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Flat Silk Cocoon-Based Wearable Flexible Piezoresistive Sensor and its Performance
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  • Zulan Liu,
  • Mengyao Cai,
  • Rui Jia,
  • Xiang Xu,
  • Mengting Xu,
  • Guotao Cheng,
  • Lang Cheng,
  • Fangyin Dai
Zulan Liu
Southwest University College of Sericulture Textile and Biomass Sciences
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Mengyao Cai
Southwest University College of Sericulture Textile and Biomass Sciences
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Rui Jia
Southwest University College of Sericulture Textile and Biomass Sciences
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Xiang Xu
Southwest University College of Sericulture Textile and Biomass Sciences
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Mengting Xu
Southwest University College of Sericulture Textile and Biomass Sciences
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Guotao Cheng
Southwest University College of Sericulture Textile and Biomass Sciences
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Lang Cheng
Southwest University College of Sericulture Textile and Biomass Sciences
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Fangyin Dai
Southwest University College of Sericulture Textile and Biomass Sciences

Corresponding Author:[email protected]

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Abstract

Flexible sensors is becoming the focus of research due to its very vital for intelligent products, real-time data monitoring and recording. The flat silk cocoon (FSC), as a special form of cocoon, has all the advantages of silk, which is an excellent biomass carbon-based material and a good choice for preparing flexible sensors. In this work, a flexible piezoresistive sensor was successfully prepared by encapsulating the carbonized flat silk cocoons (CFSC) using an elastic matrix polydimethylsiloxane (PDMS). The sensing performance of the material is -0.01 kPa-1. And the monitoring range can reach 680.57 kPa. It is proved that the sensor can detect human motion and has excellent durability (>2000 cycles). In addition, the sensor array for keyboard based on CFSC was explored. The sensor has low production cost, simple preparation process, sustainable and environmentally friendly, which might be expected to have potential applications in wearable devices and human computer interaction.