538 citations
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5 papers · 2 filters
Simultaneous amplification and attenuation in isotropic chiral materials
Tom G. Mackay, Akhlesh Lakhtakia
The electromagnetic field phasors in an isotropic chiral material (ICM) are superpositions of two Beltrami fields of different handedness. Application of the Bruggeman homogenizati…
Gain and loss enhancement in active and passive particulate composite materials
Tom G. Mackay, Akhlesh Lakhtakia
Two active dielectric materials may be blended together to realize a homogenized composite material (HCM) which exhibits more gain than either component material. Likewise, two dis…
Dynamically controllable, homogeneous, anisotropic metamaterials with simultaneous attenuation and amplification
Tom G. Mackay, Akhlesh Lakhtakia
Anisotropic homogeneous metamaterials that are neither wholly dissipative nor wholly active at a specific frequency are permitted by classical electromagnetic theory. Well-establis…
Voigt-wave propagation in active materials
Tom G. Mackay, Akhlesh Lakhtakia
If a dissipative anisotropic dielectric material, characterized by the permittivity matrix , supports Voigt-wave propagation, then so too does the analogou…
Application of Bruggeman and Maxwell Garnett homogenization formalisms to random composite materials containing dimers
Tom G. Mackay, Akhlesh Lakhtakia
The homogenization of a composite material comprising three isotropic dielectric materials was investigated. The component materials were randomly distributed as spherical particle…