On determining gas concentrations using dielectric thin-film helicoidal bianisotropic medium bilayers

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Abstract

Bilayers comprising two matched layers of dielectric thin-film helicoidal bianisotropic mediums (TFHBMs) with opposite structural handedness reflect arbitrarily polarized, normally incident, plane waves almost perfectly in a certain frequency range. As TFHBMs are porous, a model is devised to show that the infiltration of a TFHBM bilayer by a gas can shift as well as reduce the span of this range. Accordingly, a suitably designed TFHBM bilayer can serve as the active element of an optical device for sensing gas concentration.

Original languageEnglish (US)
Pages (from-to)243-250
Number of pages8
JournalSensors and Actuators, B: Chemical
Volume52 B52
Issue number3
StatePublished - Jan 1 1998

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry

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