Publication

Invisibility Conditions in Metasurfaces and Their Relationships to Bound States in the Continuum

2025

Abstract

A metasurface is constituted of an array of scattering particles arranged within a two-dimensional lattice. By tuning the physical parameters of both the particles and the lattice, it is possible to engineer the electromagnetic response of the metasurface. In this work, we are specifically interested in modeling and controlling the angular scattering response of a metasurface illuminated by an obliquely impinging plane wave with arbitrary polarization.

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2025

Abstract

Official source

Related concepts (32)

Polarization (physics)

Polarization (also polarisation) is a property of transverse waves which specifies the geometrical orientation of the oscillations. In a transverse wave, the direction of the oscillation is perpendicular to the direction of motion of the wave. A simple example of a polarized transverse wave is vibrations traveling along a taut string (see image); for example, in a musical instrument like a guitar string. Depending on how the string is plucked, the vibrations can be in a vertical direction, horizontal direction, or at any angle perpendicular to the string.

Rayleigh scattering

Rayleigh scattering (ˈreɪli ), named after the 19th-century British physicist Lord Rayleigh (John William Strutt), is the predominantly elastic scattering of light or other electromagnetic radiation by particles much smaller than the wavelength of the radiation. For light frequencies well below the resonance frequency of the scattering particle (normal dispersion regime), the amount of scattering is inversely proportional to the fourth power of the wavelength. Rayleigh scattering results from the electric polarizability of the particles.

Light scattering by particles

Light scattering by particles is the process by which small particles (e.g. ice crystals, dust, atmospheric particulates, cosmic dust, and blood cells) scatter light causing optical phenomena such as the blue color of the sky, and halos. Maxwell's equations are the basis of theoretical and computational methods describing light scattering, but since exact solutions to Maxwell's equations are only known for selected particle geometries (such as spherical), light scattering by particles is a branch of computational electromagnetics dealing with electromagnetic radiation scattering and absorption by particles.

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Invisibility Conditions in Metasurfaces and Their Relationships to Bound States in the Continuum

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