文献类型：期刊文献

英文题名：Facile Electret-Based Self-Powered Soft Sensor for Noncontact Positioning and Information Translation

作者：Liu, Jing[1];Chen, Yuqian[1];Liu, Yuji[2];Wu, Chengyuan[2];Li, Zhongqi[1];Gao, Yuliang[1];Qiu, Xunlin[2];Wang, Yiming[1,2];Guo, Xuhong[1];Xuan, Fuzhen[2]

机构：[1]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Shanghai Key Lab Intelligent Sensing & Detect Tech, Shanghai 200237, Peoples R China

年份：2024

卷号：16

期号：22

起止页码：29188

外文期刊名：ACS APPLIED MATERIALS & INTERFACES

收录：;EI(收录号：20242216175418);WOS:【SCI-EXPANDED(收录号:WOS:001229499000001)】；

基金：We acknowledge the financial support of NSFC Grants (21908061), Shanghai Pilot Program for Basic Research (22TQ1400100-9), the "Chenguang Program" supported by the Shanghai Education Development Foundation and Shanghai Municipal Education Commission (20CG36), National Key Research and Development Program of China (2022YFD70050101), Natural Science Foundation of Shanghai (22ZR1417700), the Open Project of State Key Laboratory of Chemical Engineering (SKL-ChE-23C01), and the Fundamental Research Funds for the Central Universities.

语种：英文

外文关键词：electrets; self-powered sensors; noncontactsensors; noncontact positioning; information translation

摘要：Noncontact sensors have demonstrated significant potential in human-machine interactions (HMIs) in terms of hygiene and less wear and tear. The development of soft, stable, and simply structured noncontact sensors is highly desired for their practical applications in HMIs. This work reports on electret-based self-powered noncontact sensors that are soft, transparent, stable, and easy to manufacture. The sensors contain a three-layer structure with a thickness of 0.34 mm that is fabricated by simply stacking a polymeric electret layer, an electrode layer, and a substrate layer together. The fabricated sensors show high charge-retention capability, keeping over 98% of the initial surface potential even after 90 h, and can accurately and repeatedly sense external approaching objects with impressive durability. The intensity of the detected signal shows a strong dependence on the distance between the object and the sensor, capable of sensing a distance as small as 2 mm. Furthermore, the sensors can report stable signals in response to external objects over 3000 cycles. By virtue of the signal dependence on distance, an intelligent noncontact positioning system is developed that can precisely detect the location of an approaching object. Finally, by integrating with eyeglasses, the transparent sensor successfully captures the movements of blinks for information translation. This work may contribute to the development of stable and easily manufactured noncontact soft sensors for HMI applications, for instance, assisting with communication for locked-in syndrome patients.