Effects of Dissipation on Propagation of Surface Electromagnetic and Acoustic Waves

Effects of Dissipation on Propagation of Surface Electromagnetic and Acoustic Waves

Date: May 2012
Creator: Nagaraj, Nagaraj
Description: With the recent emergence of the field of metamaterials, the study of subwavelength propagation of plane waves and the dissipation of their energy either in the form of Joule losses in the case of electomagnetic waves or in the form of viscous dissipation in the case of acoustic waves in different interfaced media assumes great importance. with this motivation, I have worked on problems in two different areas, viz., plasmonics and surface acoustics. the first part (chapters 2 & 3) of the dissertation deals with the emerging field of plasmonics. Researchers have come up with various designs in an efort to fabricate efficient plasmonic waveguides capable of guiding plasmonic signals. However, the inherent dissipation in the form of Joule losses limits efficient usage of surface plasmon signal. a dielectric-metal-¬dielectric planar structure is one of the most practical plasmonic structures that can serve as an efficient waveguide to guide electromagnetic waves along the metal-dielectric boundary. I present here a theoretical study of propagation of surface plasmons along a symmetric dielectric-metal-dielectric structure and show how proper orientation of the optical axis of the anisotropic substrate enhances the propagation length. an equation for propagation length is derived in a wide range of frequencies. ...
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Guest Artist Recital: 2008-10-08 - The Mysore Brothers

Guest Artist Recital: 2008-10-08 - The Mysore Brothers

Access: Use of this item is restricted to the UNT Community.
Date: October 8, 2008
Creator: Mysore Nagaraj
Description: Guest artist recital presented at the UNT College of Music Recital Hall.
Contributing Partner: UNT Music Library
Long-range surface plasmons in dielectric-metal-dielectric structure with highly anisotropic substrates

Long-range surface plasmons in dielectric-metal-dielectric structure with highly anisotropic substrates

Date: February 22, 2010
Creator: Nagaraj & Krokhin, Arkadii A.
Description: This article discusses long-range surface plasmons in dielectric-metal-dielectric structure with highly anisotropic substrates.
Contributing Partner: UNT College of Arts and Sciences