1 Ocak 2015 Dergi makalesi Açık Erişim

Eryurek, Mustafa; Karadag, Yasin; Tasaltin, Nevin; Kilinc, Necmettin; Kiraz, Alper

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  <identifier identifierType="URL">https://aperta.ulakbim.gov.tr/record/90763</identifier>
  <creators>
    <creator>
      <creatorName>Eryurek, Mustafa</creatorName>
      <givenName>Mustafa</givenName>
      <familyName>Eryurek</familyName>
      <affiliation>Koc Univ, Dept Phys, TR-34450 Istanbul, Turkey</affiliation>
    </creator>
    <creator>
      <creatorName>Karadag, Yasin</creatorName>
      <givenName>Yasin</givenName>
      <familyName>Karadag</familyName>
      <affiliation>Marmara Univ, Dept Phys, TR-34722 Istanbul, Turkey</affiliation>
    </creator>
    <creator>
      <creatorName>Tasaltin, Nevin</creatorName>
      <givenName>Nevin</givenName>
      <familyName>Tasaltin</familyName>
      <affiliation>TUBITAK MRC Mat Inst, Sensor Mat Photon Technol Lab, TR-41470 Gebze, Kocaeli, Turkey</affiliation>
    </creator>
    <creator>
      <creatorName>Kilinc, Necmettin</creatorName>
      <givenName>Necmettin</givenName>
      <familyName>Kilinc</familyName>
      <affiliation>Nigde Univ, Mechatron Engn Dept, TR-51245 Nigde, Turkey</affiliation>
    </creator>
    <creator>
      <creatorName>Kiraz, Alper</creatorName>
      <givenName>Alper</givenName>
      <familyName>Kiraz</familyName>
    </creator>
  </creators>
  <titles>
    <title>Optical Sensor For Hydrogen Gas Based On A Palladium-Coated Polymer Microresonator</title>
  </titles>
  <publisher>Aperta</publisher>
  <publicationYear>2015</publicationYear>
  <dates>
    <date dateType="Issued">2015-01-01</date>
  </dates>
  <resourceType resourceTypeGeneral="Text">Journal article</resourceType>
  <alternateIdentifiers>
    <alternateIdentifier alternateIdentifierType="url">https://aperta.ulakbim.gov.tr/record/90763</alternateIdentifier>
  </alternateIdentifiers>
  <relatedIdentifiers>
    <relatedIdentifier relatedIdentifierType="DOI" relationType="IsIdenticalTo">10.1016/j.snb.2015.01.097</relatedIdentifier>
  </relatedIdentifiers>
  <rightsList>
    <rights rightsURI="http://www.opendefinition.org/licenses/cc-by">Creative Commons Attribution</rights>
    <rights rightsURI="info:eu-repo/semantics/openAccess">Open Access</rights>
  </rightsList>
  <descriptions>
    <description descriptionType="Abstract">We 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.</description>
  </descriptions>
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