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Biomimicking Stretchable Organic Electrochemical Transistor
Author(s) -
Li Yuanzhe,
Wang Naixiang,
Yang Anneng,
Ling Haifeng,
Yan Feng
Publication year - 2019
Publication title -
advanced electronic materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.25
H-Index - 56
ISSN - 2199-160X
DOI - 10.1002/aelm.201900566
Subject(s) - materials science , polydimethylsiloxane , stretchable electronics , nanotechnology , electrode , transistor , optoelectronics , fabrication , electrical conductor , electronics , thin film transistor , bending , conductive polymer , polymer , composite material , electrical engineering , voltage , chemistry , layer (electronics) , engineering , medicine , alternative medicine , pathology
Stretchable organic electrochemical transistors (OECTs) can find applications in wearable electronics for biosensing. However, the existing fabrication methods are either inconvenient or expensive. Here, a novel method to fabricate stretchable OECTs based on biomimicking polydimethylsiloxane substrates is reported. The substrate pattern is transferred from the bract of Bougainvillea glabra , demonstrating a 2D wavy structure. To further enhance the stretchability of the Au electrodes of the devices on the wavy surface, a highly conductive polymer film is coated on the Au surface by inkjet printing to bridge disconnected parts separated by cracks. The obtained OECTs demonstrate omnidirectional stretchability up to 30% and a bending radius down to 15 mm with stable performance. Stretchable glucose sensors with a detection limit around 1 µ m are developed based on the biomimicking stretchable OECTs, which are sensitive enough for detecting glucose levels in body fluids.