91 citations · 318 across the 8 of their papers we have counts for
10 papers
Metasurface Modeling by a Thin Slab
Mojtaba Dehmollaian, Yousef Vahabzadeh, Karim Achouri +1
We investigate the possibility to model a metasurface, defined as a zero-thickness sheet of surface polarization currents, by a thin slab, characterized by a subwavelength thicknes…
On the Use of Electromagnetic Inversion for Metasurface Design
Trevor Brown, Chaitanya Narendra, Yousef Vahabzadeh +2
We show that the use of the electromagnetic inverse source framework offers great flexibility in the design of metasurfaces. In particular, this approach is advantageous for antenn…
Simultaneous Control of the Spatial and Temporal Spectra of Light with Space-Time Varying Metasurfaces
Nima Chamanara, Yousef Vahabzadeh, Christophe Caloz
This paper presents space-time varying (STV) metasurfaces for simultaneously controlling the spatial and temporal spectra of electromagnetic waves. These metasurfaces transform inc…
Computational Analysis of Metasurfaces
Yousef Vahabzadeh, Nima Chamanara, Karim Achouri +1
Metasurfaces represent one of the most vibrant fields of modern science and technology. A metasurface is a complex electromagnetic structure, that is typically deeply subwavelength…
Efficient GSTC-FDTD Simulation of Dispersive Bianisotropic Metasurface
Yousef Vahabzadeh, Nima Chamanara, Christophe Caloz
We present a simple and efficient Finite-Difference Time-Domain (FDFD) scheme for simulating dispersive (Lorentz-Debye) bianisotropic metasurfaces. This scheme replaces the convent…
Synthesis of Spherical Metasurfaces based on Susceptibility Tensor GSTCs
Xiao Jia, Yousef Vahabzadeh, Fan Yang +1
The bianisotropic susceptibility Generalized Sheet Transition Conditions (GSTCs) synthesis method is extended from planar to spherical metasurfaces. Properties specific to the non-…
Mathematical Synthesis and Analysis of Nonlinear Metasurfaces
Karim Achouri, Yousef Vahabzadeh, Christophe Caloz
We propose a discussion on the synthesis and scattering analysis of nonlinear metasurfaces. For simplicity, we investigate the case of a second-order nonlinear isotropic metasurfac…
Generalized Sheet Transition Condition FDTD Simulation of Metasurface
Yousef Vahabzadeh, Nima Chamanara, Christophe Caloz
We propose an FDTD scheme based on Generalized Sheet Transition Conditions (GSTCs) for the simulation of polychromatic, nonlinear and space-time varying metasurfaces. This scheme c…
Spacetime Processing Metasurfaces: GSTC Synthesis and Prospective Applications
Nima Chamanara, Yousef Vahabzadeh, Karim Achouri +1
The paper presents the general concept of spacetime processing metasurfaces, synthesized by generalized sheet transition conditions (GSTCs). It is shown that such metasurfaces can…
Simulation of Metasurfaces in Finite Difference Techniques
Yousef Vahabzadeh, Karim Achouri, Christophe Caloz
We introduce a rigorous and simple method for analyzing metasurfaces, modeled as zero-thickness electromagnetic sheets, in Finite Difference (FD) techniques. The method consists in…