Adaptive wind-evoked power devices for autonomous motor control applications

Wei Sha, Qilin Hua, Yuanhong Shi, Jiangwen Wang, Xiao Cui, Zilong Dong, Bingjun Wang, Jianan Niu, Weiguo Hu*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

With the explosive development of artificial intelligence, power devices integrated with real-time sensing functions have attracted tremendous attention and will play an important role in intelligent control applications. In this work, a cantilever-structured AlGaN/AlN/GaN high electron mobility transistor integrated with ultrahigh sensitivity and large output power modulation is fabricated through a low-damage anisotropic and isotropic etching process, and achieves excellent electrical performance with a maximal output current of 236 mA mm-1 at a gate bias of 1 V. Due to the facile structure of the cantilever, the device is capable of sensing external stimuli, e.g., gentle wind, and in turn controlling the power output. Significantly, the device exhibits an extraordinarily large output power modulation (?P: 1.68 × 103 W cm-2) under external stimuli in the saturation region, and obtains an ultrahigh strain sensitivity (gauge factor: 1472) under gate voltage in the linear region. Moreover, the wind-evoked mutational behavior of crickets is emulated by the device to demonstrate the capability of autonomous motor control. Such wind-evoked power devices ingeniously coupled with the dynamic piezotronic effect will have great significance in real-time sensing and actuation applications in artificial intelligence, autonomous driving, and aerospace.

Original languageEnglish
Pages (from-to)11783-11790
Number of pages8
JournalJournal of Materials Chemistry C
Volume10
Issue number32
DOIs
Publication statusPublished - 28 Jul 2022
Externally publishedYes

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Sha, W., Hua, Q., Shi, Y., Wang, J., Cui, X., Dong, Z., Wang, B., Niu, J., & Hu, W. (2022). Adaptive wind-evoked power devices for autonomous motor control applications. Journal of Materials Chemistry C, 10(32), 11783-11790. https://doi.org/10.1039/d2tc01933g