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First Author:
Yunzhao Bai
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Correspondence Author:
YongAn Huang,Kan Li
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Co-author:
Liting Yin,Chao Hou,Yunlei Zhou,Fan Zhang,Zhangyu Xu
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Journal:
Advanced Functional Materials
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Volume:
33
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Issue:
31
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ISSN No.:
1616-301X
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DOI number:
10.1002/adfm.202214119
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Date of Publication:
2023-04-25
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Abstract:
Advances in fabric strain sensors have established a route to comfortable-to-wear flexible electronics with particularly remarkable permeability and low modulus due to their porous fabric microstructure. A key challenge that remains unsolved is to regulate the sensor response via on-demand design for a variety of application scenarios to sufficiently exploit the highest possible sensitivity. While recent reports have described a variety of options in varying the material and orientation of the overall fiber mat, the development of approaches where multiple sensors with different responses can be integrated on a single substrate without affecting macroscopic mechanical properties remains an area of continued interest. Herein, a simple mechanical strategy is reported, which plates the patterned functional material on the fabric mat at a pre-stretched state in the prescribed direction, and control of direction and prestrain forms either sensors with different responses or strain-insensitive interconnects. A systematic study has revealed the underlying mechanism of this strategy, which can serve as a guideline for the on-demand design and fabrication of fabric strain sensors. Demonstration applications in motion monitoring bandages and gesture recognition gloves illustrate capabilities in functional epidermal sensing devices.
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