Liquid Metal Gated Tribotronic Transistors as an Electronic Gradienter for Angle Measurement

Abstract

Abstract Liquid metals (LMs) have attracted great attentions in electronics for great interface contact and flowability. Here, an LM‐gated tribotronic transistor (LMTT) is demonstrated, in which an electrostatic potential is created through the triboelectrification of LM and dielectric layer, and the carrier transport between drain and source can be tuned by the swing‐induced electrostatic potential instead of the traditional gate voltage. Based on the fabricated LMTTs, an electronic gradienter is developed, which can be used for angle measurement and exhibits a great sensitivity, large sensing range, and excellent stability. This work has first introduced the LM into the tribotronic device, which may have potential applications in mechanical calibration, civil engineering, and geologic exploration.