Journal
NANO ENERGY
Volume 56, Issue -, Pages 693-699Publisher
ELSEVIER
DOI: 10.1016/j.nanoen.2018.12.003
Keywords
Piezoelectric device; Selenium nanowires; Self-powered sensor; Wearable electronics; Human physiological monitoring
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Funding
- College of Engineering and School of Industrial Engineering at Purdue University
- National Science Foundation [CMMI- 1762698]
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Smart sensing devices with high stretchability and self-powered characteristics are essential in future generation wearable human-integrated applications. Here we report for the first time scalable synthesis and integration of selenium (Se) nanowires into wearable piezoelectric devices, and explore the feasibility of such devices for self-powered sensing applications, e.g., physiological monitoring. The ultrathin device can be conformably worn onto the human body, effectively converting the imperceptible time-variant mechanical vibration from the human body into distinguishable electrical signals, e.g., gesture, vocal movement, and radial artery pulse, through straining the piezoelectric Se nanowires. Our results suggest the potential of solution-synthesized Se nanowire a new class of piezoelectric nanomaterial for self-powered biomedical devices and opens doors to new technologies in energy, electronics, and sensor applications.
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