1 Ocak 2015 Dergi makalesi Açık Erişim

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

Citation Style Language JSON

{
  "DOI": "10.1016/j.snb.2015.01.097", 
  "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.", 
  "author": [
    {
      "family": "Eryurek", 
      "given": " Mustafa"
    }, 
    {
      "family": "Karadag", 
      "given": " Yasin"
    }, 
    {
      "family": "Tasaltin", 
      "given": " Nevin"
    }, 
    {
      "family": "Kilinc", 
      "given": " Necmettin"
    }, 
    {
      "family": "Kiraz", 
      "given": " Alper"
    }
  ], 
  "container_title": "SENSORS AND ACTUATORS B-CHEMICAL", 
  "id": "90763", 
  "issued": {
    "date-parts": [
      [
        2015, 
        1, 
        1
      ]
    ]
  }, 
  "page": "78-83", 
  "title": "Optical sensor for hydrogen gas based on a palladium-coated polymer microresonator", 
  "type": "article-journal", 
  "volume": "212"
}