Chip-less wireless electronic skins by remote epitaxial freestanding compound semiconductors

Recent advances in flexible and stretchable electronics have led to a surge of electronic skin (e-skin)-based health monitoring platforms. Conventional wireless e-skins rely on rigid integrated circuit chips that compromise the overall flexibility and consume considerable power. Chip-less wireless e...

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Published in:Science (American Association for the Advancement of Science) Vol. 377; no. 6608; p. 859
Main Authors: Kim, Yeongin, Suh, Jun Min, Shin, Jiho, Liu, Yunpeng, Yeon, Hanwool, Qiao, Kuan, Kum, Hyun S, Kim, Chansoo, Lee, Han Eol, Choi, Chanyeol, Kim, Hyunseok, Lee, Doyoon, Lee, Jaeyong, Kang, Ji-Hoon, Park, Bo-In, Kang, Sungsu, Kim, Jihoon, Kim, Sungkyu, Perozek, Joshua A, Wang, Kejia, Park, Yongmo, Kishen, Kumar, Kong, Lingping, Palacios, Tomás, Park, Jungwon, Park, Min-Chul, Kim, Hyung-Jun, Lee, Yun Seog, Lee, Kyusang, Bae, Sang-Hoon, Kong, Wei, Han, Jiyeon, Kim, Jeehwan
Format: Journal Article
Language:English
Published: United States 19.08.2022
Subjects:
Humans
Monitoring, Physiologic - instrumentation
Pulse
Remote Sensing Technology - instrumentation
Semiconductors
Sweat - chemistry
Wearable Electronic Devices
ISSN:1095-9203, 1095-9203
Online Access:Get more information
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Summary:Recent advances in flexible and stretchable electronics have led to a surge of electronic skin (e-skin)-based health monitoring platforms. Conventional wireless e-skins rely on rigid integrated circuit chips that compromise the overall flexibility and consume considerable power. Chip-less wireless e-skins based on inductor-capacitor resonators are limited to mechanical sensors with low sensitivities. We report a chip-less wireless e-skin based on surface acoustic wave sensors made of freestanding ultrathin single-crystalline piezoelectric gallium nitride membranes. Surface acoustic wave-based e-skin offers highly sensitive, low-power, and long-term sensing of strain, ultraviolet light, and ion concentrations in sweat. We demonstrate weeklong monitoring of pulse. These results present routes to inexpensive and versatile low-power, high-sensitivity platforms for wireless health monitoring devices.
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ISSN:1095-9203
1095-9203
DOI:10.1126/science.abn7325