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Vol. 13 (2021)

Fully Fabric-Based Triboelectric Nanogenerators as Self-Powered Human–Machine Interactive Keyboards

https://doi.org/10.1007/s40820-021-00621-7
Jia Yi
School of Physical Science and Technology, Guangxi University, Nanning 530004, People’s Republic of China
Kai Dong
CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro‑Nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 100083, People’s Republic of China
Shen Shen
CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro‑Nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 100083, People’s Republic of China
Yang Jiang
CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro‑Nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 100083, People’s Republic of China
Xiao Peng
CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro‑Nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 100083, People’s Republic of China
Cuiying Ye
CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro‑Nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 100083, People’s Republic of China
Zhong Lin Wang
CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro‑Nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 100083, People’s Republic of China

Corresponding Author: Zhong Lin Wang

zhong.wang@mse.gatech.edu

Nano-Micro Letters, Vol. 13 (2021), Article Number: 103

Abstract

Combination flexible and stretchable textiles with self-powered sensors bring a novel insight into wearable functional electronics and cyber security in the era of Internet of Things. This work presents a highly flexible and self-powered fully fabric-based triboelectric nanogenerator (F-TENG) with sandwiched structure for biomechanical energy harvesting and real-time biometric authentication. The prepared F-TENG can power a digital watch by low-frequency motion and respond to the pressure change by the fall of leaves. A self-powered wearable keyboard (SPWK) is also fabricated by integrating large-area F-TENG sensor arrays, which not only can trace and record electrophysiological signals, but also can identify individuals' typing characteristics by means of the Haar wavelet. Based on these merits, the SPWK has promising applications in the realm of wearable electronics, self-powered sensors, cyber security, and artificial intelligences.


Highlights:


1 A fully fabric-based mechanical energy harvester with a sandwich structure is developed, which can respond to the pressure change by the fall of leaves.
2 A self-powered keyboard with the ability of biometric recognition is demonstrated, which is able to resist illegal intrusion by judging the keystroke behaviors.

Keywords

Triboelectric nanogenerators Self-powered keyboard Human–machine interface Wearable electronics Fully fabric-based
Yi, Jia, Kai Dong, Shen Shen, Yang Jiang, Xiao Peng, Cuiying Ye, and Zhong Lin Wang. 2021. “Fully Fabric-Based Triboelectric Nanogenerators As Self-Powered Human–Machine Interactive Keyboards”. Nano-Micro Letters 13 (April):103. https://doi.org/10.1007/s40820-021-00621-7.
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