DOI QR코드

DOI QR Code

Au 플라워가 성장된 하이브리드형 탄소 나노튜브 마이크로 섬유 기반 유연한 고민감성 압력 센서 연구

김소영;김도환
Kim, So Young;Kim, Do Hwan

  • 투고 : 2015.12.18
  • 심사 : 2016.02.12
  • 발행 : 2016.02.29

초록

Pressure-sensitive electronic skin (e-skin) has gained importance in the fields of prosthetics, health monitoring, sensitive tactile information display, and robotics. In particular, many previous studies have reported flexible and highly sensitive pressure sensors. Among them, e-skin devices based on CNT microfibers show wearable and excellent multimodal (pressure, temperature, humidity, and presence of chemicals) sensing capabilities However, the low sensitivity of these devices at high pressures remains a critical issue. Here, we report on highly flexbile and sensitive e-skin devices prepared by carbon nanotube (CNT) microfibers hybridized with Au flowers, which were synthesized by electrochemical methods. First, we controlled the voltage and reaction time in order to optimize the surface morphology of the CNT microfibers. Next, we fabricated capacitive pressure sensors to elucidate the impact of Au flowers on the sensing capability of the CNT microfiber-based pressure sensors, especially in high pressure regimes. The sensors based on CNT microfibers with Au flowers showed fourfold higher sensitivity than did those without the Au flowers, due to the enhanced air traps between the Au flowers. Furthermore, this morphology of CNT microfibers with Au flowers demonstrated satisfactory repeatability and durability under high pressure.

키워드

electronic skin;CNT microfibers with Au flowers;pressure sensor;high sensitivity

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과제정보

연구 과제 주관 기관 : National Research Foundation of Korea