Highly Compressible Integrated Supercapacitor–Piezoresistance‐Sensor System with CNT–PDMS Sponge for Health Monitoring |
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Authors: | Yu Song Haotian Chen Zongming Su Xuexian Chen Liming Miao Jinxin Zhang Xiaoliang Cheng Haixia Zhang |
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Affiliation: | 1. National Key Lab of Nano/Micro Fabrication Technology, Institute of Microelectronics, Peking University, Beijing, China;2. Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, China |
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Abstract: | Rapid improvement of wearable electronics stimulates the demands for the matched functional devices and energy storage devices. Meanwhile, wearable microsystem requires every parts possessing high compressibility to accommodate large‐scale mechanical deformations and complex conditions. In this work, a general carbon nanotube–polydimethylsiloxane (CNT–PDMS) sponge electrode is fabricated as the elementary component of the compressible system. CNT–PDMS sponge performs high sensitivity as a piezoresistance sensor, which is capable of detecting stress repeatedly and owns great electrochemical performance as a compressible supercapacitor which maintains stably under compressive strains, respectively. Assembled with the piezoresistance sensor and the compressible supercapacitor, such highly compressible integrated system can power and modulate the low‐power electronic devices reliably. More importantly, attached to the epidermal skin or clothes, it can detect human motions, ranging from speech recognition to breathing record, thus showing feasibility in real‐time health monitor and human–machine interfaces. |
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Keywords: | CNT– PDMS sponge compressible system health monitor piezoresistance sensors supercapacitors |
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