132 citations · 773 across the 48 of their papers we have counts for
11 papers · 1 filter
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…
The homogenization of orthorhombic piezoelectric composites by the strong-property-fluctuation theory
Andrew J. Duncan, Tom G. Mackay, Akhlesh Lakhtakia
The linear strong--property--fluctuation theory (SPFT) was developed in order to estimate the constitutive parameters of certain homogenized composite materials (HCMs) in the long-…
On the homogenization of orthotropic elastic composites by the strong-property-fluctuation theory
Andrew J. Duncan, Tom G. Mackay, Akhlesh Lakhtakia
The strong-property-fluctuation theory (SPFT) provides a general framework for estimating the constitutive parameters of a homogenized composite material (HCM). We developed the el…
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…
Terahertz Metamaterials with Semiconductor Split-Ring Resonators for Magnetostatic Tunability
Jiaguang Han, Akhlesh Lakhtakia, Cheng-Wei Qiu
We studied a metasurface constituted as a periodic array of semiconductor split-ring resonators. The resonance frequencies of the metasurface excited by normally incident light wer…
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…