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Tytuł:
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An Elastic Autonomous Self-Healing Capacitive Sensor Based on a Dynamic Dual Crosslinked Chemical System.
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Autorzy:
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Zhang Q; Key Laboratory of High Performance Polymer Material and Technology of MOE, Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, P. R. China.; Department of Chemical Engineering, Stanford University, Stanford, CA, 94305, USA.
Niu S; Department of Chemical Engineering, Stanford University, Stanford, CA, 94305, USA.
Wang L; Key Laboratory of High Performance Polymer Material and Technology of MOE, Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, P. R. China.
Lopez J; Department of Chemical Engineering, Stanford University, Stanford, CA, 94305, USA.
Chen S; Department of Chemical Engineering, Stanford University, Stanford, CA, 94305, USA.
Cai Y; Key Laboratory of High Performance Polymer Material and Technology of MOE, Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, P. R. China.
Du R; Key Laboratory of High Performance Polymer Material and Technology of MOE, Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, P. R. China.
Liu Y; Department of Bioengineering, Stanford University, Stanford, CA, 94305, USA.
Lai JC; State Key Laboratory of Coordination Chemistry, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, P. R. China.
Liu L; Institute of Theoretical and Computational Chemistry, Key Laboratory of Mesoscopic Chemistry of the Ministry of Education (MOE), Nanjing University, Nanjing, 210093, P. R. China.
Li CH; State Key Laboratory of Coordination Chemistry, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, P. R. China.
Yan X; Department of Chemical Engineering, Stanford University, Stanford, CA, 94305, USA.
Liu C; Institute of Theoretical and Computational Chemistry, Key Laboratory of Mesoscopic Chemistry of the Ministry of Education (MOE), Nanjing University, Nanjing, 210093, P. R. China.
Tok JB; Department of Chemical Engineering, Stanford University, Stanford, CA, 94305, USA.
Jia X; Key Laboratory of High Performance Polymer Material and Technology of MOE, Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, P. R. China.; State Key Laboratory of Coordination Chemistry, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, P. R. China.
Bao Z; Department of Chemical Engineering, Stanford University, Stanford, CA, 94305, USA.
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Źródło:
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Advanced materials (Deerfield Beach, Fla.) [Adv Mater] 2018 Jul 05, pp. e1801435. Date of Electronic Publication: 2018 Jul 05.
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Publication Model:
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Ahead of Print
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Typ publikacji:
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Journal Article
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Język:
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English
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Imprint Name(s):
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Publication: Sept. 3, 1997- : Weinheim : Wiley-VCH
Original Publication: Deerfield Beach, FL : VCH Publishers, 1989-
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Contributed Indexing:
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Keywords: capacitive sensors; dual interaction; elastomers; self-healing
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Entry Date(s):
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Date Created: 20180707 Latest Revision: 20240227
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Update Code:
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20240227
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DOI:
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10.1002/adma.201801435
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PMID:
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29978512
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Adopting self-healing, robust, and stretchable materials is a promising method to enable next-generation wearable electronic devices, touch screens, and soft robotics. Both elasticity and self-healing are important qualities for substrate materials as they comprise the majority of device components. However, most autonomous self-healing materials reported to date have poor elastic properties, i.e., they possess only modest mechanical strength and recoverability. Here, a substrate material designed is reported based on a combination of dynamic metal-coordinated bonds (β-diketone-europium interaction) and hydrogen bonds together in a multiphase separated network. Importantly, this material is able to undergo self-healing and exhibits excellent elasticity. The polymer network forms a microphase-separated structure and exhibits a high stress at break (≈1.8 MPa) and high fracture strain (≈900%). Additionally, it is observed that the substrate can achieve up to 98% self-healing efficiency after 48 h at 25 °C, without the need of any external stimuli. A stretchable and self-healable dielectric layer is fabricated with a dual-dynamic bonding polymer system and self-healable conductive layers are created using polymer as a matrix for a silver composite. These materials are employed to prepare capacitive sensors to demonstrate a stretchable and self-healable touch pad.
(© 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.)
