Three-Dimensional Force Sensing Device Using Carbon Nanofiber Polymer Composites: Design and Fabrication

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概要

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• We propose an innovative three-dimensional force sensing device fabricated with carbon nanofiber (CNF) polymer composites. The device has four piezoresistive strain sensors made onto a polyimide substrate using surface patterning treatment and tilted-drop process with CNF polymer solutions. The proposed design and fabrication process is simpler than that of other three-dimensional force sensors and the device is suitable for mass production. The fabricated strain sensor properties using CNF polymer solutions with different composition ratios were investigated. An equation was derived using simple percolation theory to predict the conductivity of CNF polymer composites. The measured gauge factors were in the 4.84 to 17.68 range for CNF polymer composites with CNF 8.85--45.2 wt %. A programmable system on chip (PSoC) with built-in operational (OP) amplifier, analog-to-digital (AD) converter and multiplexer was used to develop a scanning and analyzing circuit for the three-dimensional force sensing device. The proposed integrated system was successfully applied to control a computer screen cursor.

• 2012-06-25

著者

• CHEN Chia-Ming

  Department of Chemical Engineering & Materials Science, Yuan-Ze University

• Lin Yu-hsien

  Department Of Electronics Engineering National Chiao Tung University

• Chen Tse-Min

  Department of Mechanical Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan

• Chang Fuh-Yu

  Department of Mechanical Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan

• Liu Chia-Ming

  Nanotechnology Research Center, Industrial Technology Research Institute, Hsinchu 31040, Taiwan

• Huang Shu-Jiuan

  Material and Chemical Lab, Industrial Technology Research Institute, Hsinchu 31040, Taiwan

• Chen Chia-Ming

  Department of Mechanical Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan

• Chang Fuh-Yu

  Department of Mechanical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan

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