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Stress Dissipation Encoded Silk Fibroin Electrode for the Athlete-Beneficial Silk Bioelectronics

Authors
WOOJIN CHOIDeokjae HeoTAEHO KIMSUNGWONJUNGMOONHYUN CHOIJIWOONG HEOJaeSung KwonBYEONG-SU KIMWonhwa LeeWon-Gun KohJeong Ho ChoSangmin LeeJINKEE HONG
Issue Date
Mar-2022
Publisher
Wiley-vch Verlag GmbH &Co
Keywords
amino acid engineering; energy harvesting technology; intrinsic crosslink; mechanical property; silk fibroin
Citation
Advanced Science, v.9, no.8, pp.2105420-1 - 2105420-14
Journal Title
Advanced Science
Volume
9
Number
8
Start Page
2105420-1
End Page
2105420-14
URI
https://yscholarhub.yonsei.ac.kr/handle/2021.sw.yonsei/6291
DOI
10.1002/advs.202105420
ISSN
2198-3844
Abstract
The kinetic body motions have guided the core-shell fabrics of wearable bioelectronics to be elastoplastic. However, the polymeric electrodes follow the trade-off relationship between toughness and stretchability. To this end, the stress dissipation encoded silk fibroin electrode is proposed as the core electrode of wearable bioelectronics. Significantly, the high degree of intrinsic stress dissipation is realized via an amino acid crosslink. The canonical phenolic amino acid (i.e., tyrosine) of silk fibroin is engineered to bridge the secondary structures. A sufficient crosslink network is constructed when tyrosine is exposed near the amorphous strand. The stress dissipative tyrosine crosslink affords 12.5-fold increments of toughness (4.72 to 58.9 MJ m?3) and implements the elastoplastic silk fibroin. The harmony of elastoplastic core electrodes with shell fabrics enables the wearable bioelectronics to employ mechanical performance (elastoplasticity of 750 MJ m?3) and stable electrical response. The proposed wearable is capable of assisting the effective workouts via triboelectricity. In principle, active mobility with suggested wearables potentially relieves muscular fatigues and severe injuries during daily fitness.
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College of Engineering > Chemical Engineering > 1. Journal Articles
치과대학 > 치과대학 치과생체재료공학교실 > 1. Journal Articles
College of Science > 이과대학 화학 > 1. Journal Articles

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