Department of Chemical and Biological Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul, 02841, Republic of Korea.
Nanoscale. 2017 Jun 8;9(22):7631-7640. doi: 10.1039/c7nr02147j.
In this study, we report on the development of a stretchable, transparent, and skin-attachable strain sensor integrated with a flexible electrochromic device as a human skin-inspired interactive color-changing system. The strain sensor consists of a spin-coated conductive nanocomposite film of poly(vinyl alcohol)/multi-walled carbon nanotube/poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) on a polydimethylsiloxane substrate. The sensor exhibits excellent performance of high sensitivity, high durability, fast response, and high transparency. An electrochromic device (ECD) made of electrochemically synthesized polyaniline nanofibers and VO on an indium-tin-oxide-coated polyethylene terephthalate film experiences a change in color from yellow to dark blue on application of voltage. The strain sensor and ECD are integrated on skin via an Arduino circuit for an interactive color change with the variation of the applied strain, which enables a real-time visual display of body motion. This integrated system demonstrates high potential for use in interactive wearable devices, military applications, and smart robots.
在这项研究中，我们报告了一种可拉伸、透明且可贴附于皮肤的应变传感器的开发，该传感器与柔性电致变色器件集成，作为一种类似于人类皮肤的交互式变色系统。应变传感器由聚（乙醇酸）/多壁碳纳米管/聚（3,4-乙撑二氧噻吩）：聚（苯乙烯磺酸盐）的旋涂导电纳米复合材料薄膜在聚二甲基硅氧烷基底上制成。该传感器具有高灵敏度、高耐久性、快速响应和高透明度等优异性能。由电化学合成的聚苯胺纳米纤维和 VO 制成的电致变色器件（ECD）在施加电压时会从黄色变为深蓝色。应变传感器和 ECD 通过 Arduino 电路集成在皮肤上，可通过施加应变的变化进行交互式变色，从而实现身体运动的实时可视化显示。该集成系统在交互式可穿戴设备、军事应用和智能机器人方面具有很高的应用潜力。
