DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kim, Dong Ha | ko |
dc.contributor.author | Kim, Sang-Joon | ko |
dc.contributor.author | Shin, Hamin | ko |
dc.contributor.author | Koo, Won-Tae | ko |
dc.contributor.author | Jang, Ji-Soo | ko |
dc.contributor.author | Kang, Joon-Young | ko |
dc.contributor.author | Jeong, Yong Jin | ko |
dc.contributor.author | Kim, Il-Doo | ko |
dc.date.accessioned | 2019-06-19T02:10:06Z | - |
dc.date.available | 2019-06-19T02:10:06Z | - |
dc.date.created | 2019-06-18 | - |
dc.date.issued | 2019-05 | - |
dc.identifier.citation | ACS NANO, v.13, no.5, pp.6071 - 6082 | - |
dc.identifier.issn | 1936-0851 | - |
dc.identifier.uri | http://hdl.handle.net/10203/262752 | - |
dc.description.abstract | We report a flexible hydrogen sensing platform based on a single-strand yarn consisting of high-density electrospun nanofibers, on which nanograined Pd or Pd@Pt is coated via yarn spinning followed by sputter deposition. In general, Pd undergoes a phase transition to PdHx (alpha-PdHx at [H-2] < 1% and beta-PdHx at [H-2] > 2%), in which H atoms act as electron scattering centers, thus increasing the resistance. In our system, the sensors exhibit switchable H-2 sensing behaviors, that is, (i) Delta R/R-0 > 0 at [H-2] > 1% by the active electron scattering and (ii) Delta R/R-0 < 0 at [H-2] < 1% derived from nanograined Pd effects. Due to high mechanical stability stemming from nanogranular morphologies of Pd, which is essential for enduring a huge volume expansion upon exposure to high-concentration H-2, we could obtain a wide concentration range (4-0.0001%) H-2 detection resolution. Moreover, an ultrathin Pt overlayer coated on Pd offers an accelerated H-2 detection capability based on effective gas dissociation and activation properties. Furthermore, by virtue of the core (thread)-shell (nanofiber yarn) scaffold, long cycling reliability and flexibility were achieved. This facile and low-cost yarn fabrication method offers the development of single-strand thread-type wearable chemiresistors that possess a high surface area and open porosity, facilitating gas diffusion and reaction. | - |
dc.language | English | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.title | High-Resolution, Fast, and Shape-Conformable Hydrogen Sensor Platform: Polymer Nanofiber Yarn Coupled with Nanograined Pd@Pt | - |
dc.type | Article | - |
dc.identifier.wosid | 000469886300114 | - |
dc.identifier.scopusid | 2-s2.0-85066858803 | - |
dc.type.rims | ART | - |
dc.citation.volume | 13 | - |
dc.citation.issue | 5 | - |
dc.citation.beginningpage | 6071 | - |
dc.citation.endingpage | 6082 | - |
dc.citation.publicationname | ACS NANO | - |
dc.identifier.doi | 10.1021/acsnano.9b02481 | - |
dc.contributor.localauthor | Kim, Il-Doo | - |
dc.contributor.nonIdAuthor | Kang, Joon-Young | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | nanofiber yarn | - |
dc.subject.keywordAuthor | sputter deposition | - |
dc.subject.keywordAuthor | nanograined palladium | - |
dc.subject.keywordAuthor | switchable sensing | - |
dc.subject.keywordAuthor | hydrogen | - |
dc.subject.keywordAuthor | wearable gas sensor | - |
dc.subject.keywordPlus | THIN-FILMS | - |
dc.subject.keywordPlus | PALLADIUM | - |
dc.subject.keywordPlus | NANOWIRES | - |
dc.subject.keywordPlus | NANOTUBES | - |
dc.subject.keywordPlus | SWITCHES | - |
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