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Tyrosine‐Rich Peptide Insulator for Rapidly Dissolving Transient Electronics
Author(s) -
Namgung Seok Daniel,
Song MinKyu,
Sung Taehoon,
Cho Ouk Hyun,
Ju Misong,
Kim Hyeohn,
Lee YoonSik,
Nam Ki Tae,
Kwon JangYeon
Publication year - 2020
Publication title -
advanced materials technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.184
H-Index - 42
ISSN - 2365-709X
DOI - 10.1002/admt.202000516
Subject(s) - materials science , dissolution , electronics , thin film transistor , insulator (electricity) , nanotechnology , optoelectronics , transistor , electrical engineering , chemical engineering , layer (electronics) , voltage , engineering
Transient electronics is a good platform for human implantable biomedical devices for diagnosing diseases and delivering therapeutic materials because additional surgery is not required to retrieve the device. Surrounding bio‐fluids inevitably dissolve device components, and the remaining electronic debris can trigger hazardous inflammation reactions within human body. Therefore, it is important to reduce the total dissolution time of devices even after they stop working. Thus, fast‐dissolving tyrosine‐based peptides are suggested as an insulator instead of SiO 2 , which has been used as a dissolution retarder in transient electronics. By combining a peptide insulator, zinc oxide semiconductor, and tungsten conductor, a biocompatible and biodegradable thin film transistor is fabricated. The device exhibits moderate performance (ON/OFF >10 3 and field‐effect mobility of ≈0.6 cm 2 V −1 s −1 ) and is fast‐dissolving (<3 h) in bio‐fluids.