Self-Powered Real-Time Arterial Pulse Monitoring Using Ultrathin Epidermal Piezoelectric Sensors

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Continuous monitoring of an arterial pulse using a pressure sensor attached on the epidermis is an important technology for detecting the early onset of cardiovascular disease and assessing personal health status. Conventional pulse sensors have the capability of detecting human biosignals, but have significant drawbacks of power consumption issues that limit sustainable operation of wearable medical devices. Here, a self-powered piezoelectric pulse sensor is demonstrated to enable in vivo measurement of radial/ carotid pulse signals in near-surface arteries. The inorganic piezoelectric sensor on an ultrathin plastic achieves conformal contact with the complex texture of the rugged skin, which allows to respond to the tiny pulse changes arising on the surface of epidermis. Experimental studies provide characteristics of the sensor with a sensitivity (approximate to 0.018 kPa(-1)), response time (approximate to 60 ms), and good mechanical stability. Wireless transmission of detected arterial pressure signals to a smart phone demonstrates the possibility of self-powered and real-time pulse monitoring system.
Publisher
WILEY-V C H VERLAG GMBH
Issue Date
2017-10
Language
English
Article Type
Article
Keywords

TRIBOELECTRIC NANOGENERATOR; THIN-FILMS; PRESSURE SENSORS; HIGH-RESOLUTION; STRAIN SENSOR; ELECTRONICS; ENERGY; ARRAY; PERFORMANCE; HEALTH

Citation

ADVANCED MATERIALS, v.29, no.37

ISSN
0935-9648
DOI
10.1002/adma.201702308
URI
http://hdl.handle.net/10203/226711
Appears in Collection
RIMS Journal PapersMS-Journal Papers(저널논문)
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