聚二甲基硅氧烷
材料科学
应变计
标度系数
电阻式触摸屏
互连
扭转(腹足类)
压力传感器
纳米技术
复合材料
光电子学
电阻和电导
制作
计算机科学
机械工程
医学
工程类
外科
病理
替代医学
计算机视觉
计算机网络
作者
Changhyun Pang,Gil-Yong Lee,Tae–il Kim,Sang Moon Kim,Hong Nam Kim,Sung‐Hoon Ahn,Kune Y. Suh
出处
期刊:Nature Materials
[Springer Nature]
日期:2012-07-29
卷期号:11 (9): 795-801
被引量:1494
摘要
Flexible skin-attachable strain-gauge sensors are an essential component in the development of artificial systems that can mimic the complex characteristics of the human skin. In general, such sensors contain a number of circuits or complex layered matrix arrays. Here, we present a simple architecture for a flexible and highly sensitive strain sensor that enables the detection of pressure, shear and torsion. The device is based on two interlocked arrays of high-aspect-ratio Pt-coated polymeric nanofibres that are supported on thin polydimethylsiloxane layers. When different sensing stimuli are applied, the degree of interconnection and the electrical resistance of the sensor changes in a reversible, directional manner with specific, discernible strain-gauge factors. The sensor response is highly repeatable and reproducible up to 10,000 cycles with excellent on/off switching behaviour. We show that the sensor can be used to monitor signals ranging from human heartbeats to the impact of a bouncing water droplet on a superhydrophobic surface.
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