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Self-Healable, Recyclable Anisotropic Conductive Films of Liquid Metal-Gelatin Hybrids for Soft Electronics

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Title
Self-Healable, Recyclable Anisotropic Conductive Films of Liquid Metal-Gelatin Hybrids for Soft Electronics
Author(s)
Young-Geun Park; Jiuk Jang; Hyobeom Kim; Jae Chul Hwang; Yong Won Kwon; Jang-Ung Park
Publication Date
2022-04
Journal
Advanced Electronic Materials, v.8, no.4
Publisher
John Wiley and Sons Inc
Abstract
© 2021 Wiley-VCH GmbHThis paper reports an unconventional approach for the formation of self-healable and recyclable anisotropic conductive films (ACFs) using soft composites of gelatin hydrogels and liquid metals (LMs). The capsules of LMs dispersed inside the gelatin matrix can present satisfactory anisotropic conductance for electrical connections of vertically aligned, fine electrodes at room temperature by applying compressive pressures. The minimization of the capsule size as well as the softness of these LM-gelatin hybrid ACFs enables high-resolution integrations of deformable electronic systems, which can increase the integrity of freeform devices. In addition, the good fluidity of LMs and strong hydrogen bonding in gelatin enable these ACFs to be self-healable at ambient conditions and even recyclable with no significant degradations in either their original electrical or mechanical properties. The utilization of these ACFs to integrate multiple interconnections of micro-light-emitting diode arrays on a soft elastomeric substrate demonstrates a stretchable display with its reliable operations during mechanical deformations, suggesting a promising strategy for next-generation freeform and eco-friendly green electronics.
URI
https://pr.ibs.re.kr/handle/8788114/11567
DOI
10.1002/aelm.202101034
ISSN
2199-160X
Appears in Collections:
Center for Nanomedicine (나노의학 연구단) > 1. Journal Papers (저널논문)
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