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Jeong, Hu Young
UNIST Central Research Facilities (UCRF)
Research Interests
  • Soft material characterization such as graphene using a low kV Cs-corrected TEM
  • Insitu-TEM characterization of carbon-based materials using nanofactory STM holder for Li-ion battery application
  • Structural characterization of mesoporous materials using SEM & TEM
  • Interface analysis between various oxides and metals through Cs-corrected (S)TEM
  • Resistive switching mechanism of graphene oxide thin films for RRAM application

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Vertically Ordered Hematite Nanotube Array as an Ultrasensitive and Rapid Response Acetone Sensor

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Title
Vertically Ordered Hematite Nanotube Array as an Ultrasensitive and Rapid Response Acetone Sensor
Author
Kim, Do HongShim, Young-SeokJeon, Jong-MyeongJeong, Hu YoungPark, Sung SooKim, Young-WoonKim, Jin-SangLee, Jong-HeunJang, Ho Won
Issue Date
2014-08
Publisher
AMER CHEMICAL SOC
Citation
ACS APPLIED MATERIALS & INTERFACES, v.6, no.17, pp.14779 - 14784
Abstract
Vertically ordered nanotube array is a desirable configuration to improve gas sensing properties of the hematite which is the most abundant and cheapest metal oxide semiconductor on earth but has low and sluggish chemiresistive responses. We have synthesized a vertically aligned, highly ordered hematite nanotube array directly on a patterned SiO2/Si substrate and then it used as a gas sensor without additional processing. The nanotube array sensor shows unprecedentedly ultrahigh and selective responses to acetone with detection limits down to a few parts per billion and response time shorter than 3 s.
URI
https://scholarworks.unist.ac.kr/handle/201301/7352
DOI
10.1021/am504156w
ISSN
1944-8244
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