Journal
MATERIALS
Volume 10, Issue 9, Pages -Publisher
MDPI
DOI: 10.3390/ma10091068
Keywords
graphene; flexible textile; pressure sensor; foot plantar; gait analysis
Categories
Funding
- National Natural Science Foundation of China [61673158, 11304103, 61473112]
- Funds for Distinguished Young Scientists of Hebei Province [F2016201186]
- Grants of the Natural Science Foundation of Hebei Province [F2015201112]
- Colleges and Universities in Hebei Province Science and Technology Research Point Project [ZD2015067, QN2015135]
- Top Young and Middle-aged Innovative Talents of science and technology research project in Hebei province [BJ2016005]
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In the present study, we propose and develop a flexible pressure sensor based on the piezoresistive effect of multilayer graphene films on polyester textile. The pressure response results from the deformation of graphene conductive network structure and the changes in resistance. Here, we show that the graphene pressure sensor can achieve a sensitivity value of 0.012 kPa(-1), the measurement range can be as high as 800 kPa, and the response time can reach to 50 ms. Subsequently, a stable in-shoe wireless plantar pressure measurement system is developed and dynamic pressure distribution is acquired in real-time. Overall, the graphene textile pressure sensor has the advantage of wide dynamic range, flexibility and comfort, which provides the high possibility for footwear evaluation, clinical gait analysis and pathological foot diagnosis.
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