| Title |
A Rational Design of Bio-Derived Disulfide CANs for Wearable Capacitive Pressure Sensor |
| ID_Doc |
26841 |
| Authors |
Yang, D; Zhao, K; Yang, RL; Zhou, SW; Chen, M; Tian, H; Qu, DH |
| Title |
A Rational Design of Bio-Derived Disulfide CANs for Wearable Capacitive Pressure Sensor |
| Year |
2024 |
| Published |
Advanced Materials, 36, 30 |
| Abstract |
Classic approaches to integrate flexible capacitive sensor performance are to on-demand microstructuring dielectric layers and to adjust dielectric material compositions via the introduction of insoluble carbon additives (to increase sensitivity) or dynamic interactions (to achieve self-healing). However, the sensor's enhanced performances often come with increased material complexity, discouraging its circular economy. Herein, a new intrinsic self-healable, closed-loop recyclable dielectric layer material, a fully nature-derived dynamic covalent poly(disulfide) decorated with rich H bonding and metal-catechol complexations is introduced. The polymer network possesses a mechanically ductile character with an Arrhenius-type temperature-dependent viscoelasticity. The assembled capacitive pressure sensor is able to achieve a sensitivity of up to 9.26 kPa-1, fast response/recovery time of 32/24 ms, and can deliver consistent signals of continuous consecutive cycles even after being self-healed or closed-loop recycled for real-time detection of human motions. This is expected to be of high interest for current capacitive sensing research to move toward a life-like, high performance, and circular economy direction. It is a proof-of-concept work of an elastic dynamic adaptive polymer(disulfide) decorated with H bonds and metal-catechol complexations to construct into a sandwich-like, self-healable, closed-loop recyclable capacitive sensor with ultra-high sensitivity, decent stability, and the capability of monitoring various human motions on a real-time basis. image |
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