IDR @ IIT Bhubaneswar
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Item Surface plasmon resonance-based gas sensor with chalcogenide glass and bimetallic alloy nanoparticle layer(2009) Sharma A.K.; Jha R.A theoretical model for a gas sensor based on chalcogenide prism and surface plasmon resonance is proposed. The metal layer consists of Ag-Au alloy nanoparticles. The chalcogenide prism is made of sulfide glass Ge20 Ga5Sb10S65Item On the modal characteristics of surface plasmon polaritons at a metal-Bragg interface at optical frequencies(2009) Das R.; Jha R.Adetailed mathematical analysis along with a theoretical model for the modessupported at the interface of a metal and periodically stratified medium (Bragg structure) is presented. The modes that are supported at the interface of a plasmon active metal (such as gold) and a Bragg structure are commonly known as surface plasmon-Bragg modes. We found that these modes have effective indices lower than any of the material indices of the layers comprising the Bragg structure