355 citations · 2.8k across the 46 of their papers we have counts for
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Finite-Difference Time-Domain Simulation of Wave Transmission Through Space-Time-Varying Media
Sajjad Taravati, Ahmed A Kishk, George V Eleftheriades
A comprehensive study on the Finite Difference Time Domain (FDTD) numerical modelling of space- and time-varying media is presented. We investigate the dynamic behavior of oblique…
Approach to the Analysis and Synthesis of Cylindrical Metasurfaces with Non-circular Cross Sections Based on Conformal Transformations
Gengyu Xu, George V. Eleftheriades, Sean V. Hum
We present methods for analyzing and designing cylindrical electromagnetic metasurfaces with non-circular cross sections based on conformal transformations. It can be difficult to…
Experimental Verification of Reflectionless Wide-Angle Refraction via a Bianisotropic Huygens' Metasurface
Michael Chen, Elena Abdo-Sánchez, Ariel Epstein +1
We report the design, fabrication, and characterization of bianisotropic Huygens' metasurfaces (BHMSs) for refraction of normally incident beams towards 71.8 degrees. As previously…
Synthesis of passive lossless metasurfaces using auxiliary fields for reflectionless beam splitting and perfect reflection
Ariel Epstein, George V. Eleftheriades
We introduce a paradigm for accurate design of metasurfaces for intricate beam manipulation, implementing functionalities previously considered impossible to achieve with passive l…
Arbitrary power-conserving field transformations with passive lossless omega-type bianisotropic metasurfaces
Ariel Epstein, George V. Eleftheriades
We present a general theory for designing realistic omega-type bianisotropic metasurfaces (O-BMSs), unlocking their full potential for molding electromagnetic fields. These metasur…
Cavity-excited Huygens' metasurface antennas: near-unity aperture efficiency from arbitrarily-large apertures
Ariel Epstein, Joseph P. S. Wong, George V. Eleftheriades
One of the long-standing problems in antenna engineering is the realization of highly-directive beams using low-profile devices. In this paper we provide a solution to this problem…
Passive Lossless Huygens Metasurfaces for Conversion of Arbitrary Source Field to Directive Radiation
Ariel Epstein, George V. Eleftheriades
We present a semi-analytical formulation of the interaction between a given source field and a scalar Huygens metasurface (HMS), a recently introduced promising concept for wavefro…
Design of Tensor Impedance Transmitarrays For Polarization Control
Michael Selvanayagam, George V. Eleftheriades
Tensor impedance transmitarrays consist of layers of tensor impedance surfaces, separated by dielectric spacers. Because the surface impedance of each layer is a tensor, an arbitra…
Discontinuous Electromagnetic Fields Using Huygens Sources For Wavefront Manipulation
Michael Selvanayagam, George V. Eleftheriades
We introduce the idea of discontinuous electric and magnetic fields at a boundary to design and shape wavefronts in an arbitrary manner. To create this discontinuity in the field w…
Comment on 'Propagation and Negative Refraction,' IEEE Microwave Magazine, pp. 58-65, July/August 2012
George Eleftheriades, Andrea Alu
We discuss and clarify some misleading statements appeared in a recent article on negative refraction in metamaterials. In this comment, we straighten the physical meaning and unde…
Two-dimensional subwavelength focusing using a slotted meta-screen
Loïc Markley, George V. Eleftheriades
A transmission screen with subwavelength slots is described which can focus electromagnetic radiation to a two-dimensional subwavelength spot. Unlike negative-refractive-index focu…
A spatially shifted beam approach to subwavelength focusing
Loic Markley, Alex M. H. Wong, Yan Wang +1
Although negative-refractive-index metamaterials have successfully achieved subwavelength focusing, image resolution is limited by the presence of losses. In this Letter, a metal t…