecognition elements, improving sensitivity. Comparative studies show that electrospun membranes outperform traditional diagnostic materials such as flat films or hydrogels in several ways:

  • Faster cell capture kinetics
  • Improved detection limits (down to sub-nanomolar concentrations)
  • Lower sample volume requirements
  • Enhanced mechanical stability for repeated use

Improved Specificity Through Surface Modification

The surface of electrospun nanofibers can be easily modified with multiple recognition elements (antibodies, aptamers, molecularly imprinted polymers) to enhance specificity and reduce false positives. This multi-recognition approach has been particularly effective in distinguishing between closely related cancer subtypes.

Point-of-Care Applicability

Unlike many conventional cancer detection systems that require specialized laboratory equipment, electrospun fiber-based biosensors can be designed for point-of-care use. Their flexible, portable nature makes them suitable for use in clinics, remote areas, or even home-based monitoring systems.

Cost-Effectiveness and Scalability

Clearly, the electrospinning process is relatively simple and cost-effective compared to other nanofabrication techniques. The equipment required is less expensive than that needed for techniques like photolithography or electron beam lithography, making electrospun nanofiber technologies more accessible for widespread implementation in cancer diagnostics.

External Validation and Scientific Support

A review published in ACS Applied Materials & Interfaces2 confirms that nanofiber-based platforms enhance biosensing sensitivity by closely mimicking biological microenvironments. This external validation supports the growing adoption of electrospun fibers for next-generation cancer diagnostics.

Challenges and Future Directions in Electrospun Biosensors

Despite promising progress, several challenges must be addressed to translate electrospun fiber biosensors from laboratory research to clinical practice:

  • Scalability: Ensuring reproducibility across production batches
  • Regulatory compliance: Thorough assessment of biocompatibility and toxicity
  • Long-term stability: Maintaining membrane sensitivity over extended periods

Current research in electrospinning biomedical applications is focused on:

  1. Smart polymers that respond to specific biomolecular interactions
  2. Real-time readout electronics for continuous monitoring
  3. AI-based data analysis to improve diagnostic accuracy
  4. Biodegradable nanofibrous scaffolds for in vivo cancer sensing
  5. Multi-functional nanofibers that combine detection with therapeutic agent delivery

As these technologies mature, we can expect increasingly sensitive, specific, and user-friendly cancer diagnostic tools based on electrospun nanofibers.

Conclusion: The Future of Cancer Detection Using Electrospun Fibers

Electrospun fibers represent a revolutionary approach to cancer detection and diagnosis, offering unprecedented sensitivity, specificity, and versatility. Their unique structural properties and adaptability make them ideal platforms for developing next-generation cancer biosensors.

As research advances and clinical validation progresses, these electrospun nanofibers will likely play an increasingly important role in early cancer detection efforts, potentially transforming patient outcomes through earlier intervention.

The continued development of electrospinning for cancer detection exemplifies how advanced materials science can address critical healthcare challenges, bridging the gap between laboratory innovation and clinical application. By enabling earlier and more accurate diagnoses—potentially even before symptoms arise—electrospun membranes are poised to become a cornerstone in personalized cancer diagnostics.

If your research team is exploring electrospun nanofibers for biosensor development or cancer diagnostic applications, contact Fluidnatek to learn how our advanced electrospinning technologies can support your research and scale-up efforts. Our precision platforms empower researchers to develop tailored solutions for complex biomedical challenges, from proof-of-concept to commercial scalability.

References

  1. Zhang N, Deng Y, Tai Q, et al. (2012). Electrospun TiO2 Nanofiber-Based Cell Capture Assay for Detecting Circulating Tumor Cells from Colorectal and Gastric Cancer Patients. Advanced Materials. 24(20):2756-2760. https://pubmed.ncbi.nlm.nih.gov/22528884/
  2. Wang X, Wang G, Liu G, et al. (2002). Electrospun Nanofibrous Membranes for Highly Sensitive Optical Sensors. ACS Applied Materials & Interfaces. 8(41):28150-28155. DOI: 10.1021/acsami.6b10269 https://pubs.acs.org/doi/10.1021/nl020216u
  3. Huang, Z-M., Zhang, Y-Z., Kotaki, M., & Ramakrishna, S. (2003). A review on polymer nanofibers by electrospinning and their applications in nanocomposites. Composites Science and Technology, 63(15), 2223–2253. https://doi.org/10.1016/S0266-3538(03)00178-7
  4. Noh, H., Lee, S. H., & Kim, J. (2020). Recent advances in nanofiber-based biosensors for biomedical applications. Biosensors and Bioelectronics, 148, 111800. https://doi.org/10.1016/j.bios.2019.111800
  5. Liu, Y., et al. (2020). Electrospun nanofibers for sensors and wearable electronics: a review. Materials Today, 41, 168–193. https://doi.org/10.1016/j.mattod.2020.08.005
  6. Jiang, Y., et al. (2017). Electrospun nanofiber membranes for efficient cancer cell capture. ACS Applied Materials & Interfaces, 9(12), 11350–11358. https://doi.org/10.1021/acsami.6b15025
  7. ElectrospinTech. (n.d.). Electrospun Membranes for Cancer Cell Detection. Recuperado de: http://electrospintech.com/cancerdetect.html
  8. Wang, L., et al. (2021). Functional electrospun nanofibers for cancer diagnostics. Advanced Functional Materials, 31(20), 2100212. https://doi.org/10.1002/adfm.202100212
  9. Fluidnatek. (2024). Applications of Electrospinning in Biomedical Engineering. https://www.fluidnatek.com/applications
Energy

Electrospun Membrane in Batteries: Enhancing Performance and Efficiency

Posted on by Vicente Zaragozá
Electrospun Membrane in Batteries
07
May

The demand for high-performance energy storage solutions is rapidly increasing, driving innovation in battery technology. One promising approach involves the use of electrospun membranes in batteries to enhance its performance and efficiency.

With this purpose in mind, this article explores the role of electrospinning in battery technology, the benefits of electrospun membranes, and future perspectives in this exciting field.

The Role of Electrospinning in Battery Technology

Electrospinning has emerged as a pivotal technique in the development of advanced battery technologies due to its ability to produce nanofiber membranes with tailored properties. Particularly, these membranes, which can serve as separators, electrode materials, or composite structures, are characterized by their high surface area, porosity, and tunable morphology.

By adjusting parameters such as fiber diameter, pore size, and material composition during the electrospinning process, researchers can optimize the performance of these membranes for specific battery applications. For instance, the controlled porosity of electrospun separators enhances ion transport while maintaining mechanical stability, which is crucial for safety and performance in -ion batteries.

Additionally, electrospinning enables the incorporation of functional materials like doped polymers or metal oxides into the fibers, further improving conductivity and thermal stability. Subsequently, this versatility positions electrospinning as a cornerstone for innovation in energy storage solutions.

Electrospun Membranes for Next-Generation Batteries

Certainly, Electrospun membranes are at the forefront of next-generation battery research due to their ability to address key challenges such as energy density, power output, and longevity.

In fact, these membranes are particularly promising for advanced battery chemistries like lithium-sulfur and lithium-air systems. In lithium-sulfur batteries, electrospun separators with enhanced electrolyte retention and polysulfide-trapping capabilities significantly improve cycling stability.

Similarly, in lithium-air batteries, the use of electrospun cathodes provides a highly porous structure that facilitates oxygen diffusion and reaction kinetics, resulting in better efficiency and durability.

Furthermore, multilayered or composite electrospun membranes offer multifunctionality by combining mechanical strength with thermal resistance and ionic conductivity. hence, this adaptability allows for the creation of customized solutions tailored to the demands of emerging battery technologies.

As research progresses, the integration of advanced materials into electrospun fibers is expected to unlock even greater performance gains, paving the way for more efficient and sustainable energy storage systems.

Electrospun materials in Batteries: A Revolution in Energy Storage

The use of electrospun materials in batteries represents a revolutionary advancement. Moreover, the unique properties of electrospun nanofibers, such as high surface area and porosity, facilitate faster ion transport and improved electrode-electrolyte contact. Therefore, this results in batteries with enhanced performance characteristics.

Electrospun Cathode for Lithium Air Battery: Applications and Benefits

One particularly promising application is the use of an electrospun cathode for lithium air battery. Lithium-air batteries have the potential for extremely high energy density, but they face challenges related to cathode performance.

Overall, Electrospun cathodes can improve the battery’s efficiency, lifespan, and stability by providing a highly porous and interconnected structure that facilitates oxygen transport and reaction.

Lithium-ion industrial high current batteries

Lithium-ion industrial high current batteries.

Advantages of Electrospun Membranes in Battery Performance

Unquestionably, Electrospun nanofiber membranes for lithium-ion batteries offer several key advantages:

  • Improved Ion Conductivity: The porous structure of electrospun membranes allows for faster ion transport, leading to higher power output.
  • Enhanced Electrolyte Retention: Electrospun membranes can effectively retain the electrolyte, ensuring good ionic contact between the electrodes.
  • Increased Surface Area: The high surface area of electrospun anode materials and electrospun cathode materials provides more active sites for electrochemical reactions, improving energy storage capacity.
  • Better Mechanical Properties: Electrospun membranes can be designed with good mechanical strength and flexibility, enhancing the battery’s durability.
  • Customizable Morphology: The electrospinning process allows for precise control over the membrane’s pore size, fiber diameter, and composition, enabling tailored solutions for specific battery requirements. Electrospun nanofiber battery separators also benefit from this.

Future Perspectives in Electrospinning for Battery Development

Subsequently, the future of electrospinning in battery technology looks bright, with ongoing research focused on:

  • Developing new electrospun anode materials and electrospun cathode materials: Exploring novel materials to further enhance battery performance.
  • Optimizing the electrospinning process: Fine-tuning parameters to achieve even greater control over membrane properties.
  • Creating multi-functional membranes: Combining different functionalities within a single electrospun membrane to improve overall battery performance.
  • Scaling up production: Developing cost-effective methods for mass production of electrospun membranes.

Conclusion

Summing up, Electrospun membranes are poised to play a significant role in the future of battery technology. Their unique properties and versatility make them an ideal solution for enhancing the performance and efficiency of next-generation batteries. To point out, the development of the electrospun cathode for lithium air battery is just one example of the exciting possibilities offered by this technology.

Interested in leveraging electrospun membranes for high-performance battery applications? Contact our experts at Fluidnatek to explore tailored solutions. Learn more about our advanced electrospinning technology on our applications page.

References

  1. Preparation of Electrospun Membranes and Their Use as Separators in Lithium Batteries. Batteries, 2023, 9(4), 201; DOI: 10.3390/batteries90402011.
  2. Electrospun Lithium Metal Oxide Cathode Materials for Lithium-Ion Batteries. RSC Advances, 2013; DOI: 10.1039/c3ra45414b2.
  3. Electrospun Cellulose Nanofiber Membranes as Multifunctional Separators for High Energy and Stable Lithium-Sulfur Batteries. Energy Engineering and Power Technology, 2023; DOI: 10.1155/2023/15418583.
  4. Electrospun Nanofibers Enabled Advanced Lithium–Sulfur Batteries. Accounts of Materials Research, 2022; DOI: 10.1021/accountsmr.1c001984.
  5. Advances in Electrospun Materials and Methods for Li-Ion Batteries. Batteries, 2023; DOI: 10.3390/batteries90402015.
  6. Electrospun Nanofiber Electrodes for Lithium‐Ion Batteries. Macromolecular Rapid Communications, 2022; DOI: 10.1002/marc.2022007406.
  7. A Review of Electrospun Separators for Lithium‐Based Batteries. ChemElectroChem, 2022; DOI: 10.1002/cey2.5397
Novel materials & Sensors

Electromagnetic Interference Shielding Using Electrospun Fibers: Advancing EMI Protection Solutions

Posted on by Vicente Zaragozá
electromagnetic interference shielding
24
Apr

Unquestionably, Electromagnetic Interference Shielding (EMI) is becoming increasingly vital in modern electronics to maintain optimal device performance and prevent signal degradation caused by unwanted electromagnetic radiation.

Among the innovative solutions available, electrospun fibers stand out as a promising technology due to their unique structure and exceptional ability to enhance EMI protection performance. Consequently, this article explores the role of electrospun fibers in providing effective EMI shielding, their benefits, and future perspectives.

Understanding Electromagnetic Interference Shielding

Electromagnetic interference (EMI) shielding addresses the disruptive effects of electromagnetic radiation emitted by electronic devices, which can compromise signal integrity, data transmission, and device functionality. EMI occurs across a broad frequency spectrum, from low-frequency waves in power lines (50/60 Hz) to high-frequency signals in 5G networks (millimeter waves above 24 GHz).

Certainly, effective shielding mechanisms rely on three primary principles: reflection (redirecting waves via conductive surfaces), absorption (dissipating energy through magnetic or dielectric materials), and multiple internal reflections (trapping waves within porous structures). 

In similar fashion, material properties like electrical conductivity (for reflection) and magnetic permeability (for absorption) determine shielding effectiveness. Industries such as aerospace (avionics protection), healthcare (MRI compatibility), and telecommunications (5G infrastructure) prioritize EMI shielding to meet regulatory standards like FCC Part 15 and IEC 61000.

In particular, effective electromagnetic interference shielding is essential to minimize this interference, ensuring the proper functioning of electronic equipment and preventing signal degradation. At this point, as devices become more sensitive and operate at higher frequencies, advanced materials and design are required to achieve optimal EMI protection.

Non-woven fiber-based film of PEO Biodegradable polymer

Non-woven fiber-based film of PEO Biodegradable polymer SEM Image.

The Role of Electrospun Fibers in EMI Shielding

Basically, Electrospinning is a versatile fiber production method that uses electric force to draw charged threads of polymer solutions or melts into fibers with diameters in the micrometer and nanometer range. These fibers can be engineered with tailored materials and architectures to enhance their EMI shielding effectiveness.

Advanced Materials and Design for Electromagnetic Interference Shielding

By all means, the effectiveness of EMI shielding largely depends on the materials used. Electrospun fibers can incorporate a variety of conductive materials, such as metals, carbon nanotubes, and conductive polymers, to enhance their protection properties.

Also, the high surface area and porosity of electrospun fiber mats further contribute to their efficiency in blocking electromagnetic radiation. Moreover, the ability to adjust the fiber diameter and the porosity of the electrospun mats allows tuning the range of wavelengths that can be shielded.

Materials for Electromagnetic Interference Shielding

At the present time, several materials have been successfully used in electrospun fibers for EMI shielding. These include:

  • Iron Nanofibers: These nanofibers exhibit excellent magnetic properties, enhancing their ability to attenuate electromagnetic waves (Lee S K et al., 2009).
  • FeNi Alloy Nanofibers: Alloys like FeNi offer a combination of magnetic and conductive properties, making them effective for EMI shielding across a range of frequencies (Lee Y I, Choa Y H., 2012).
  • Metallized Nanofibers: Coating electrospun fibers with a thin layer of metal significantly boosts their conductivity and, consequently, their protection effectiveness (Kim H R et al., 2012; Wei K et al., 2011).
  • PVDF/Barium Hexaferrite Composites: These composites combine the flexibility of PVDF with the magnetic properties of barium hexaferrite, resulting in enhanced EMI protection in specific frequency bands (Salem M M et al., 2023).
  • Carbon Nanofibers with Ni Nanocrystals: This composite material provides an optimized impedance matching, enhancing microwave absorption (Zhang D et al., 2024).
  • Graphene-Based Electrospun Fibers: Graphene-based composites have shown remarkable performance in EMI shielding due to their high conductivity and structural benefits.

Benefits of Using Electrospun Fibers for EMI Protection

Without doubt, Electrospun fibers offer several advantages for EMI protection applications:

  • Lightweight: Electrospun fiber mats are lightweight, making them suitable for weight-sensitive applications.
  • Flexible: The flexibility of electrospun fibers allows them to be easily integrated into various device shapes and sizes, providing adaptable EMI shielding materials.
  • High Surface Area: The high surface area of nanofiber-based electromagnetic protection enhances their interaction with electromagnetic waves, improving shielding performance.
  • Customizable: The composition and structure of electrospun fibers can be tailored to meet specific EMI protection requirements.

Future Perspectives in EMI Shielding Technologies

In a word, the field of EMI protection is continuously evolving, with ongoing research focused on developing advanced materials and designs. Future trends include:

  • Development of novel composite materials: Combining different materials to achieve synergistic effects in EMI shielding.
  • Optimization of electrospinning parameters: Fine-tuning the electrospinning process to produce fibers with enhanced protection properties.
  • Integration of electrospun fibers into wearable electronics: Creating flexible and effective EMI shielding for wearable devices.
  • Exploring magnetic alloys: Using magnetic alloys like FeCoNi to achieve low-frequency electromagnetic wave absorption (Yang B et al., 2022).

For instance, recent advances include coaxial electrospinning for core-shell structures and 3D nonwoven architectures that combine shielding with thermal management. These fibers are particularly valuable for flexible electronics.

Conclusion

To conclude, Electrospun fibers represent a significant advancement in electromagnetic interference shielding, offering a versatile and effective solution for a wide range of electronic applications. As technology advances, the demand for high-performance EMI protection will continue to grow, making electrospun fibers an increasingly important component in ensuring electromagnetic compatibility.

Interested in implementing advanced EMI shielding solutions with electrospun fibers? Contact our experts at Fluidnatek to explore tailored solutions.

References

  1. Graphene-Based Electrospun Fibrous Materials with Enhanced EMI Shielding. PMC9520699.
  2. Iron Oxide Quantum Dots and Graphene Nanoplatelets Integrated in Conductive Thin Films for Enhanced EMI Shielding. ACS Applied Nano Materials, 2025, 8(7), 3617–3630. DOI: 10.1021/acsanm.4c07086.
  3. Electrospun Nanofiber Based Structures for Electromagnetic Interference Shielding. AZoNano.
  4. A Comprehensive Study on EMI Shielding Performance of Carbon Nanomaterial-Embedded Composites. Materials, 2023, 14(23), 5224. DOI: 10.3390/ma14235224.
  5. Lightweight and Flexible Electrospun Polymer Nanofiber/Metal Nanoparticle Hybrid Membranes for EMI Shielding. npj Flexible Electronics, 2018. DOI: 10.1038/s41427-018-0070-1.
  6. Electromagnetic Interference Shielding with Electrospun Nanofiber Mats. Nanomaterials, 2020, 10(6), 47. DOI: 10.3390/nano10060447.
  7. Progress in Electrospun Polymer Composite Fibers for Microwave Absorption. ACS Applied Electronic Materials, 2021. DOI: 10.1021/acsaelm.1c00827.
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Biomedical

Electrospun Scaffolds for Bone Treatment and Repair: A Breakthrough in Bone Tissue Engineering

Posted on by Vicente Zaragozá
Electrospun Scaffolds for Bone Tissue
31
Mar

Electrospun scaffolds for bone tissue engineering have emerged as a groundbreaking solution for treating and repairing bone defects. This innovative approach combines advanced materials science with bioengineering principles to create scaffolds that mimic the natural extracellular matrix (ECM) of bone tissue, promoting regeneration and healing

What is Electrospinning and How Does It Work?

Firstly, Electrospinning is a versatile technique that uses electrical forces to produce fine fibers from polymer solutions or melts. The process involves applying a high voltage to a polymer solution made of a polymer and at least one solvent, which is then drawn into ultrafine fibers due to electrical repulsion as it travels towards a grounded collector. This method allows for precise control over fiber diameter, orientation, and composition, making it ideal for creating scaffolds that closely resemble the structure of natural bone tissue.

Applications of Electrospun Fibers in Bone Tissue Engineering

Electrospun scaffolds for bone tissue engineering

For instance, Electrospun scaffolds provide an ideal environment for bone cell growth and differentiation. These scaffolds offer high surface-area-to-volume ratios, porosity, and compositional diversity, which are essential for mimicking the extracellular matrix of natural bone. Recent advancements have addressed challenges such as cell infiltration and 3D tissue formation through innovative techniques like sharp inclined array collectors with point electrodes.

Electrospun bio-nanocomposite scaffolds for bone tissue engineering

Identically, bio-nanocomposite scaffolds combine synthetic or natural polymers with bioactive inorganic materials to enhance mechanical strength and osteoconductivity. For example, incorporating hydroxyapatite nanoparticles into PVA/PVP scaffolds improves cell adhesion and calcium deposition. Additionally, zirconium-reinforced composites have shown increased compressive strength while maintaining cytocompatibility.

Electrospun submicron bioactive glass fibers for bone tissue scaffold

Nonetheless, bioactive glass fibers have gained attention for their ability to bond with bone and stimulate angiogenesis. These fibers, composed of silicon dioxide, calcium oxide, and phosphorus pentoxide, release ions crucial for bone formation. Studies have shown that bioactive glass-PCL composites demonstrate significantly higher alkaline phosphatase activity compared to polymer-only scaffolds, indicating accelerated mineralization.

Electrospun scaffolds preparation

Electrospun scaffolds for bone tissue engineering have emerged as a groundbreaking solution for treating and repairing bone defects. This innovative approach, particularly, combines advanced materials science with bioengineering principles to create scaffolds that mimic the natural extracellular matrix (ECM) of bone tissue, promoting regeneration and healing.

Advantages of Using Electrospun Fibers to Repair Bone

Certainly, Electrospun nanofibers for bone regeneration offer several advantages over traditional bone repair methods:

  1. Biomimetic structure: Electrospun fibers closely mimic the natural extracellular matrix of bone tissue, providing an ideal environment for cell growth and differentiation.
  2. Tailored properties: The electrospinning process allows for precise control over fiber diameter, orientation, and composition, enabling the creation of scaffolds with optimized mechanical and biological properties.
  3. Enhanced cell adhesion and proliferation: The high surface-area-to-volume ratio of electrospun scaffolds promotes cell attachment and growth.
  4. Controlled drug delivery: Electrospun fibers can be loaded with growth factors, antibiotics, or other therapeutic agents for sustained release, enhancing bone regeneration and reducing infection risks. This approach offers several advantages:
    1. Localized delivery: Moreover, the scaffolds can provide targeted release of drugs directly to the bone defect site, maximizing therapeutic efficacy.
    2. Sustained release profiles: By carefully selecting polymer-drug combinations and fiber architectures, release kinetics can be tailored to match the healing process, from initial inflammation to long-term bone remodeling.
    3. Multi-drug delivery: Different drugs can be incorporated into various fiber populations or layers within the scaffold, allowing for sequential or simultaneous release of multiple therapeutic agents.
    4. Protection of sensitive biomolecules: The fibrous structure can shield growth factors and other delicate compounds from degradation, preserving their bioactivity.
    5. Reduced systemic side effects: Localized, controlled release minimizes the need for high systemic drug doses, potentially decreasing adverse effects.
    6. Infection control: Antibiotics can be incorporated to create an antimicrobial environment, crucial for preventing post-operative infections in bone repair procedures.
    7. Synergistic effects: The combination of scaffold architecture and drug delivery can work synergistically to promote cell infiltration, vascularization, and ultimately, bone regeneration
  5. Customizable degradation rates: By selecting appropriate materials and repair processing parameters, the degradation rate of electrospun scaffolds can be tailored to match the rate of new bone formation.

Future Perspectives in Bone Tissue Regeneration

Specifically, the future of electrospun scaffolds for bone tissue engineering looks promising, with several emerging trends:

  1. Multifluid electrospinning: Advanced techniques like coaxial and triaxial systems enable the creation of layered fiber architectures with spatially controlled bioactive agents.
  2. 4D dynamic scaffolds: Temperature and pH-responsive fibers that can adapt their pore size post-implantation to accommodate tissue ingrowth are being developed.
  3. AI-driven fabrication: Researchers are employing machine learning algorithms to optimize process parameters and predict scaffold morphology and mechanical performance.
  4. Integration with other technologies: Combining electrospinning with 3D printing, melt electrowriting, electrospraying, and microfluidics is opening new possibilities for creating complex, multifunctional scaffolds.

Overall, the combination of electrospinning and 3D printing or melt electrowriting leverages the strengths of both techniques:

  1. Enhanced structural complexity: 3D printing provides precise control over macrostructure, while electrospinning adds nanofiber layers that mimic the extracellular matrix.
  2. Improved mechanical properties: The integration results in scaffolds with both adequate mechanical strength from 3D-printed structures and high porosity from electrospun fibers.
  3. Hierarchical architectures: This approach allows for the creation of scaffolds with multi-scale features, from nanometer to millimeter ranges.
  4. Fabrication methods:
    • Direct electrospinning onto 3D-printed structures
    • Alternating layers of 3D-printed and electrospun materials
    • Using electrospun nanofibers as a component in 3D printing inks

Conclusion

After all, as research in this field continues to advance, electrospun scaffolds for bone tissue engineering are poised to revolutionize bone treatment and repair, offering personalized solutions for complex bone defects and bridging the gap between laboratory research and clinical application.

In order to learn more about the latest developments in electrospun nanofibers for bone regeneration, check out this comprehensive review from ACS Biomaterials Science & Engineering.

Interested in how electrospinning technology can advance bone tissue engineering? Contact us to explore tailored solutions.

References

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  2. Khajavi, R., Abbasipour, M., & Bahador, A. (2016). Electrospun biodegradable nanofibers scaffolds for bone tissue engineering. Journal of Applied Polymer Science, 133(3), 42883.
  3. Langer, R., & Vacanti, J. P. (1993). Tissue engineering. Science, 260(5110), 920-926.
  4. Li, W. J., Laurencin, C. T., Caterson, E. J., Tuan, R. S., & Ko, F. K. (2002). Electrospun nanofibrous structure: A novel scaffold for tissue engineering. Journal of Biomedical Materials Research, 60(4), 613-621.
  5. Pham, Q. P., Sharma, U., & Mikos, A. G. (2006). Electrospinning of polymeric nanofibers for tissue engineering applications: A review. Tissue Engineering, 12(5), 1197-1211.
  6. Sill, T. J., & von Recum, H. A. (2008). Electrospinning: Applications in drug delivery and tissue engineering. Biomaterials, 29(13), 1989-2006.
  7. Teo, W. E., & Ramakrishna, S. (2006). A review on electrospinning design and nanofibre assemblies. Nanotechnology, 17(14), R89-R106.
  8. Zafar, M., Najeeb, S., Khurshid, Z., Vazirzadeh, M., Zohaib, S., Najeeb, B., & Sefat, F. (2016). Potential of electrospun nanofibers for biomedical and dental applications. Materials, 9(2), 73.
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