Flexible Capacitive Tactile Sensor Based on Micropatterned Dielectric Layer
Flexible Capacitive Tactile Sensor Based on Micropatterned Dielectric Layer
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DOI：
10.1002/smll.201600760
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发表时间：
2016-09-28
期刊：
影响因子：
13.3
通讯作者：
Zhang, Ting
中科院分区：
文献类型：
--
作者：
Li, Tie;Luo, Hui;Zhang, Ting
柔性触觉传感器可以与周围环境进行同步交互，被认为是实现触觉的有效途径。本文利用天然荷叶表面的仿生微结构设计并制作了新型的高性能柔性电容式触觉传感器。利用荷叶表面独特的微图案作为电极模板，以聚苯乙烯微球作为电介质层，该传感器具有灵敏度高（0.815 kPa（-1））、动态响应范围宽（0 ~ 50 N）、响应时间快（约38 ms）等特点。此外，柔性电容传感器不仅适用于压力（触摸一根头发），还适用于弯曲和拉伸力。结果表明，所提出的电容式触觉传感器是一个有前途的候选人，为未来的应用在电子皮肤，可穿戴机器人，和生物医学设备。
Flexible tactile sensors are considered as an effective way to realize the sense of touch, which can perform the synchronized interactions with surrounding environment. Here, the utilization of bionic microstructures on natural lotus leaves is demonstrated to design and fabricate new-type of high-performance fl exible capacitive tactile sensors. Taking advantage of unique surface micropattern of lotus leave as the template for electrodes and using polystyrene microspheres as the dielectric layer, the proposed devices present stable and high sensing performance, such as high sensitivity (0.815 kPa(-1)), wide dynamic response range (from 0 to 50 N), and fast response time (approximate to 38 ms). In addition, the fl exible capacitive sensor is not only applicable to pressure (touch of a single hair), but also to bending and stretching forces. The results indicate that the proposed capacitive tactile sensor is a promising candidate for the future applications in electronic skins, wearable robotics, and biomedical devices.