15 citations · 37 across the 9 of their papers we have counts for
19 papers · 1 filter
Electromagnetic Theory of Metasurface Perfect Magnetic Conductor (PMC)
Oscar Céspedes Vicente, Karim Achouri, Christophe Caloz
Artificial magnetic conductors (AMCs) mimic the idealized boundary condition of a perfect magnetic conductor (PMC), which reflects electromagnetic waves with a preserved electric f…
Multipolar Angular Scattering of Substrated Metasurfaces
Hossein Allahverdizadeh, Karim Achouri
Properly modeling and predicting the scattering response of a metasurface is a particularly challenging task. This has been shown to be especially difficult if the metasurface supp…
A General Expression for Homogeneous Metasurface Scattering
Francisco S. Cuesta, Karim Achouri
The general approach in metasurface design is to find the unit-cell properties required to achieve a given functionality. This is usually done by modeling the metasurface as a comb…
Angle-Invariant Scattering in Metasurfaces
Mustafa Yücel, Francisco S. Cuesta, Karim Achouri
Metasurfaces are efficient and versatile electromagnetic structures that have already enabled the implementation of a wide range of microwave and photonic wave shaping applications…
Extension of Lorentz Reciprocity and Poynting Theorems for Spatially Dispersive Media with Quadrupolar Responses
Karim Achouri, Olivier J. F. Martin
We provide a self-consistent extension of the Lorentz reciprocity theorem and the Poynting theorem for media possessing electric and magnetic dipolar and quadrupolar responses rela…
Reciprocal Metasurfaces for On-axis Reflective Optical Computing
Ali Momeni, Hamid Rajabalipanah, Mahdi Rahmanzadeh +4
Analog computing has emerged as a promising candidate for real-time and parallel continuous data processing. This paper presents a reciprocal way for realizing asymmetric optical t…