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Flexible Capacitive Tactile Sensor Based on Micropatterned Dielectric Layer
Author(s) -
Li Tie,
Luo Hui,
Qin Lin,
Wang Xuewen,
Xiong Zuoping,
Ding Haiyan,
Gu Yang,
Liu Zheng,
Zhang Ting
Publication year - 2016
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201600760
Subject(s) - capacitive sensing , tactile sensor , materials science , wearable computer , layer (electronics) , dielectric , electrode , wearable technology , optoelectronics , nanotechnology , electronic skin , bending , computer science , acoustics , robot , artificial intelligence , composite material , embedded system , chemistry , physics , operating system
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 flexible 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 (≈38 ms). In addition, the flexible 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.