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Baik, Jeong Min
Nano Energy and Environmental Materials Lab
Research Interests
  • Nanogenerators, antimicrobial material, catalysis, smart sensors


Electrothermally Induced Highly Responsive and Highly Selective Vanadium Oxide Hydrogen Sensor Based on Metal-Insulator Transition

DC Field Value Language Byon, Ji Won ko Kim, Min-Bin ko Kim, Myung Hwa ko Kim, Sung Youb ko Lee, Sang Hyun ko Lee, Byung Cheol ko Baik, Jeong Min ko 2014-04-10T01:28:07Z - 2013-06-12 ko 2012-01 -
dc.identifier.citation JOURNAL OF PHYSICAL CHEMISTRY C, v.116, no.1, pp.226 - 230 ko
dc.identifier.issn 1932-7447 ko
dc.identifier.uri -
dc.identifier.uri ko
dc.description.abstract We report highly effective hydrogen gas detection based on the metal insulator transition (MIT) by the electrothermally induced Pd-nanoparticles-decorated vanadium oxide (VO2) nanowire prepared by the efficient and size-controllable growth method originating from V2O5 thin film driven by supercooled liquid nanodroplets. By irradiating a well-defined electron beam into the nanowires, we could significantly increase the conductivity up to four times with only a modest change in the semiconductor-to-metal transition temperature (<2 degrees C). When exposed to trace amounts of hydrogen gas in a single nanowire configuration, the enhanced conductivity gave rise to about a two times as fast transition to metallic phase even near room temperature (similar to 35 degrees C), by reaching much faster (similar to 3x) a critical current density at which the self-heating initiates. Consequently, we achieved the greatly shorter response time as well as lower operating temperature and voltage for the detection of hydrogen gas in a single VO2 nanowire device, which can be attributed to the self-heating effect accelerated by the increase in the conductivity. The single nanowire sensor also shows the capability of detecting selectively hydrogen of different three gases (O-2, CO, and ethylene). ko
dc.description.statementofresponsibility close -
dc.language ENG ko
dc.publisher AMER CHEMICAL SOC ko
dc.subject Enhanced conductivity ko
dc.subject Fast transition ko
dc.subject Growth method ko
dc.subject Hydrogen gas ko
dc.subject Hydrogen gas detection ko
dc.subject Hydrogen sensor ko
dc.subject Metallic phase ko
dc.subject Nanowire devices ko
dc.subject Near room temperature ko
dc.subject Operating temperature ko
dc.subject Self-heating ko
dc.subject Self-heating effect ko
dc.subject Semiconductor-to-metal transitions ko
dc.subject Single nanowires ko
dc.subject Supercooled liquids ko
dc.subject Trace amounts ko
dc.subject Vanadium oxides ko
dc.title Electrothermally Induced Highly Responsive and Highly Selective Vanadium Oxide Hydrogen Sensor Based on Metal-Insulator Transition ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-84862916480 ko
dc.identifier.wosid 000298978700027 ko
dc.type.rims ART ko
dc.description.wostc 8 *
dc.description.scopustc 10 * 2015-02-28 * 2014-08-25 *
dc.identifier.doi 10.1021/jp2080989 ko
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