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Issue 28, 2018
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A wet-chemistry-based hydrogel sensing platform for 2D imaging of pressure, chemicals and temperature

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Abstract

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.

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

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Publication details

The article was received on 13 Mar 2018, accepted on 12 Jun 2018 and first published on 14 Jun 2018


Article type: Paper
DOI: 10.1039/C8NR02080A
Citation: Nanoscale, 2018,10, 13581-13588
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    A wet-chemistry-based hydrogel sensing platform for 2D imaging of pressure, chemicals and temperature

    C. Yun, S. Hwang and J. Kwak, Nanoscale, 2018, 10, 13581
    DOI: 10.1039/C8NR02080A

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