A wet-chemistry-based hydrogel sensing platform for 2D imaging of pressure, chemicals and temperature

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Human skin can perceive pressure, chemical compounds and temperature with a high spatial resolution via specific receptors. Inspired by human skin, we present a wet-chemistry based hydrogel sensing platform for 2D imaging sensitive to specific external stimuli, e.g., pressure, chemicals and temperature. This platform is composed of a hydrogel pyramidal array on a single electrode. Each pyramid serves as a spatially separated reservoir for chemical reactions, enabling independent pixels for sensing without individual electrodes. Depending on the electrochemiluminescence (ECL) electrolyte for specific stimuli, our platform possesses 2D imaging capabilities with high sensitivity for pH and temperature in addition to pressure via the deformation of the viscoelastic hydrogel. This work represents an important step toward the application of sensitive chemical reactions for various external stimuli to biocompatible electronic skins based on hydrogels without addressing circuit for each pixel.
Publisher
ROYAL SOC CHEMISTRY
Issue Date
2018-07
Language
English
Article Type
Article
Keywords

ELECTRONIC SKIN; ELECTROGENERATED CHEMILUMINESCENCE; ARTIFICIAL SKIN; SENSOR ARRAY; TACTILE; TOUCH; SYSTEM; TEXTURE; DEVICES; DESIGN

Citation

NANOSCALE, v.10, no.28, pp.13581 - 13588

ISSN
2040-3364
DOI
10.1039/c8nr02080a
URI
http://hdl.handle.net/10203/244852
Appears in Collection
CH-Journal Papers(저널논문)
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