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dc.contributor.authorPak, Yusin-
dc.contributor.authorJeong, Yeonggyo-
dc.contributor.authorAlaal, Naresh-
dc.contributor.authorKim, Hyeonghun-
dc.contributor.authorChae, Jeonghoon-
dc.contributor.authorMin, Jung-Wook-
dc.contributor.authorDevi, Assa Aravindh Sasikala-
dc.contributor.authorMitra, Somak-
dc.contributor.authorLee, Da Hoon-
dc.contributor.authorKumaresan, Yogeenth-
dc.contributor.authorPark, Woojin-
dc.contributor.authorKim, Tae-Wook-
dc.contributor.authorRoqan, Iman S.-
dc.contributor.authorJung, Gun-Young-
dc.date.accessioned2024-01-19T21:00:34Z-
dc.date.available2024-01-19T21:00:34Z-
dc.date.created2022-01-25-
dc.date.issued2019-02-
dc.identifier.issn2196-7350-
dc.identifier.urihttps://pubs.kist.re.kr/handle/201004/120383-
dc.description.abstractPalladium (Pd) nanogap hydrogen gas (H-2) sensors based on the large volume expansion of beta phase palladium hydride (beta-PdH) are highly promising, owing to their fast and accurate sensing capability at room temperature in air. However, such sensors do not work well at H-2 concentrations below 1%. At such low H-2 concentrations, Pd exists as alpha-PdH, which has a slow and insufficient volume expansion and cannot completely close nanogaps. Furthermore, the lattice strains induced from the phase transition (alpha-PdH -> beta-PdH) behavior degrade the stable and repeatable long-term sensing capability. Here, these issues are resolved by fabricating an array of periodically aligned alloyed palladium-gold nanoribbons (PdAu NRB) with uniform 15 nm nanogaps. The PdAu NRB sensor enables highly stable and ultrafast H-2 sensing at the full detection range of H-2 concentrations from 0.005% to 10% along with the excellent limit of detection (approximate to 0.0027%), which is sufficiently maintained even after seven months of storage in ambient atmosphere. These breakthrough results will pave the way for developing a practical high-performance H-2 sensor chip in the future hydrogen era.-
dc.languageEnglish-
dc.publisherWILEY-
dc.titleHighly Stable and Ultrafast Hydrogen Gas Sensor Based on 15 nm Nanogaps Switching in a Palladium-Gold Nanoribbons Array-
dc.typeArticle-
dc.identifier.doi10.1002/admi.201801442-
dc.description.journalClass1-
dc.identifier.bibliographicCitationADVANCED MATERIALS INTERFACES, v.6, no.4-
dc.citation.titleADVANCED MATERIALS INTERFACES-
dc.citation.volume6-
dc.citation.number4-
dc.description.isOpenAccessN-
dc.description.journalRegisteredClassscie-
dc.description.journalRegisteredClassscopus-
dc.identifier.wosid000459485500009-
dc.identifier.scopusid2-s2.0-85059147618-
dc.relation.journalWebOfScienceCategoryChemistry, Multidisciplinary-
dc.relation.journalWebOfScienceCategoryMaterials Science, Multidisciplinary-
dc.relation.journalResearchAreaChemistry-
dc.relation.journalResearchAreaMaterials Science-
dc.type.docTypeArticle-
dc.subject.keywordPlusSELF-ASSEMBLED MONOLAYER-
dc.subject.keywordPlusELECTRICAL-RESISTANCE-
dc.subject.keywordPlusH-2 SENSORS-
dc.subject.keywordPlusTHIN-FILMS-
dc.subject.keywordPlusSNO2-
dc.subject.keywordPlusPD-
dc.subject.keywordPlusNANOSTRUCTURES-
dc.subject.keywordPlusTRANSITION-
dc.subject.keywordPlusDYNAMICS-
dc.subject.keywordAuthorhydrogen gas sensors-
dc.subject.keywordAuthornanoribbon-
dc.subject.keywordAuthorpalladium nanogap-
dc.subject.keywordAuthorpolystyrene thermal shrinkage-
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KIST Article > 2019
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