Mesostructured and mesoporous metal oxide films for optical waveguide-based gas sensor application

Zhi Mei Qi, Hao Shen Zhou, Itaru Homma

Research output: Contribution to conferencePaperpeer-review

2 Citations (Scopus)


Glass planar optical waveguide with the top layer of mesostructured or mesoporous metal oxide films such as TiO2, SnO2, ZnO 2, ZrO2, WO3, Al2O3, Ta2O5 and Nb2O5 was proposed for chemical, biological and gas sensor applications. To demonstrate the application feasibility of such a composite waveguide structure, a slide glass substrate containing a tin-diffused layer was dip-coated with a mesostructured hybrid film of peroxopolytungstic acid and block copolymer template. On the basis of the polarimetric interference, the resulting waveguide has been demonstrated to have a high sensitivity to ammonia in air at room temperature.

Original languageEnglish
Number of pages4
Publication statusPublished - 2004 Dec 1
Externally publishedYes
EventIEEE Sensors 2004 - Vienna, Austria
Duration: 2004 Oct 242004 Oct 27


OtherIEEE Sensors 2004


  • Composite waveguide
  • Gas sensor
  • Mesoporous
  • Mesostructured
  • Metal-oxide film

ASJC Scopus subject areas

  • Engineering (miscellaneous)
  • Electrical and Electronic Engineering


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