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Crumpled Carbon Nanotube Thin Film Heaters for High Sensitivity Hydrogen Sensing

Title
Crumpled Carbon Nanotube Thin Film Heaters for High Sensitivity Hydrogen Sensing
Authors
Park, JeonhyeongJang, Il RyuKim, Hoe Joon
DGIST Authors
Kim, Hoe Joon
Issue Date
2019-10-27
Citation
18th IEEE Sensors, SENSORS 2019, 8956523
Type
Conference
ISBN
9781728116341
ISSN
1930-0395
Abstract
This paper reports the fabrication and characterization of crumpled multi-walled carbon nanotube (CNT) thin film heater and its application towards hydrogen gas sensing. We have fabricated MWCNTs thin film heater by a simple spray coating and thermally shrinking the polystyrene (PS) substrate. Thermal shrinkage results crumpled CNTs with closely packed junctions, leading to a higher heating temperature at a given input voltage. Such efficient heating capabilities of the crumpled CNT heater are favorable for hydrogen gas sensing with good desorption characteristics. Our results show that higher operating temperatures result in better measurement sensitivities. In addition, the heating performance and temperature coefficient of resistance (TCR) of CNT heaters are analyzed for an accurate temperature control. The suggested crumpled CNT heaters can be applied for low-voltage gas sensing platforms. © 2019 IEEE.
URI
http://hdl.handle.net/20.500.11750/11508
DOI
10.1109/SENSORS43011.2019.8956523
Publisher
Institute of Electrical and Electronics Engineers Inc.
Related Researcher
  • Author Kim, Hoe Joon Nano Materials and Devices Lab
  • Research Interests MEMS/NEMS; Micro/Nano Sensors; Piezoelectric Devices; Nanomaterials; Heat Transfer; Atomic Force Microscope
Files:
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Collection:
Department of Robotics EngineeringNano Materials and Devices Lab2. Conference Papers


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