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A Bioinspired Stretchable Sensory-Neuromorphic System

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Title
A Bioinspired Stretchable Sensory-Neuromorphic System
Author(s)
Kim, Sun Hong; Baek, Geun Woo; Yoon, Jiyong; Seo, Seunghwan; Park, Jinhong; Hahm, Donghyo; Chang, Jun Hyuk; Seong, Duhwan; Seo, Hyunseon; Oh, Seyong; Kim, Kyunghwan; Jung, Heeyoung; Oh, Youngsu; Baac, Hyoung Won; Alimkhanuly, Batyrbek; Bae, Wan Ki; Lee, Seunghyun; Lee, Minbaek; Kwak, Jeonghun; Park, Jin-Hong; Donghee Son
Publication Date
2021-11
Journal
Advanced Materials, v.33, no.44
Publisher
John Wiley and Sons Inc
Abstract
© 2021 Wiley-VCH GmbHConventional stretchable electronics that adopt a wavy design, a neutral mechanical plane, and conformal contact between abiotic and biotic interfaces have exhibited diverse skin-interfaced applications. Despite such remarkable progress, the evolution of intelligent skin prosthetics is challenged by the absence of the monolithic integration of neuromorphic constituents into individual sensing and actuating components. Herein, a bioinspired stretchable sensory-neuromorphic system, comprising an artificial mechanoreceptor, artificial synapse, and epidermal photonic actuator is demonstrated; these three biomimetic functionalities correspond to a stretchable capacitive pressure sensor, a resistive random-access memory, and a quantum dot light-emitting diode, respectively. This system features a rigid-island structure interconnected with a sinter-free printable conductor, which is optimized by controlling the evaporation rate of solvent (≈160% stretchability and ≈18 550 S cm−1 conductivity). Devised design improves both areal density and structural reliability while avoiding the thermal degradation of heat-sensitive stretchable electronic components. Moreover, even in the skin deformation range, the system accurately recognizes various patterned stimuli via an artificial neural network with training/inferencing functions. Therefore, the new bioinspired system is expected to be an important step toward implementing intelligent wearable electronics.
URI
https://pr.ibs.re.kr/handle/8788114/10652
DOI
10.1002/adma.202104690
ISSN
0935-9648
Appears in Collections:
Center for Neuroscience Imaging Research (뇌과학 이미징 연구단) > 1. Journal Papers (저널논문)
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