Triboelectric-based transparent secret code
Published in Advanced Science, 2018
Recommended citation: Zuqing Yuan#, Xinyu Du#, Nianwu Li, Yingying Yin, Ran Cao, Xiuling Zhang, Shuyu Zhao, Huidan Niu, Tao Jiang, Weihua Xu, Zhong Lin Wang, Congju Li, "Triboelectric-based transparent secret code", Adv. Sci. 5, 1700881 (2018) https://doi.org/10.1002/advs.201700881
Abstract
Private and security information for personal identification requires an encrypted tool to extend communication channels between human and machine through a convenient and secure method. Here we report a triboelectric-based transparent secret code (TSC) that enables self-powered sensing and information identification simultaneously in a rapid process method. The transparent and hydrophobic TSC can be conformed to any cambered surface due to its high flexibility which extends the application scenarios greatly. Independent of the power source, the TSC can induce obvious electric signals only by surface contact. This TSC is velocity-dependent and capable of achieving a peak voltage of ~4 V at a resistance load of 10 MW and a sliding speed of 0.1 m/s, according to a 2 mm × 20 mm rectangular stripe. The fabricated TSC can maintain its performance after reciprocating rolling for about 5000 times. We demonstrate the applications of TSC as a self-powered code device, and the ordered signals can be recognized through the height of the electric peaks, which can be further transferred into specific information by the processing program. The designed TSC has great potential in personal identification, commodity circulation, valuables management and security defense applications.