Publication:
Hydrogen gas sensing using palladium-coated microdisk microresonators

dc.contributor.coauthorTaşaltın, Nevin
dc.contributor.departmentDepartment of Physics
dc.contributor.kuauthorEryürek, Mustafa
dc.contributor.kuauthorKaradağ, Yasin
dc.contributor.kuauthorKılınç, Necmettin
dc.contributor.kuauthorKiraz, Alper
dc.contributor.kuprofilePhD Student
dc.contributor.kuprofilePhD Student
dc.contributor.kuprofileFaculty Member
dc.contributor.yokidN/A
dc.contributor.yokidN/A
dc.contributor.yokidN/A
dc.contributor.yokid22542
dc.date.accessioned2024-11-09T12:02:20Z
dc.date.issued2015
dc.description.abstractAn SU-8 polymer microdisk resonator coated with a palladium (Pd) layer and coupled to a single-mode optical waveguide is used to as a hydrogen (H-2) gas sensor. In the presence of H2 a red shift is observed in the spectral positions of the microdisk whispering gallery modes (WGMs) due to the expansion in the Pd lattice. 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 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.
dc.description.fulltextYES
dc.description.indexedbyWoS
dc.description.indexedbyScopus
dc.description.openaccessYES
dc.description.publisherscopeInternational
dc.description.sponsoredbyTubitakEuN/A
dc.description.sponsorshipN/A
dc.description.versionPublisher version
dc.formatpdf
dc.identifier.doi10.1117/12.2078244
dc.identifier.embargoNO
dc.identifier.filenameinventorynoIR00515
dc.identifier.isbn978-1-62841-433-2
dc.identifier.issn0277-786X
dc.identifier.linkhttps://doi.org/10.1117/12.2078244
dc.identifier.quartileN/A
dc.identifier.scopus2-s2.0-84931305991
dc.identifier.urihttps://hdl.handle.net/20.500.14288/985
dc.identifier.wos353695900007
dc.keywordsApplied physics
dc.keywordsMicrodisk resonator
dc.keywordsSU-8 polymer
dc.keywordsHydrogen sensing
dc.keywordsWaveguide coupling
dc.languageEnglish
dc.publisherSociety of Photo-optical Instrumentation Engineers (SPIE)
dc.relation.urihttp://cdm21054.contentdm.oclc.org/cdm/ref/collection/IR/id/586
dc.sourceProceedings of SPIE
dc.subjectElectrical and electronic engineering
dc.subjectOptics
dc.titleHydrogen gas sensing using palladium-coated microdisk microresonators
dc.typeConference proceeding
dspace.entity.typePublication
local.contributor.authoridN/A
local.contributor.authoridN/A
local.contributor.authoridN/A
local.contributor.authorid0000-0001-7977-1286
local.contributor.kuauthorEryürek, Mustafa
local.contributor.kuauthorKaradağ, Yasin
local.contributor.kuauthorKılınç, Necmettin
local.contributor.kuauthorKiraz, Alper
local.publication.orgunit1Graduate School of Sciences and Engineering
local.publication.orgunit1College of Sciences
local.publication.orgunit2KUTEM (Koç University Tüpraş Energy Center)
local.publication.orgunit2Department of Physics
relation.isOrgUnitOfPublicationc43d21f0-ae67-4f18-a338-bcaedd4b72a4
relation.isOrgUnitOfPublication.latestForDiscoveryc43d21f0-ae67-4f18-a338-bcaedd4b72a4

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