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Ultrasensitive chemiresistors based on electrospun TiO2 nanofibers
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kim, Il-Doo | - |
dc.contributor.author | Rothschild, Avner | - |
dc.contributor.author | Lee, Byong Hong | - |
dc.contributor.author | Kim, Dong Young | - |
dc.contributor.author | Jo, Seong Mu | - |
dc.contributor.author | Tuller, Harry L. | - |
dc.date.accessioned | 2009-11-05T22:26:37Z | - |
dc.date.available | 2009-11-05T22:26:37Z | - |
dc.date.issued | 2006 | - |
dc.identifier.citation | Nano Lett. 2006, 6, 2009 | en |
dc.identifier.issn | 1530-6984 (Print) | - |
dc.identifier.uri | http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&dopt=Citation&list_uids=16968017 | - |
dc.identifier.uri | https://hdl.handle.net/10371/11301 | - |
dc.description.abstract | Nanostructured semiconducting metal oxides and particularly single nanowire devices offer exceptional gas sensitivity but at the expense of statistical variations and excessive noise levels. In this study TiO2/poly(vinyl acetate) composite nanofiber mats were directly electrospun onto interdigitated Pt electrode arrays, hot pressed at 120 degrees C, and calcined at 450 degrees C. This resulted in a novel multiple nanowire network composed of sheaths of 200-500 nm diameter cores filled with readily gas accessible approximately 10 nm thick single-crystal anatase fibrils. TiO2 nanofiber sensors tested for NO2, in dry air, exhibited exceptional sensitivity showing with, for example, a 833% increase in sensor resistance when exposed to 500 ppb NO2 at 300 degrees C, consistent with a detection limit estimated to be well below 1 ppb. Unusual response patterns were observed at high NO2 concentrations (> 12.5 ppm), consistent with n to p inversion of the surface-trap limited conduction facilitated by the high surface-to-volume ratio of this material. | en |
dc.description.sponsorship | This work was partially supported by a KIST
independent project, and by the National Science Foundation under Contract ECS-0428696. | en |
dc.language.iso | en | - |
dc.publisher | American Chemical Society | en |
dc.subject | Crystallization/*methods | en |
dc.subject | Electric Impedance | en |
dc.subject | Electrochemistry/*instrumentation/methods | en |
dc.subject | Equipment Design | en |
dc.subject | Equipment Failure Analysis | en |
dc.subject | Materials Testing | en |
dc.subject | Nanotubes/*chemistry/ultrastructure | en |
dc.subject | Nitric Oxide/*analysis/*chemistry | en |
dc.subject | Rotation | en |
dc.subject | Titanium/*chemistry | en |
dc.subject | Transducers | - |
dc.title | Ultrasensitive chemiresistors based on electrospun TiO2 nanofibers | en |
dc.type | Article | en |
dc.contributor.AlternativeAuthor | 김일두 | - |
dc.contributor.AlternativeAuthor | 이병홍 | - |
dc.contributor.AlternativeAuthor | 김동영 | - |
dc.contributor.AlternativeAuthor | 조성무 | - |
dc.identifier.doi | 10.1021/nl061197h | - |
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