0000000000520576

AUTHOR

Abbas Ghasempour Ardakani

showing 2 related works from this author

Nonlocal dispersion anomalies of Dyakonov-like surface waves at hyperbolic media interfaces

2016

Dyakonov-like surface waves (DSWs) propagating obliquely on an anisotropic nanostructure have been theoretically proved in a few cases including 2D photonic crystals and metal-insulator (MI) layered metamaterials. Up to now, the long-wavelength approximation has been employed in order to obtain effective parameters to be introduced in the Dyakonov equation, which is largely restricted to material inhomogeneities of a few nanometers when including metallic elements. Here, we explore DSWs propagating obliquely at the interface between an insulator and a hyperbolic metamaterial, the latter consisting of a 1D MI bandgap grating using realistic slab sizes. We found unexpected favorable condition…

NanostructureBand gapPhysics::Optics02 engineering and technologyGrating01 natural sciences010309 optics0103 physical sciencesElectrical and Electronic EngineeringAnisotropyPhotonic crystalElectromagnetic opticsÓpticaPhysicsCondensed matter physicsMetamaterial021001 nanoscience & nanotechnologyCondensed Matter PhysicsSurface wavesAtomic and Molecular Physics and OpticsFinite element methodElectronic Optical and Magnetic MaterialsClassical mechanicsHardware and ArchitectureSurface waveHyperbolic metamaterials0210 nano-technology
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Dyakonov-like surface waves in the THz regime

2016

Abstract Here we examine Dyakonov-like surface waves (DSWs) in the THz regime traveling along the plane interface between a non-conducting isotropic medium and a low-loss graphene-based uniaxial metamaterial with the optic axis (OA) oriented along with the interface. New insights concerning the propagation characteristics of DSWs are given by analyzing the dispersion relation in such configuration, that is evaluated using the effective medium theory. The range of angles with respect to the OA which is determined for the in-plane wave vector can be conveniently tuned with extremely flexibility in opposition with DSWs excited in natural anisotropic media. The properties discussed here are of …

Physicsbusiness.industryTerahertz radiationIsotropyMetamaterial02 engineering and technology021001 nanoscience & nanotechnologyCondensed Matter Physics01 natural sciencesAtomic and Molecular Physics and OpticsElectronic Optical and Magnetic Materials010309 opticsOptical axisOpticsHardware and ArchitectureSurface waveDispersion relation0103 physical sciencesWave vectorElectrical and Electronic Engineering0210 nano-technologyAnisotropybusinessPhotonics and Nanostructures - Fundamentals and Applications
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