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Crumpled Carbon Nanotube Thin Film Heaters for High Sensitivity Hydrogen Sensing
- Crumpled Carbon Nanotube Thin Film Heaters for High Sensitivity Hydrogen Sensing
- Park, Jeonhyeong; Jang, Il Ryu; Kim, Hoe Joon
- DGIST Authors
- Kim, Hoe Joon
- Issue Date
- 18th IEEE Sensors, SENSORS 2019, 8956523
- 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.
- Institute of Electrical and Electronics Engineers Inc.
- Related Researcher
Kim, Hoe Joon
Nano Materials and Devices Lab
MEMS/NEMS; Micro/Nano Sensors; Piezoelectric Devices; Nanomaterials; Heat Transfer; Atomic Force Microscope
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- Department of Robotics EngineeringNano Materials and Devices Lab2. Conference Papers
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