Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 김명화 | * |
dc.date.accessioned | 2016-08-28T12:08:47Z | - |
dc.date.available | 2016-08-28T12:08:47Z | - |
dc.date.issued | 2012 | * |
dc.identifier.issn | 1932-7447 | * |
dc.identifier.other | OAK-8359 | * |
dc.identifier.uri | https://dspace.ewha.ac.kr/handle/2015.oak/222272 | - |
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 (VO 2) nanowire prepared by the efficient and size-controllable growth method originating from V 2O 5 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 °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 (∼35 °C), by reaching much faster (∼3×) 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 VO 2 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). © 2011 American Chemical Society. | * |
dc.language | English | * |
dc.title | Electrothermally induced highly responsive and highly selective vanadium oxide hydrogen sensor based on metal-insulator transition | * |
dc.type | Article | * |
dc.relation.issue | 1 | * |
dc.relation.volume | 116 | * |
dc.relation.index | SCI | * |
dc.relation.index | SCIE | * |
dc.relation.index | SCOPUS | * |
dc.relation.startpage | 226 | * |
dc.relation.lastpage | 230 | * |
dc.relation.journaltitle | Journal of Physical Chemistry C | * |
dc.identifier.doi | 10.1021/jp2080989 | * |
dc.identifier.wosid | WOS:000298978700027 | * |
dc.identifier.scopusid | 2-s2.0-84862916480 | * |
dc.author.google | Byon J.W. | * |
dc.author.google | Kim M.-B. | * |
dc.author.google | Kim M.H. | * |
dc.author.google | Kim S.Y. | * |
dc.author.google | Lee S.H. | * |
dc.author.google | Lee B.C. | * |
dc.author.google | Baik J.M. | * |
dc.contributor.scopusid | 김명화(57191596821) | * |
dc.date.modifydate | 20240130103418 | * |