Optical sensor for hydrogen gas based on a palladium-coated polymer microresonator

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dc.authorid0000-0001-7977-1286
dc.authorid0000-0001-7977-1286
dc.authorid0000-0002-5818-9737
dc.authorid0000-0003-2123-2938
dc.authorid0000-0001-6788-1605
dc.contributor.authorEryurek, Mustafa
dc.contributor.authorKaradag, Yasin
dc.contributor.authorTasaltin, Nevin
dc.contributor.authorKilinc, Necmettin
dc.contributor.authorKiraz, Alper
dc.date.accessioned2019-08-01T13:38:39Z
dc.date.available2019-08-01T13:38:39Z
dc.date.issued2015
dc.departmentNiğde ÖHÜ
dc.description.abstractWe report an integrated optical sensor of hydrogen (H-2) gas employing an SU-8 polymer microdisk resonator coated with a palladium (Pd) layer and coupled to a single-mode optical waveguide. The sensing mechanism relies on the expansion in the Pd lattice due to palladium hydride formation in the presence of H-2. Strain induced in the microresonator then causes a red shift of the spectral positions of the resonator whispering gallery modes (WGMs) which is monitored using a tunable laser coupled to the waveguide. H-2 concentrations below the flammable limit (4%) down to 0.3% could be detected in nitrogen atmosphere at room temperature. For H-2 concentrations between 0.3 and 1%, WGM spectral positions shifted linearly with H-2 concentration at a rate of 32 pm/% H-2. Average response time of the devices was measured to be 50 s for 1% H-2. The proposed device concept can also be used to detect different chemical gases by using appropriate sensing layers. (C) 2015 Elsevier B.V. All rights reserved.
dc.description.sponsorshipTUBITAK [110T803]
dc.description.sponsorshipWe acknowledge financial support from TUBITAK (grantno. 110T803). We thank Alexandr Jonas for proofreading the manuscript and Suman Anand for fruitful discussions.
dc.identifier.doi10.1016/j.snb.2015.01.097
dc.identifier.endpage83
dc.identifier.issn0925-4005
dc.identifier.scopus2-s2.0-84923250396
dc.identifier.scopusqualityQ1
dc.identifier.startpage78
dc.identifier.urihttps://dx.doi.org/10.1016/j.snb.2015.01.097
dc.identifier.urihttps://hdl.handle.net/11480/3933
dc.identifier.volume212
dc.identifier.wosWOS:000351017700011
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthor[0-Belirlenecek]
dc.language.isoen
dc.publisherELSEVIER SCIENCE SA
dc.relation.ispartofSENSORS AND ACTUATORS B-CHEMICAL
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectHydrogen sensor
dc.subjectWhispering gallery mode
dc.subjectMicrodisk
dc.subjectSU-8
dc.subjectPalladium
dc.titleOptical sensor for hydrogen gas based on a palladium-coated polymer microresonator
dc.typeArticle

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