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Stretchable and Highly Sensitive Braided Composite Yarn@Polydopamine@Polypyrrole for Wearable Applications
Junjie Pan1, Mengyun Yang1, Lei Luo1
1State Key Laboratory of New Textile Materials and Advanced Processing Technologies , Wuhan Textile University , Wuhan 430073 , China.
ACS Applied Materials & Interfaces
|January 24, 2019
Summary
Researchers developed highly sensitive wearable strain sensors using braided composite yarns coated with polypyrrole. These sensors offer a wide strain range and stability for monitoring human motion and electrical heating applications.
Area of Science:
- Materials Science
- Wearable Electronics
- Sensor Technology
Background:
- Flexible wearable devices are gaining traction.
- A key challenge is creating strain sensors with a large workable strain range and high sensitivity.
Purpose of the Study:
- To fabricate highly sensitive wearable strain sensors.
- To investigate the electromechanical and strain sensing properties of novel composite yarns.
Main Methods:
- In situ polymerization of polypyrrole on polydopamine-templated braided composite yarns (BYs-PDA-PPy).
- Characterization of electromechanical performance and strain sensing properties.
Main Results:
- BYs-PDA-PPy strain sensors demonstrate a large workable strain range (up to 105%).
- High sensitivity (gauge factor of 51.2 at 0%-40% strain, 27.6 at 40%-105% strain), long-term stability, and electrical heating capabilities.
- Successful real-time monitoring of human motions and potential for fabric integration.
Conclusions:
- The developed BYs-PDA-PPy strain sensors show significant potential for wearable electronics.
- The unique braided structure contributes to the sensors' exceptional performance.
- These sensors are suitable for both motion monitoring and large-area electrical heating applications.
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