压阻效应
材料科学
压力传感器
触觉传感器
纳米复合材料
灵敏度(控制系统)
电极
电子皮肤
复合材料
多孔性
纳米技术
光电子学
电子工程
计算机科学
机械工程
机器人
人工智能
工程类
物理化学
化学
作者
Jianpeng Zhang,Song Wei,Caichao Liu,Chao Shang,Zhaoqiang He,Yu Duan,Zhengchun Peng
标识
DOI:10.1038/s41378-023-00630-z
摘要
Abstract In this work, we propose porous fluororubber/thermoplastic urethane nanocomposites ( PFTNs ) and explore their intrinsic piezoresistive sensitivity to pressure. Our experiments reveal that the intrinsic sensitivity of the PFTN-based sensor to pressure up to 10 kPa increases up to 900% compared to the porous thermoplastic urethane nanocomposite ( PTN ) counterpart and up to 275% compared to the porous fluororubber nanocomposite ( PFN ) counterpart. For pressures exceeding 10 kPa, the resistance-pressure relationship of PFTN follows a logarithmic function, and the sensitivity is 221% and 125% higher than that of PTN and PFN, respectively. With the excellent intrinsic sensitivity of the thick PFTN film, a single sensing unit with integrated electrode design can imitate human skin for touch detection, pressure perception and traction sensation. The sensing range of our multimodal tactile sensor reaches ~150 Pa, and it exhibits a linear fit over 97% for both normal pressure and shear force. We also demonstrate that an electronic skin, made of an array of sensing units, is capable of accurately recognizing complex tactile interactions including pinch, spread, and tweak motions.
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