Versatile Electronic Skins for Motion Detection of Joints Enabled by Aligned Few-Walled Carbon Nanotubes in Flexible Polymer Composites
Versatile Electronic Skins for Motion Detection of Joints Enabled by Aligned Few-Walled Carbon Nanotubes in Flexible Polymer Composites
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通过柔性聚合物复合材料中对齐的少壁碳纳米管实现关节运动检测的多功能电子皮肤
DOI：
10.1002/adfm.201606604
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发表时间：
2017
影响因子：
19
通讯作者：
Liu Jie
中科院分区：
文献类型：
--
作者：
Zhu Hongfei;Wang Xuewen;Liang Jia;Lv Hongling;Tong Huayu;Ma Lianbo;Hu Yi;Zhu Guoyin;Zhang Ting;Tie Zuoxiu;Liu Zheng;Li Qingwen;Jin Zhong;Chen Liwei;Liu Jie
在这里，新的多功能电子皮肤（E-skins）的基础上对齐的少壁碳纳米管（AFWCNT）聚合物复合材料与压阻功能机制不同的“隧道电流通道”在随机分散的CNT聚合物复合材料的理论研究证明。所制备的E-皮肤的高性能源于嵌入柔性复合材料中的AFWCNT阵列的各向异性导电性和响应于弯曲或拉伸的“管到管”界面电阻的明显变化。基于聚合物/AFWCNT的弯曲敏感E-skin具有高精度和线性度，以及低功耗（<10 µW）和良好的稳定性（15000次弯曲-伸直循环后无降解）。此外，聚合物/AFWCNT复合材料还可用于构造对张力具有高敏感性的拉伸敏感E皮肤。基于聚合物/AFWCNT的E皮肤在应用于监测身体关节（如手指）的运动和姿势时表现出卓越的性能，这种能力可以在可穿戴人机通信接口、便携式运动检测器和仿生机器人中得到广泛应用。
Here, novel multifunctional electronic skins (E‐skins) based on aligned few‐walled carbon nanotube (AFWCNT) polymer composites with a piezoresistive functioning mechanism different from the mostly investigated theory of “tunneling current channels” in randomly dispersed CNT polymer composites are demonstrated. The high performances of as‐prepared E‐skins originate from the anisotropic conductivity of AFWCNT array embedded in flexible composite and the distinct variation of “tube‐to‐tube” interfacial resistance responsive to bending or stretching. The polymer/AFWCNT‐based flexion‐sensitive E‐skins exhibit high precision and linearity, together with low power consumption (<10 µW) and good stability (no degradation after 15 000 bending–unbending cycles). Moreover, polymer/AFWCNT composites can also be used for the construction of tensile‐sensitive E‐skins, which exhibit high sensitivity toward tensile force. The polymer/AFWCNT‐based E‐skins show remarkable performances when applied to monitor the motions and postures of body joints (such as fingers), a capability that can find wide applications in wearable human–machine communication interfaces, portable motion detectors, and bionic robots.