Prof. Alexey A. Basharin Profile

Prof. Alexey A. Basharin

Professor at National Univ of Science and Technology "MISiS"

SPIE Involvement:

Author | Student Chapter Advisor

Publications (5)

Proceedings Article | 18 April 2021 Presentation + Paper

All-dielectric ellipsoid for hybrid anapole observation

Anar Ospanova, Alexey Basharin, Andrey Miroshnichenko, Boris Luk'yanchuk

Proceedings Volume 11769, 117690R (2021) https://doi.org/10.1117/12.2588540

KEYWORDS: Particles, Magnetism, Scattering, Nanophotonics, Destructive interference

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Proceedings Article | 15 August 2017 Presentation

Planar toroidal metamaterials: the role of losses, tunability and applications (Conference Presentation)

Nikita Volsky, Vitaly Chuguevsky, Kristina Schegoleva, Alexey Basharin

Proceedings Volume 10227, 102270K (2017) https://doi.org/10.1117/12.2265856

KEYWORDS: Metamaterials, Magnetism, Electrodynamics

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Proceedings Article | 8 June 2017 Presentation

All-dielectric perforated metamaterials with toroidal dipolar response (Conference Presentation)

Ivan Stenishchev, Alexey Basharin

Proceedings Volume 10227, 102270L (2017) https://doi.org/10.1117/12.2265899

KEYWORDS: Metamaterials, Dielectrics, Molecular beam epitaxy, Silicon, Gallium arsenide, Ion beams, Laser cutting, Optical metamaterials, Prototyping, Sensors

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Proceedings Article | 8 June 2017 Presentation

Metamaterials with toroidal fano-response (Conference Presentation)

Maria Kozhokar, Alexey Basharin

Proceedings Volume 10227, 102270J (2017) https://doi.org/10.1117/12.2265820

KEYWORDS: Magnetism, Metamaterials, Optical activity, Microwave radiation, Dielectrics, Photonics, Current controlled current source

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The static toroidal dipole was predicted by Zeldovich, which appears due to the static currents in atomic nuclei and explain disturbance of parity in the weak interaction. Physically, toroidal dipole is separated element of multipole expansion that corresponds to electrical currents circulating on a surface of gedanken torus along its meridians. Recently, the demonstration of dynamic toroidal dipolar response became possible in metamaterials composed of metamolecules of toroidal topology. Metamaterials with toroidal dipolar response allow to demonstrate a number of special properties such as novel type of EIT, optical activity, extremely strongly localized fields and anapole. We are interested in another property of toroidal metamaterials – magnetic Fano-type response caused by toroidal and magnetic moments in a particular metamolecule. In this paper we demonstrate theoretically and experimentally in microwave at the first time Fano-excitation in toroidal metamaterials. We suggested metamaterials based on a special structure of two types of planar metamolecules separated by dielectric layer. One of them “Electric” type metamolecule is a planar conductive structure consisting of two symmetric split loops. The incident plane wave excites circular currents along the loops leading to a circulating magnetic moment and, as a result, to a toroidal moment. Moreover, due to the central gap electric moment can be excited in metamolecule. At the same time, destructive/constructive interference between toroidal and electric dipolar moments gives us unique effect as very strong E- field localization inside the central gap and anapole mode. “Magnetic” type metamolecule is the inverted and rotated variant of the first structure. In contrast to the first case, here we expect very strong localization of magnetic field instead electric field. The magnetic field lines are whirling around the central junction of the metamolecule due to interference between toroidal and magnetic quadrupole moment. Importantly, this configuration allows us to reduce electric moment. Hence, we observe very strong magnetic field localization. Combined together, they support coupled Fano- response with separated strongly concentrated electric and magnetic fields. We discuss this effect and show diamagnetic response due to toroidal Fano-excitation. These metamaterials are promising for magnetic photonics and as Huygens elements.

Proceedings Article | 26 July 2016 Presentation

Toroidal response due to strong near-field coupling in planar metamaterials (Conference Presentation)

Alexey Basharin, Vitaliy Chuguevskiy, Maria Kafesaki, Eleftherios Economou, Alexey Ustinov

Proceedings Volume 9883, 98831G (2016) https://doi.org/10.1117/12.2225880

KEYWORDS: Metamaterials, Near field, Super resolution, Negative refraction, Absorption, Nonlinear optics, Quantum communications, Quantum metamaterials, Magnetism, Resonators, Nanoantennas

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