Flexible Capacitive Tactile Sensor Based on Micropatterned Dielectric Layer
2016; Wiley; Volume: 12; Issue: 36 Linguagem: Inglês
10.1002/smll.201600760
ISSN1613-6829
AutoresTie Li, Hui Luo, Qin Lin, Xuewen Wang, Zuoping Xiong, Haiyan Ding, Yang Gu, Zheng Liu, Ting Zhang,
Tópico(s)Interactive and Immersive Displays
ResumoFlexible 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.
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