Browsing by Author "Osgouei, Ataollah Kalantari"
Now showing items 1-12 of 12
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Correction to: Active tuning from narrowband to broadband absorbers using a sub-wavelength VO2 embedded layer
(Springer, 2021-02-04)Metamaterial perfect absorbers (MPAs) with dynamic thermal tuning features are able to control the absorption performance of the resonances, providing diverse applications spanning from optical switches and filters to ... -
Diode like high-contrast asymmetric transmission of linearly polarized waves based on plasmon-tunneling effect coupling to electromagnetic radiation modes
(Institute of Physics Publishing Ltd., 2021-06-25)We present a narrow-band optical diode with a high-contrast forward-to-backward ratio at the near-infrared region. The design has a forward transmission of approximately $88\% $, and a backward one of less than $3\% $, ... -
Highly one-way electromagnetic wave transmission based on outcoupling of surface plasmon polaritons to radiation modes
(Institute of Electrical and Electronics Engineers, 2022-09-21)Unidirectional transmission of electromagnetic waves has attracted great interest due to its wide modern optical applications. This study theoretically demonstrates a one-way transmissive optical device with a ... -
Hybrid indium tin oxide-Au metamaterial as a multiband bi-functional light absorber in the visible and near-infrared ranges
(2021-04-23)Metamaterial nearly perfect light absorbers (MPAs) with dual-narrowband functionality—that absorb light in two narrowband adjacent wavelength regions—have attracted considerable attention due to their intriguing applications, ... -
Multi-band light-matter interaction in hBN-based metasurface absorber
(Institute of Electrical and Electronics Engineers, 2022-09-28)This paper presents a multi-band metamaterial-based absorber using phononic two-dimensional (2D) material. The structure consists of a top hexagonal boron nitride (hBN) layer on an aluminum nanograting structure deposited ... -
Plasmonic metamaterial based structures for designing of multiband and thermally tunable light absorbers, multiple thermal infrared emitter, and high-contrast asymmetric transmission optical diode
(Bilkent University, 2021-07)Metamaterials with sub-wavelength nanostructures refer to a class of synthetic materials that possess exotic electromagnetic properties which cannot be observed with natural materials. Negative refractive index, asymmetric ... -
Polarization insensitive phase change material-based nanoantenna array for thermally tunable infrared applications
(Institute of Electrical and Electronics Engineers, 2022-09-21)Thermal radiation management is an emerging application of metamaterials owing to their exotic electromagnetic radiative properties. Herein, a thermally tunable phase change material-based nanoantenna array is reported to ... -
A spectrally selective gap surface-plasmon-based nanoantenna emitter compatible with multiple thermal infrared applications
(Institute of Physics Publishing Ltd., 2021-08-20)Wavelength-selective nanoantenna emitters have attracted considerable attention due to their widespread applications ranging from thermal radiation management to thermophotovoltaics. In this paper, we design a wavelength-selective ... -
A Transmissive all-dielectric metasurface-based nanoantenna array for selectively manipulation of thermal radiation
(Institute of Electrical and Electronics Engineers, 2022-09-21)In this study, a wavelength-selective thermal nanoantenna emitter based on metamaterial design with heat radiation signature management and radiative cooling property is proposed. The design can be considered as a ... -
A Transparent all-dielectric multifunctional Nanoantenna emitter compatible with thermal infrared and cooling scenarios
(IEEE, 2021-06-30)In modern thermal infrared applications, multi-spectral camouflage scenarios should be developed to mitigate the thermal signature of an object. In general, camouflage needs to be satisfied in two main optical ranges: ... -
Visible light metasurface for adaptive photodetection
(Institute of Physics Publishing Ltd., 2022-10-05)Semiconductor-based sub-wavelength metasurfaces are promising device platforms for the realization of optically thick and electrically thin photodetectors. Strong light–matter interactions in ultrathin film regions provide ... -
A wavelength-selective multilayer absorber for heat signature control
(Institute of Electrical and Electronics Engineers, 2022-09-28)Engineering the thermal radiation using wavelength-selective thermal emitters is of great importance in the field of thermophotovoltaics, radiative cooling, and heat signature control. In this paper, a wavelength-selective ...
