Dynamic pressure mapping of personalized handwriting by a flexible sensor matrix based on the mechanoluminescence process.

Wang, Xiandi; Zhang, Hanlu; Yu, Ruomeng; Dong, Lin; Peng, Dengfeng; Zhang, Aihua; Zhang, Yan; Liu, Hong et al. · Adv Mater · 2015

basic_science · Level V

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Abstract

A self-powered pressure-sensor matrix based on ZnS:Mn particles for more-secure signature collection is presented, by recording both handwritten signatures and the pressure applied by the signees. This large-area, flexible sensor matrix can map 2D pressure distributions in situ, either statically or dynamically, and the piezophotonic effect is proposed to initiate the mechanoluminescence process once a dynamic mechanical strain is applied.