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Elastic Nanoparticle-Reinforced, Conductive Structural Color Hydrogel with Super Stretchable, Self-Adhesion, Self-Healing as Electrical/Optical Dual-responsive Visual Electronic Skins
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  • Min Xu,
  • Junlong Liao,
  • Jiajia Li,
  • Yu Shi,
  • Ziyu Zhang,
  • Yifu Fu,
  • Zhongze Gu,
  • Hua Xu
Min Xu
Southeast University
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Junlong Liao
Southeast University
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Jiajia Li
Southeast University
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Yu Shi
Southeast University
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Ziyu Zhang
Southeast University
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Yifu Fu
Southeast University
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Zhongze Gu
Southeast University
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Hua Xu
Southeast University

Corresponding Author:[email protected]

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Abstract

Developing smart hydrogel with excellent physicochemical properties and multiple signal output capability for interactively electronic skin still remains challenging. Here, a conductive structural color hydrogels with desirable physicochemical properties (including high stretchability and robustness, self-adhesion and self-healing) was developed to provide synchronous electronic and visual color signals for e-skins. Highly charged elastic nanoparticles were elaborately used as building units for structural color and the hydrogel were prepared by the self-assembly of the nanoparticle to form a non-close-packed array in a mixture comprised of acrylamide, SF, rGO and then photopolymerization. Benefiting from the improved interfacial compatibility between flexible hydrogel network and elastic nanoparticle, covalent cross-linking network structure and synergistic multiple non-covalent bonding interactions, the hydrogel exhibits extraordinary mechanical properties, excellent self-adhesion to diverse substrate and self-healing at room temperature. In addition, the hydrogel also exhibited sensitive resistance changes and synchronous structural color changes under strain. As a proof-to-concept, the hydrogel displayed superior capability for real-time color-sensing and electrical signal monitoring of various human motions, the spatial distribution of external mechanical stimuli as well as identification of different external stimuli, indicating promising applications in the fields of interactively visual electronic skin, wearable devices, and human-machine interfaces.
01 Nov 2023Submitted to Exploration
07 Nov 2023Submission Checks Completed
07 Nov 2023Assigned to Editor
05 Mar 20241st Revision Received
08 Mar 2024Submission Checks Completed
08 Mar 2024Assigned to Editor
23 Mar 2024Review(s) Completed, Editorial Evaluation Pending
23 Apr 2024Editorial Decision: Revise Minor
28 Apr 20242nd Revision Received
28 Apr 2024Submission Checks Completed
28 Apr 2024Assigned to Editor
16 May 2024Review(s) Completed, Editorial Evaluation Pending
24 Jun 2024Editorial Decision: Accept