Large-strain Soft Sensors Using Elastomers Blended with Exfoliated/Fragmented Graphite Particles

탄성중합체와 박리 후 파쇄된 흑연입자 복합재를 이용한 대변형률 연성 센서

  • 박성민 (인하대학교 기계공학과) ;
  • 남경목 (인하대학교 기계공학과) ;
  • 김종훈 (인하대학교 기계공학과) ;
  • 윤상희 (인하대학교 기계공학과)
  • Received : 2016.03.04
  • Accepted : 2016.06.29
  • Published : 2016.09.01


An elastic polymer (e.g., PDMS) blended with EFG particles is a promising conductive composite for fabricating soft sensors that can detect an object's deformation up to or more than 50%. Here, we develop large-strain, sprayable soft sensors using a mixture of PDMS and EFG particles, which are used as a host elastomer and electrically conductive particles, respectively. A solution for a conductive composite mixture is prepared by the microwave-assisted graphite exfoliation, followed by ultrasonication-induced fragmentation of the exfoliated graphite and ultrasonic blending of PDMS and EFG. Using the prepared solutions for composite and pure PDMS, 1-, 2-, and 3-axis soft sensors are fabricated by airbrush stencil technique where composite mixture and pure PDMS are materials for sensing and insulating layers, respectively. We characterize the soft strain sensors after investigating the effect of PDMS/EFG wt% on mechanical compliance and electrical conductance of the conductive composite.


Supported by : 한국연구재단


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