Journal of Drive and Control (드라이브 ㆍ 컨트롤)

The Korean Society for Fluid Power and Construction Equipment (유공압건설기계학회)
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A Study on Piezoresistive Characteristics of Smart Nano Composites based on Carbon Nanotubes for a Novel Pressure Sensor

압력센서 개발을 위한 탄소 나노 튜브 기반 지능형 복합소재 전왜 특성 연구

  • Kim, Sung Yong (Department of Mechanical Design & Engineering, Pukyong National University) ;
  • Kim, Hyun Ho (Department of Mechanical Design & Engineering, Pukyong National University) ;
  • Choi, Baek Gyu (Department of Mechanical Design & Engineering, Pukyong National University) ;
  • Kang, In Hyuk (Department of Mechanical Design & Engineering, Pukyong National University) ;
  • Lee, Ill Yeong (Department of Mechanical Design & Engineering, Pukyong National University) ;
  • Kang, In Pil (Department of Mechanical Design & Engineering, Pukyong National University)
  • Received : 2016.01.15
  • Accepted : 2016.02.26
  • Published : 2016.03.01
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Abstract

This paper presents a preliminary study on the pressure sensing characteristics of smart nano composites made of MWCNT (multi-walled carbon nanotube) to develop a novel pressure sensor. We fabricated the composite pressure sensor by using a solution casting process. Made of carbon smart nano composites, the sensor works by means of piezoresistivity under pressure. We built a signal processing system similar to a conventional strain gage system. The sensor voltage outputs during the experiment for the pressure sensor and the resistance changes of the MWCNT as well as the epoxy based on the smart nano composite under static pressure were fairly stable and showed quite consistent responses under lab level tests. We confirmed that the response time characteristics of MWCNT nano composites with epoxy were faster than the MWCNT/EPDM sensor under static loads.

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Acknowledgement

Supported by : 부경대학교

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