Multifunctional and Ultrathin Electronic Tattoo for On-Skin Diagnostic and Therapeutic Applications
- Authors
- Gogurla, Narendar; Kim, Yisub; Cho, Suyoung; Kim, Jangsun; Kim, Sunghwan
- Issue Date
- Jun-2021
- Publisher
- WILEY-V C H VERLAG GMBH
- Keywords
- carbon nanotubes; electronic skin; epidermal electronics; silk proteins; smart tattoos
- Citation
- ADVANCED MATERIALS, v.33, no.24
- Indexed
- SCIE
SCOPUS
- Journal Title
- ADVANCED MATERIALS
- Volume
- 33
- Number
- 24
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/189221
- DOI
- 10.1002/adma.202008308
- ISSN
- 0935-9648
- Abstract
- Epidermal electronic systems for detecting electrophysiological signals, sensing, therapy, and drug delivery are at the frontier in man-machine interfacing for healthcare. However, it is still a challenge to develop multifunctional bioapplications with minimal invasiveness, biocompatibility, and stable electrical performance under various mechanical deformations of biological tissues. In this study, a natural silk protein with carbon nanotubes (CNTs) is utilized to realize an epidermal electronic tattoo (E-tattoo) system for multifunctional applications that address these challenging issues through dispersing highly conductive CNTs onto the biocompatible silk nanofibrous networks with porous nature to construct skin-adhesive ultrathin electronic patches. Individual components that incorporate electrically and optically active heaters, a temperature sensor (temperature coefficient of resistance of 5.2 x 10(-3) degrees C-1), a stimulator for drug delivery (>500 mu m penetration depth in skin), and real-time electrophysiological signal detectors are described. This strategy of E-tattoos integrated onto human skin can open a new route to a next-generation electronic platform for wearable and epidermal bioapplications.
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