期刊
ADVANCED MATERIALS
卷 29, 期 42, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.201703004
关键词
micropatterned substrates; omnidirectional stretchability; silver pastes; single-walled carbon nanotubes; stretchable pressure sensors
类别
资金
- National Research Foundation (NRF) - Ministry of Science, ICT & Future Planning [2016R1A2A1A05005423]
- National Research Foundation of Korea [2016R1A2A1A05005423] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
The development of omnidirectionally stretchable pressure sensors with high performance without stretching-induced interference has been hampered by many challenges. Herein, an omnidirectionally stretchable piezoresistive pressure-sensing device is demonstrated by combining an omniaxially stretchable substrate with a 3D micropattern array and solution-printing of electrode and piezoresistive materials. A unique substrate structural design and materials mean that devices that are highly sensitive are rendered, with a stable out-of-plane pressure response to both static (sensitivity of 0.5 kPa(-1) and limit of detection of 28 Pa) and dynamic pressures and the minimized in-plane stretching responsiveness (a small strain gauge factor of 0.17), achieved through efficient strain absorption of the electrode and sensing materials. The device can detect human-body tremors, as well as measure the relative elastic properties of human skin. The omnidirectionally stretchable pressure sensor with a high pressure sensitivity and minimal stretch-responsiveness yields great potential to skin-attachable wearable electronics, human-machine interfaces, and soft robotics applications.
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