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Wearable electronics for heating and sensing based on a multifunctional PET/silver nanowire/PDMS yarn
Zhonglin Yang1, Wenwen Wang1, Lili Bi1
1College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, China. panjun0123@zjut.edu.cn ye0702@zjut.edu.cn.
Nanoscale
|August 5, 2020
Summary
Researchers developed a new stretchable yarn from poly(ethylene terephthalate) (PET), silver nanowires (AgNWs), and polydimethylsiloxane (PDMS) that offers stable heating and precise sensing for wearable electronics.
Area of Science:
- Materials Science
- Textile Engineering
- Nanotechnology
Background:
- Stretchable and flexible electronics are crucial for human-machine interaction, motion monitoring, and healthcare.
- Integrating stable heating and precise sensing into a single conducting yarn remains a challenge.
Purpose of the Study:
- To design and prepare a multifunctional yarn capable of both stable heating and precise sensing.
- To evaluate the electromechanical properties, durability, heating performance, and sensing capabilities of the developed yarn.
Main Methods:
- Fabrication of a yarn composed of poly(ethylene terephthalate) (PET), silver nanowires (AgNWs), and polydimethylsiloxane (PDMS).
- Characterization of the yarn's electrical conductivity, strain tolerance, and electromechanical stability through cyclic testing.
- Evaluation of heating performance and breathability in a fabric application.
- Assessment of sensing sensitivity for human motion monitoring.
Main Results:
- The PET/AgNW/PDMS yarn demonstrated high electrical conductivity (≈3 Ω cm-1) and excellent strain tolerance (up to 100%).
- Negligible electromechanical performance loss was observed after 1700 strain cycles.
- The yarn exhibited excellent heating performance, breathability, and high sensitivity for detecting both gross and fine human movements.
Conclusions:
- The developed PET/AgNW/PDMS yarn successfully integrates stable heating and precision sensing functionalities.
- This multifunctional yarn shows significant potential for advanced wearable electronic devices in healthcare and human-motion monitoring applications.
