Wang Dong, Sheng Bin, Peng Lina, Huang Yuanshen, Ni Zhengji
School of Optical Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China.
Shanghai Key Laboratory of Modern Optical Systems, Engineering Research Center of Optical Instruments and Systems, Shanghai 200093, China.
Polymers (Basel). 2019 Aug 31;11(9):1433. doi: 10.3390/polym11091433.
A stretchable optical sensor can quantify the strain generated by human movement, which has been widely studied in the development of health monitoring systems, human-machine interfaces and wearable devices. This paper reports a graphene-added polydimethylsiloxane (PDMS) fiber, which has high tensile properties and good light transmittance suitable for detecting human movement. When the graphene-added PDMS fiber is stretched, the concentration of graphene per unit volume is constant, and the sensor uses the optical loss of the beam through the graphene PDMS fiber to detect the tensile strain. The fiber has excellent strain-sensing performance, outstanding sensitivity, a tensile property of 150%, and an excellent waterproofing performance. The linear response and repeated response in large dynamic range could reach 100% stability. The results show that the sensor can be used to detect human motion detection. These excellent properties indicate that the fiber has potential applications in wearable devices, soft robots and electronic skin.
一种可拉伸的光学传感器能够量化人体运动产生的应变，这在健康监测系统、人机接口和可穿戴设备的开发中已得到广泛研究。本文报道了一种添加石墨烯的聚二甲基硅氧烷（PDMS）纤维，其具有高拉伸性能和良好的透光率，适用于检测人体运动。当添加石墨烯的PDMS纤维被拉伸时，单位体积内石墨烯的浓度保持不变，该传感器利用光束通过石墨烯PDMS纤维时的光学损耗来检测拉伸应变。该纤维具有优异的应变传感性能、出色的灵敏度、150%的拉伸性能以及出色的防水性能。在大动态范围内的线性响应和重复响应可达到100%的稳定性。结果表明，该传感器可用于人体运动检测。这些优异的性能表明该纤维在可穿戴设备、软体机器人和电子皮肤方面具有潜在应用。
