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4 papers · 2 filters
A Plethora of Negative-Refraction Phenomenons in Relativistic and Non-Relativistic Scenarios
Tom G. Mackay, Akhlesh Lakhtakia
In accordance with Snel's law of refraction, whether a plane wave is refracted in the negative sense or positive sense at a planar boundary between two homogenous mediums is determ…
Ray trajectories for a spinning cosmic string and a manifestation of self-cloaking
Tom H. Anderson, Tom G. Mackay, Akhlesh Lakhtakia
A study of ray trajectories was undertaken for the Tamm medium which represents the spacetime of a cosmic spinning string, under the geometric-optics approximation. Our numerical s…
A lossless metamaterial with tunable permittivity and its application as a compact phase shifter
Yong Zeng, Qi Wu, Douglas H. Werner
In this Letter, we propose a new type of lossless metamaterial whose effective permittivity is tunable from negative to positive values. Its optical response is studied analyticall…
Modeling chiral sculptured thin films as platforms for surface-plasmonic-polaritonic optical sensing
Tom G. Mackay, Akhlesh Lakhtakia
Biomimetic nanoengineered metamaterials called chiral sculptured thin films (CSTFs) are attractive platforms for optical sensing because their porosity, morphology and optical prop…