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Au 플라워가 성장된 하이브리드형 탄소 나노튜브 마이크로 섬유 기반 유연한 고민감성 압력 센서 연구Highly Sensitive, Flexible Pressure Sensors Based on Carbon Nanotube Microfibers Hybridized with Au Flowers

Other Titles
Highly Sensitive, Flexible Pressure Sensors Based on Carbon Nanotube Microfibers Hybridized with Au Flowers
Authors
김소영김도환
Issue Date
Feb-2016
Publisher
한국섬유공학회
Keywords
electronic skin; CNT microfibers with Au flowers; pressure sensor; high sensitivity
Citation
한국섬유공학회지, v.53, no.1, pp.7 - 14
Journal Title
한국섬유공학회지
Volume
53
Number
1
Start Page
7
End Page
14
URI
http://scholarworks.bwise.kr/ssu/handle/2018.sw.ssu/7869
ISSN
1225-1089
Abstract
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.
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