Publication:
Highly sensitive optical sensor for hydrogen gas based on a polymer microcylinder ring resonator

dc.contributor.coauthorEryürek, Mustafa
dc.contributor.departmentDepartment of Chemistry
dc.contributor.departmentDepartment of Electrical and Electronics Engineering
dc.contributor.departmentDepartment of Physics
dc.contributor.departmentGraduate School of Sciences and Engineering
dc.contributor.departmentKUTEM (Koç University Tüpraş Energy Center)
dc.contributor.kuauthorBalkan, Timuçin
dc.contributor.kuauthorBavili, Nima
dc.contributor.kuauthorKaya, Sarp
dc.contributor.kuauthorKiraz, Alper
dc.contributor.kuauthorMorova, Berna
dc.contributor.kuauthorUysallı, Yiğit
dc.contributor.schoolcollegeinstituteCollege of Engineering
dc.contributor.schoolcollegeinstituteCollege of Sciences
dc.contributor.schoolcollegeinstituteGRADUATE SCHOOL OF SCIENCES AND ENGINEERING
dc.contributor.schoolcollegeinstituteResearch Center
dc.date.accessioned2024-11-09T13:50:49Z
dc.date.issued2020
dc.description.abstractA highly sensitive platform is demonstrated for hydrogen gas (H-2) sensing based on a polymer microcylinder ring resonator (PMRR) obtained by an optical fiber coated with an inner nanofilm of amorphous palladium (Pd) and an outer polymer layer of polydimethylsiloxane (PDMS) permeable to H-2. The sensing scheme is based on monitoring the spectral shifts of high-quality optical resonances called whispering gallery modes (WGMs) that propagate in the vicinity of the outer rim of the PDMS layer without being affected by the absorption and scattering losses caused by the Pd nanofilm. WGMs are excited by a single-mode tapered optical fiber evanescently coupled to the PMRR. The observed reversible spectral shifts of the WGMs are induced by changes in the diameter of the PDMS layer caused by expansion or contraction of the Pd nanofilm exposed to varying concentrations of H-2. Maximum spectral shift sensitivity of 140 pm/% H-2, a minimum response time of 95 s, and minimum limit of detection of similar to 60 ppm were measured for sensors prepared with different thicknesses of the amorphous Pd nanofilm and tested in the H-2 concentration range up to 1%, having nitrogen gas (N-2) as a carrier. Experiments were also conducted with Pd nanofilms annealed in air or N-2 atmosphere after the deposition. In both cases, smaller sensitivities were observed due to the formation of larger grains within the film, resulting in slower diffusion and reduced solubility of H in the Pd layer. The impacts of oxygen gas and humidity on sensor performance were also studied.
dc.description.fulltextYES
dc.description.indexedbyWOS
dc.description.indexedbyScopus
dc.description.openaccessYES
dc.description.publisherscopeInternational
dc.description.sponsoredbyTubitakEuTÜBİTAK
dc.description.sponsorshipScientific and Technological Research Council of Turkey (TÜBİTAK)
dc.description.versionAuthor's final manuscript
dc.description.volume310
dc.identifier.doi10.1016/j.snb.2020.127806
dc.identifier.eissn0925-4005
dc.identifier.embargoNO
dc.identifier.filenameinventorynoIR02759
dc.identifier.issn0925-4005
dc.identifier.quartileN/A
dc.identifier.scopus2-s2.0-85079895809
dc.identifier.urihttps://hdl.handle.net/20.500.14288/3925
dc.identifier.wos519306300031
dc.keywordsHydrogen sensor
dc.keywordsMicroresonator
dc.keywordsRing resonator
dc.keywordsWhispering gallery mode
dc.keywordsPalladium
dc.keywordsPolydimethylsiloxane
dc.language.isoeng
dc.publisherElsevier
dc.relation.grantno115F446
dc.relation.ispartofSensors and Actuators B: Chemical
dc.relation.urihttp://cdm21054.contentdm.oclc.org/cdm/ref/collection/IR/id/9403
dc.subjectChemistry, analytical
dc.subjectElectrochemistry
dc.subjectInstruments and instrumentation
dc.titleHighly sensitive optical sensor for hydrogen gas based on a polymer microcylinder ring resonator
dc.typeJournal Article
dspace.entity.typePublication
local.contributor.kuauthorBavili, Nima
local.contributor.kuauthorBalkan, Timuçin
local.contributor.kuauthorMorova, Berna
local.contributor.kuauthorUysallı, Yiğit
local.contributor.kuauthorKaya, Sarp
local.contributor.kuauthorKiraz, Alper
local.publication.orgunit1GRADUATE SCHOOL OF SCIENCES AND ENGINEERING
local.publication.orgunit1College of Sciences
local.publication.orgunit1College of Engineering
local.publication.orgunit1Research Center
local.publication.orgunit2KUTEM (Koç University Tüpraş Energy Center)
local.publication.orgunit2Department of Physics
local.publication.orgunit2Department of Chemistry
local.publication.orgunit2Department of Electrical and Electronics Engineering
local.publication.orgunit2Graduate School of Sciences and Engineering
relation.isOrgUnitOfPublication035d8150-86c9-4107-af16-a6f0a4d538eb
relation.isOrgUnitOfPublication21598063-a7c5-420d-91ba-0cc9b2db0ea0
relation.isOrgUnitOfPublicationc43d21f0-ae67-4f18-a338-bcaedd4b72a4
relation.isOrgUnitOfPublication3fc31c89-e803-4eb1-af6b-6258bc42c3d8
relation.isOrgUnitOfPublication6ce65247-25c7-415b-a771-a9f0249b3a40
relation.isOrgUnitOfPublication.latestForDiscovery035d8150-86c9-4107-af16-a6f0a4d538eb
relation.isParentOrgUnitOfPublication8e756b23-2d4a-4ce8-b1b3-62c794a8c164
relation.isParentOrgUnitOfPublicationaf0395b0-7219-4165-a909-7016fa30932d
relation.isParentOrgUnitOfPublication434c9663-2b11-4e66-9399-c863e2ebae43
relation.isParentOrgUnitOfPublicationd437580f-9309-4ecb-864a-4af58309d287
relation.isParentOrgUnitOfPublication.latestForDiscovery8e756b23-2d4a-4ce8-b1b3-62c794a8c164

Files

Original bundle

Now showing 1 - 1 of 1
Thumbnail Image
Name:
9403.pdf
Size:
1.43 MB
Format:
Adobe Portable Document Format