Highly sensitive wearable strain sensor based on silver nanowires and nanoparticles
Highly sensitive wearable strain sensor based on silver nanowires and nanoparticles
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DOI：
10.1088/1361-6528/aabbba
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发表时间：
2018-04
期刊：
影响因子：
3.5
通讯作者：
Sang Shengbo;L. Lihua;Jian Aoqun;Du Qianqian;Ji Jianlong;Zhang Qiang;Zhang Wendong
中科院分区：
文献类型：
--
作者：
Sang Shengbo;L. Lihua;Jian Aoqun;Du Qianqian;Ji Jianlong;Zhang Qiang;Zhang Wendong
在这里，我们提出了一个高灵敏度和可拉伸的应变传感器的基础上银纳米粒子和纳米线（银纳米粒子和纳米线），推进电子皮肤的快速发展。为了提高银纳米线（Ag NWs）应变传感器的灵敏度，在聚二甲基硅氧烷（PDMS）中加入Ag纳米粒子和纳米线作为辅助填料。银纳米颗粒（Ag NP）增加了电子的导电路径，导致所得传感器的低电阻（14.9 Ω）。基于Ag纳米颗粒和纳米线的应变传感器显示出强的压阻性，其可调应变计因子（GF）为3766，并且随着应变从0%线性增加到28.1%，电阻发生变化。高GF表明Ag NPs在传感器中的不可替代的作用。此外，我们的高性能应变传感器的适用性已通过其感知人类说话、手指弯曲、手腕抬起和行走引起的运动的能力得到证明。
Here, we propose a highly sensitive and stretchable strain sensor based on silver nanoparticles and nanowires (Ag NPs and NWs), advancing the rapid development of electronic skin. To improve the sensitivity of strain sensors based on silver nanowires (Ag NWs), Ag NPs and NWs were added to polydimethylsiloxane (PDMS) as an aid filler. Silver nanoparticles (Ag NPs) increase the conductive paths for electrons, leading to the low resistance of the resulting sensor (14.9 Ω). The strain sensor based on Ag NPs and NWs showed strong piezoresistivity with a tunable gauge factor (GF) at 3766, and a change in resistance as the strain linearly increased from 0% to 28.1%. The high GF demonstrates the irreplaceable role of Ag NPs in the sensor. Moreover, the applicability of our high-performance strain sensor has been demonstrated by its ability to sense movements caused by human talking, finger bending, wrist raising and walking.