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Stretchable Nanofiber-Based Felt as a String Electrode for Potential Use in Wearable Glucose Biosensors
Bianca Seufert1, Sylvia Thomas1, Arash Takshi1
1Department of Electrical Engineering, University of South Florida, 4202 E. Fowler Avenue, Tampa, FL 33620, USA.
Sensors (Basel, Switzerland)
|February 24, 2024
Summary
Researchers developed a flexible nanofiber mesh string electrode for wearable glucose sensing. This novel biosensor demonstrates high sensitivity and a low detection limit for glucose in sweat.
Area of Science:
- Materials Science
- Biotechnology
- Wearable Technology
Background:
- Nanofiber technology enables smart textiles through electrospinning.
- Conductive polymer-coated strings are crucial for smart textile applications.
- Electrochemical enzymatic glucose sensors are vital for health monitoring.
Purpose of the Study:
- To present an electrospun nanofiber mesh-based (NF-Felt) string electrode for electrochemical enzymatic glucose sensing.
- To evaluate the NF-Felt string electrode's performance compared to commercial alternatives.
- To assess the potential of NF-Felt strings for wearable biosensors.
Main Methods:
- Fabrication of NF-Felt string electrodes using electrospinning and conducting polymer coating.
- Morphological characterization using scanning electron microscopy (SEM).
- Mechanical testing (stress-strain) and electrochemical characterization for glucose detection.
Main Results:
- NF-Felt string electrodes exhibited high stretchability.
- Morphological analysis confirmed nanofiber matrix suitability for enzyme binding.
- The electrode detected glucose concentrations from 0.0 mM to 30.0 mM with a sensitivity of 37.4 μA/mM·g and a detection limit of 3.31 mM.
Conclusions:
- The NF-Felt string electrode offers superior electrochemical performance and flexibility.
- This technology is a promising candidate for developing wearable biosensors for glucose monitoring in sweat.
