From Dual-Mode Triboelectric Nanogenerator to Smart Tactile Sensor: A Multiplexing Design.

Li, Tao; Zou, Jingdian; Xing, Fei; Zhang, Meng; Cao, Xia; Wang, Ning; Wang, Zhong Lin · ACS Nano · 2017

basic_science · Level V

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Abstract

Triboelectric nanogenerators (TENGs) can be applied for the next generation of artificial intelligent products, where skin-like tactile sensing advances the ability of robotics to feel and interpret environment. In this paper, a flexible and thin tactile sensor was developed on the basis of dual-mode TENGs. The effective transduction of touch and pressure stimulus into independent and interpretable electrical signals permits the instantaneous sensing of location and pressure with a plane resolution of 2 mm, a high-pressure-sensing sensitivity up to 28 mV·N<sup>-1</sup>, and a linear pressure detection ranging from 40 to 140 N. Interestingly, this self-powered dual-mode sensor can even interpret contact and hardness of objects by analyzing the shape of the current peak, which makes this low-cost TENG-based sensor promising for applications in touch screens, electronic skins, healthcare, and environmental survey.

Medical subject headings