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Air-Flow-Driven Triboelectric Nanogenerators for Self-Powered Real-Time Respiratory Monitoring.

Authors
  • Wang, Meng1
  • Zhang, Jiahao1
  • Tang, Yingjie1
  • Li, Jun2
  • Zhang, Baosen1
  • Liang, Erjun1
  • Mao, Yanchao1
  • Wang, Xudong2
  • 1 MOE Key Laboratory of Materials Physics, School of Physics and Engineering , Zhengzhou University , Zhengzhou 450001 , China. , (China)
  • 2 Department of Materials Science and Engineering , University of Wisconsin-Madison , Madison , Wisconsin 53706 , United States. , (United States)
Type
Published Article
Journal
ACS Nano
Publisher
American Chemical Society
Publication Date
Jun 04, 2018
Identifiers
DOI: 10.1021/acsnano.8b02562
PMID: 29847095
Source
Medline
Keywords
Language
English
License
Unknown

Abstract

Respiration is one of the most important vital signs of humans, and respiratory monitoring plays an important role in physical health management. A low-cost and convenient real-time respiratory monitoring system is extremely desirable. In this work, we demonstrated an air-flow-driven triboelectric nanogenerator (TENG) for self-powered real-time respiratory monitoring by converting mechanical energy of human respiration into electric output signals. The operation of the TENG was based on the air-flow-driven vibration of a flexible nanostructured polytetrafluoroethylene (n-PTFE) thin film in an acrylic tube. This TENG can generate distinct real-time electric signals when exposed to the air flow from different breath behaviors. It was also found that the accumulative charge transferred in breath sensing corresponds well to the total volume of air exchanged during the respiration process. Based on this TENG device, an intelligent wireless respiratory monitoring and alert system was further developed, which used the TENG signal to directly trigger a wireless alarm or dial a cell phone to provide timely alerts in response to breath behavior changes. This research offers a promising solution for developing self-powered real-time respiratory monitoring devices.

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