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- W3171421523 endingPage "106215" @default.
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- W3171421523 abstract "Surface-microengineering of the active layer in triboelectric tactile sensor enables to effectively reduce the surface stiffness of the non-ideal planar triboelectric film and increase the contact area during the triboelectric process. In this work, a facile and dynamically controllable two-step method based on the unique characteristic of ferrofluid has been proposed to fabricate a high-performance self-powered triboelectric tactile sensor. Through adjusting the distance and rotating angle of magnet, ferrofluid spikes with different lengths and inclination angles ranging from 30° to 90° can be obtained. The adjustable microstructures distributed on the active layer were analyzed theoretically and verified experimentally, indicating the inclined and high microstructures can effectively facilitate the sensing performance. When the inclination angle of the microstructure is 30°, the sensitivity delivers 6.75 kPa −1 with pressure lower than 44 kPa, and keeps excellent linearity with the sensitivity of 3.01 kPa −1 even the detection pressure reaches 250 kPa. Simultaneously, the tactile sensor has a fast response/recovery time of 75 ms and 56 ms, respectively. Finally, it was demonstrated to adopt in the bionics robotic hands for weight perception and attached to various parts of the human body for detecting physiological activities with outstanding repeatability and stability. A facile and dynamically controllable two-step method based on the unique characteristic of ferrofluid has been proposed to fabricate a high-performance self-powered triboelectric tactile sensor. The inclined and high microstructures can effectively facilitate the sensing performance. This sensor can be adopted in the bionics robotic hands or detect physiological activities with outstanding repeatability and stability. • Micro-engineered the dielectric surface of the tactile sensor with different inclination angles and length. • The smaller inclination angle and more height are beneficial to the sensitivity and high sensitivity detection range. • When the inclination angle is 30°, the sensitivity delivers 6.75 kPa −1 with pressure lower than 44 kPa." @default.
- W3171421523 created "2021-06-22" @default.
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- W3171421523 date "2021-09-01" @default.
- W3171421523 modified "2023-10-02" @default.
- W3171421523 title "Surface-microengineering for high-performance triboelectric tactile sensor via dynamically assembled ferrofluid template" @default.
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- W3171421523 doi "https://doi.org/10.1016/j.nanoen.2021.106215" @default.
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