Journal
ADVANCED MATERIALS
Volume 34, Issue 6, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.202107758
Keywords
breath monitoring; face masks; self-powered devices; ultrathin materials; wireless operation
Categories
Funding
- Special Postdoctoral Researchers Program (SPDR) of RIKEN
- University of Macau [SRG2021-00001-FST]
- Science and Technology Development Fund, Macau SAR (FDCT) [0059/2021/AFJ, 0040/2021/A1]
- Japan Society for the Promotion of Science (JSPS) [JP18H05469]
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Researchers have developed a smart face mask that integrates an ultra-thin self-powered pressure sensor and a compact readout circuit for monitoring breath information wirelessly. This lightweight and portable mask shows great potential for various applications.
A smart face mask that can conveniently monitor breath information is beneficial for maintaining personal health and preventing the spread of diseases. However, some challenges still need to be addressed before such devices can be of practical use. One key challenge is to develop a pressure sensor that is easily triggered by low pressure and has excellent stability as well as electrical and mechanical properties. In this study, a wireless smart face mask is designed by integrating an ultrathin self-powered pressure sensor and a compact readout circuit with a normal face mask. The pressure sensor is the thinnest (totally compressed thickness of approximate to 5.5 mu m) and lightest (total weight of approximate to 4.5 mg) electrostatic pressure sensor capable of achieving a peak open-circuit voltage of up to approximate to 10 V when stimulated by airflow, which endows the sensor with the advantage of readout circuit miniaturization and makes the breath-monitoring system portable and wearable. To demonstrate the capabilities of the smart face mask, it is used to wirelessly measure and analyze the various breath conditions of multiple testers.
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