A Self‐Conformable Smart Skin with Sensing and Variable Stiffness Functions
A Self‐Conformable Smart Skin with Sensing and Variable Stiffness Functions
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DOI：
10.1002/aisy.201900054
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发表时间：
2019-08
影响因子：
7.4
通讯作者：
Yu Qiu;Siyuan Ma;Q. Pei;J. Holbery
中科院分区：
文献类型：
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作者：
Yu Qiu;Siyuan Ma;Q. Pei;J. Holbery
集成了传感和自适应功能的人工智能皮肤为表皮上的可穿戴电子产品或下一代机器人技术提供了一个新平台。在此，开发了基于自适应双稳态电活性聚合物（BSEP）的高灵敏度电容式触摸传感器。该器件结合了适形聚合物和触摸传感器的特性，赠款传感器能够适应各种表面的形状和不同的工作条件。选择喷涂的银纳米线（AgNW）作为用于高分辨率图案化的传感器电极。独特的天线形电极图案在0.13 pF的基线接地时可产生31%的电容变化。BSEP通过嵌入式柔性加热器提供刚度可调性。该加热器将交叉指型银与碳纳米管结合起来，提供均匀和高效的加热，以创建刚度在100 MPa和数十kPa之间的可调设备，提供了很大的工作灵活性。高效的电阻加热器在低至7 V的输入电压下以48 °C min−1的速率在40 x 40 mm的面积上提供均匀稳定的加热。这项研究将智能聚合物系统和薄膜电子技术融合在一起，推进了舒适的、类似皮肤的功能电子技术。
Artificial smart skins that integrate sensing and adaptiveness present a novel platform in wearable electronics on epidermis or next‐generation robotics. Herein, a highly sensitive capacitive touch senor based on a self‐conformable bi‐stable electroactive polymer (BSEP) is developed. The device combines the properties of conformable polymers and touch sensors, which grants the sensor the ability to conform to the shape of various surfaces and in different working conditions. A spray‐coated silver nanowire (AgNW) is selected as the sensor electrode for high‐resolution patterning. The unique antenna‐shaped electrode pattern results in a capacitance change of 31% when in contact with ground at a baseline of 0.13 pF. The BSEP provides stiffness tunability via an embedded compliant heater. The heater combines interdigitated silver with carbon nanotubes delivering uniform and highly efficient heating to create a tunable device with stiffness between 100s of MPa and tens of kPa, providing a large working flexibility. The efficient resistive heater provides uniform and stable heating over an area of 40 by 40 mm with a rate of 48 °C min−1 at an input voltage as low as 7 V. This research merges intelligent polymeric systems and thin film electronics advancing conformable, skin‐like functional electronics.