Tatjana Gric

Prof. Tatjana Gric

Vilnius Gediminas Technical University
orcid

Research Focus & Metrics

Academic Career Length

16Years (2011-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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9 May 2017 in Optics Express
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Tatjana GricTatjana Gric
Tatjana Gric
Ortwin HessOrtwin Hess
Ortwin Hess
Despite the fact that metal is the most common conducting constituent element in the fabrication of metamaterials, one of the advantages of graphene over metal is that its conductivity can be controlled by the Fermi energy. Here, we theoretically investigate multilayer structures comprising alternating graphene and dielectric layers as a class of hyperbolic metamaterials for THz frequencies based on a general simple model of the graphene and the dielectric layers. By employing a method of matching the tangential components of the electrical and magnetic fields, we derive the relevant dispersion relations and demonstrate that tuning can be achieved by modifying the Fermi energy. Moreover, tunability of the graphene-dielectric heterostructures can be enhanced further by changing either the thickness of the dielectric layers or the number of graphene sheets employed. Calculated dispersion relations, propagation lengths of plasmon modes in the system are presented. This allows us to characterize and categorize the modes into two groups: Ferrel-Berreman modes and surface plasmon polaritons.

1 January 2016 in Progress In Electromagnetics Research M
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Tatjana GricTatjana Gric
Tatjana Gric
The rigorous modeling and analysis of surface waves at the boundary of two metamaterials are presented. The nature of the phenomenon of the surface-plasmon-polaritons and the influence of various parameters on it are investigated. We have analyzed the properties of structures incorporating nanostructured metamaterials. Surface-plasmon-polaritons at the interface of such metamaterials are studied. We demonstrate the ways to control the properties of the surface waves. Each metamaterial comprises alternating metal and dielectric layers. We analyze the dependence of the dispersion characteristics on the materials employed in metal-dielectric compound. The consistency of the dispersion diagrams and effective permittivity is studied. The Drude model is introduced in the metal dispersion in order to take into account the effects of the structure on dielectric properties.

28 June 2018 in Journal of Infrared, Millimeter, and Terahertz Waves
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Tatjana GricTatjana Gric
Tatjana Gric
AGAndrei Gorodetsky
Andrei Gorodetsky
ATAleksej Trofimov
Aleksej Trofimov
EDIK RafailovEDIK Rafailov
EDIK Rafailov


29 November 2019 in Optical and Quantum Electronics
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TIThanos Ioannidis
Thanos Ioannidis
Tatjana GricTatjana Gric
Tatjana Gric
EDIK RafailovEDIK Rafailov
EDIK Rafailov

7 June 2019 in Optical and Quantum Electronics
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Journal Article
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Tatjana GricTatjana Gric
Tatjana Gric