A sunlight self-healable transparent strain sensor with high sensitivity and durability based on a silver nanowire/polyurethane composite film

In this work, a novel material design is proposed and implemented for developing a high performance resistive-type strain sensor. Accordingly, an electrically conductive composite film of polyurethane/silver nanowires is prepared. Owing to the synergistic effects of the transparent and sunlight self...

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Bibliographic Details
Published in:Journal of materials chemistry. A, Materials for energy and sustainability Materials for energy and sustainability, 2019, Vol.7 (5), p.2315-2325
Main Authors: Song, Yi Xi, Xu, Wei Min, Rong, Min Zhi, Zhang, Ming Qiu
Format: Article
Language:English
Subjects:
Conduction
Cyclic loads
Diffraction patterns
Durability
Electrical conductivity
Electrical resistivity
Electron diffraction
Interlayers
Materials fatigue
Nanotechnology
Nanowires
Polyurethane
Polyurethane resins
Robust control
Sandwich structures
Sensitivity
Sunlight
Synergistic effect
Tensile stress
Transparency
Visible spectrum
Welding
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Summary:In this work, a novel material design is proposed and implemented for developing a high performance resistive-type strain sensor. Accordingly, an electrically conductive composite film of polyurethane/silver nanowires is prepared. Owing to the synergistic effects of the transparent and sunlight self-healable polyurethane matrix, low-density and thin network of welded long silver nanowires, spray-coating, and sandwich structure consisting of two polyurethane layers and a silver nanowire network interlayer, the key factors that control the robustness and responsivity of the conduction paths while contradicting each other, are united, and the long-term cyclic loading induced failure can be self-repaired under sunshine. As a result, the composite successfully integrates high transparency, sensitivity, durability, self-healability and flexibility together, exhibiting promising application potential. A strain sensor based on a silver nanowire/polyurethane composite film has successfully integrated high transparency, sensitivity, durability, sunlight self-healability and flexibility together.
ISSN:2050-7488
2050-7496
DOI:10.1039/c8ta11435h