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- University of WashingtonUS28 papers
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5 papers · 2 filters
On the inapplicability of a negative-phase-velocity condition as a negative-refraction condition for active materials
A. Lakhtakia, T. G. Mackay, J. B. Geddes
A negative-phase-velocity condition derived by Depine and Lakhtakia [Microwave Opt Technol Lett 41 (2004) 315] for isotropic, homogeneous, passive, dielectric-magnetic materials is…
Semiconductor split-ring resonators for thermally tunable, terahertz metamaterials
Jiaguang Han, Akhlesh Lakhtakia
As the variation of temperature alters the intrinsic carrier density in a semiconductor, numerical simulations indicate that the consequent variation of the relative permittivity i…
The Huygens principle for a uniaxial dielectric-magnetic medium with gyrotropic-like magnetoelectric properties
Tom G. Mackay, Akhlesh Lakhtakia
The dyadic Green functions for a uniaxial dielectric-magnetic medium, together with a reversible field transformation, were implemented to derive a formulation of the Huygens princ…
On widening the angular existence domain for Dyakonov surface waves using the Pockels effect
S. R. Nelatury, J. A. Polo, A. Lakhtakia
The propagation of Dyakonov surface waves (DSWs) at the planar interface between an isotropic material and a linear electro-optic birefringent material can be dynamically controlle…
Sculptured-thin-film plasmonic-polaritonics
A. Lakhtakia, J. A. Polo, M. A. Motyka
The solution of a boundary--value problem formulated for the Kretschmann configuration shows that the phase speed of a surface--plasmon--polariton (SPP) wave guided by the planar i…