Wearable multifunctional sensors using printed stretchable conductors made of silver nanowires
Wearable multifunctional sensors using printed stretchable conductors made of silver nanowires
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DOI：
10.1039/c3nr05496a
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发表时间：
2014-01-01
期刊：
影响因子：
6.7
通讯作者：
Zhu, Yong
中科院分区：
文献类型：
--
作者：
Yao, Shanshan;Zhu, Yong
为了获得高灵敏度和可穿戴的传感器，人们已经做出了相当大的努力，这些传感器可以同时检测多种刺激，如拉伸、压力、温度或触摸。在这里，我们开发了高度可伸缩的多功能传感器，可以检测应变(高达50%)、压力(高达1.2兆帕)和手指触摸，具有高灵敏度、快速响应时间(约40ms)和良好的压力映射功能。报道的传感器利用电容传感机制，其中银纳米线用作电极(导体)，Ecoflex用作介质。银纳米线电极是丝网印刷的。我们的传感器已被证明可用于多种可穿戴应用，包括监控拇指运动、感知膝盖骨反射(膝跳)中的膝关节应变以及其他人类运动，如行走、奔跑和蹲下跳跃，展示了此类传感器在机器人系统、假肢、医疗保健和柔性触摸屏中的潜在用途。
Considerable efforts have been made to achieve highly sensitive and wearable sensors that can simultaneously detect multiple stimuli such as stretch, pressure, temperature or touch. Here we develop highly stretchable multifunctional sensors that can detect strain (up to 50%), pressure (up to similar to 1.2 MPa) and finger touch with high sensitivity, fast response time (similar to 40 ms) and good pressure mapping function. The reported sensors utilize the capacitive sensing mechanism, where silver nanowires are used as electrodes (conductors) and Ecoflex is used as a dielectric. The silver nanowire electrodes are screen printed. Our sensors have been demonstrated for several wearable applications including monitoring thumb movement, sensing the strain of the knee joint in patellar reflex (knee-jerk) and other human motions such as walking, running and jumping from squatting, illustrating the potential utilities of such sensors in robotic systems, prosthetics, healthcare and flexible touch panels.