Total Absorption of Electromagnetic Waves in Ultimately Thin Layers

By Y. Ra'di, Victor Asadchy, S. Tretyakov. IEEE Transactions on Antennas and Propagation, 2012

146 citations recorded by the source corpus.

We consider single-layer arrays of electrically small lossy particles that completely absorb electromagnetic waves at normal incidence. Required conditions for electromagnetic properties of bi-anisotropic particles have been identified in the most general case of uniaxial reciprocal and nonreciprocal particles. We consider the design possibilities offered by the particles of all four fundamental classes of bi-anisotropic inclusions: reciprocal chiral and omega particles and nonreciprocal Tellegen and moving particles. We also study the reflection/transmission properties of asymmetric structures with different properties when illuminated from the opposite sides of the sheet. It has been found that it is possible to realize single-layer grids which exhibit the total absorption property when illuminated from one side but are totally transparent when illuminated from the other side (an ultimately thin isolator). Other possible properties are co-polarized or twist polarized reflection from the side opposite to the absorbing one. Finally, we discuss possible approaches to practical realization of particles with the properties required for single-layer perfect absorbers and other proposed devices.

Subfields: Aerospace Engineering, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials

View Paper: https://www.semanticscholar.org/paper/bc5bac9d2b2d2ee3fc6e3888e8b52e43dc4cc027

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In Aerospace Engineering

In Atomic and Molecular Physics, and Optics

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Citations in the corpus

Perfect control of reflection and refraction using spatially dispersive metasurfaces (2016, methodology): “One can note a similarity of the conditions on the polarizabilities (69)–(74) with those used earlier for realizing polarization transformers [59] and absorbers [31,60].”
General Metasurface Synthesis Based on Susceptibility Tensors (2014, background): “For instance, one may mention metasurfaces providin g tunable reflection and transmission coefficients [9], plane wave refraction [10], single-layer perfect absorption [11], po larization twisting [12], and vortex wave generation [13], and man y more metasurface structures and applications are expec”
Susceptibility Derivation and Experimental Demonstration of Refracting Metasurfaces Without Spurious Diffraction (2018, background): “They have already led to a diversity of applications, including single-layer perfect absorption [4], polarization twisting [5], power harvesting [6], orbital angular momentum multiplexing [7], [8], spatial processing [9], and flat lensing [10], and there seems to be much more to be discovered and de”