Controllable synthesis of nickel nanowires and its application in high sensitivity, stretchable strain sensor for body motion sensing
Controllable synthesis of nickel nanowires and its application in high sensitivity, stretchable strain sensor for body motion sensing
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DOI：
10.1039/c7tc05970a
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发表时间：
2018-05
影响因子：
6.4
通讯作者：
Shan Wang;Chen Kaifeng;W. Min;L. Haosheng;Cheng Guorui;Liu Jian;Xu Luhang;Jianshe Yue;Cheng Meng;X. Zheng;Liu Suyu;Chong Yin;Zongrong Wang;P. Du;S. Qu;C. Leung
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文献类型：
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作者：
Shan Wang;Chen Kaifeng;W. Min;L. Haosheng;Cheng Guorui;Liu Jian;Xu Luhang;Jianshe Yue;Cheng Meng;X. Zheng;Liu Suyu;Chong Yin;Zongrong Wang;P. Du;S. Qu;C. Leung
提出了一种简单、低成本的磁场辅助化学还原方法，可在低至60℃的温度下合成直径可控、长径比高的镍纳米线（NiNWs）。在170 mT的磁场条件下，通过控制反应温度、NiCl2浓度和还原剂用量，制备出了直径低至180±21 nm、L/D比高达300的NiNWs。在此基础上，提出了一种由NiNWs和Ecoflex弹性体组成的三明治结构的高灵敏度、可拉伸应变传感器。测量系数高达200，应变率达到100%。介绍了该传感器在人体运动检测中的应用，包括手指手势、面部表情和不同的发音。该研究为下一代机器人智能传感器以及人机接口应用提供了一个有前途的解决方案。
A facile, low-cost magnetic field-assisted chemical reduction method was proposed for synthesizing nickel nanowires (NiNWs) with both controllable diameter and high length to diameter (L/D) ratio at temperature as low as 60 °C. NiNWs with diameter as low as 180 ± 21 nm and L/D ratio as high as 300 were achieved by controlling the reaction temperature, NiCl2 concentration and the quantity of reductant in a magnetic field of 170 mT. Based on the NiNWs, a high-sensitivity and stretchable strain sensor with sandwich structure consisting of NiNWs and Ecoflex elastomer was proposed. Gauge factor as high as 200 was demonstrated up to a strain of 100%. Applications of the sensor in detecting body motion including finger gestures, facial expressions and different phonations are presented. This study provides a promising solution for smart sensors for next generation robotics as well as for human–machine interfacing applications.