2019 International Conference on Electromagnetics in Advanced Applications (ICEAA)
In this paper, we present a new kind of nanoantennas for effective illumination of parabolic surf... more In this paper, we present a new kind of nanoantennas for effective illumination of parabolic surfaces, consisting of a dielectric hollow cylinder as a reflector and a dipole source as an emitter. Precisely chosen parameters of the nanoantenna design provides radiation pattern with broad main lobe and strongly suppressed side lobes. According to the simulation results, such pattern is quite similar to the ideal “$\Pi$” configuration, necessary for efficient illuminating reflectors as shown in Figure 1.
2018 International Conference on Electromagnetics in Advanced Applications (ICEAA), 2018
In this paper we present new metamaterial based on dielectric slab with perforated holes. In this... more In this paper we present new metamaterial based on dielectric slab with perforated holes. In this structure, electric and toroidal dipoles states anapole mode (antiphase oscilation) in the optical frequency range. Our metamaterial has great potential for various kinds of optical devices due to the simplicity of fabrication at the nanoscale regime.
2019 International Conference on Electromagnetics in Advanced Applications (ICEAA), 2019
Here we propose new kind silicon metamaterial that possesses anapole mode in optical range. The d... more Here we propose new kind silicon metamaterial that possesses anapole mode in optical range. The design can be implemented by the use of hole perforation that considerably reduces fabrication challenges and silicon materials possess low dissipative losses. Simulation results show full transmission of metamaterial in visible range.
2018 International Conference on Electromagnetics in Advanced Applications (ICEAA), 2018
This work dedicated to novel cloaking technique, based on the multipolar dipole interaction. Thus... more This work dedicated to novel cloaking technique, based on the multipolar dipole interaction. Thus, destructive interface between electric and toroidal dipole moments, known as anapole mode, underpins the cloaking effect in THz range and anticipated to find applications in nanophotonics and plasmonics.
2021 International Conference on Electromagnetics in Advanced Applications (ICEAA), 2021
In this paper, we propose new kind nonradiating state appearing in high Q planar toroidal THz met... more In this paper, we propose new kind nonradiating state appearing in high Q planar toroidal THz metamaterial. So-called pseudo-anapole regime arises when the trivial solution to the non-radiating state condition is met. Here, both toroidal and electric dipole intensities are suppressed at resonance frequency while their far-field zone intensities tend to zero. The proposed effect is quite different from well-known anapole regime that is established by the condition p =− ikT that leads to nonradiating state [1] . The fundamental difference of pseudo-anapole state is that suppression of both electric and toroidal multipoles providing an opportunity for study of higher order multipoles from different families. This effect has been confirmed both numerically and experimentally in terahertz frequency range.
We investigate all-dielectric flattened ellipsoid particle on dielectric substrate for demonstrat... more We investigate all-dielectric flattened ellipsoid particle on dielectric substrate for demonstration of hybrid anapole mode. We find that such particle could support first and second order electric and magnetic anapole modes that manifesting fully eliminated scattering of the structure. We demonstrate scattering properties of high index all-dielectric ellipsoid particle and provide multipole decomposition on the scattering minimum.
Here, we propose novel transparency effect in cylindrical all-dielectric metamaterials. We show t... more Here, we propose novel transparency effect in cylindrical all-dielectric metamaterials. We show that cancellation of multipole moments of the same kind lead to almost zero radiation losses due to the counter-directed multipolar moments in metamolecule. . Nullifying of multipoles, mainly dipoles and suppression of higher multipoles results in ideal transmission of incident wave through the designed metamaterial. The observed effect could pave the road to new generation of light-manipulating transparent metadevices such as filters, waveguides, cloaks and more.
In this paper, we concern on nonradiating properties of novel silicon metamaterials due to multip... more In this paper, we concern on nonradiating properties of novel silicon metamaterials due to multipolar interaction. Destructive interference of electric dipole moment and the next term of multipolar decomposition - toroidal dipole moment, leads to nonradiating anapole mode, which is nowadays widely studying among electrodynamic phenomena. Therefore, we propose technically simple metamaterial design, which does not demand multistep fabrication. This kind of metamaterial is the promising in nanophotonics and plasmonics due to subtle sensing, nonradiative data transfer, Aharonov-Bohm effect and other demonstrations.
2019 International Conference on Electromagnetics in Advanced Applications (ICEAA), 2019
Artificial magnetic response is one of the recent research topics that is receiving significant a... more Artificial magnetic response is one of the recent research topics that is receiving significant attention. Nevertheless, because of the difficulties in exciting not only the magnetic moment but also multipoles of different order, and the presence of losses, the efficiency of its generation is strongly compromised. On the other hand, the presence of a cloaking phenomena can be described in terms of anapole mode, which consists in the compensation of the scattering due to the moment of the electric dipole with the toroidal one. Because of this effect, the remaining part of the field will exhibit a strong(er) magnetic dipole moment response. In the present study, the response of a cloaking device based on a real-life geometry is therefore analysed with particular focus on the anapole mode excitation and ideal magnetic dipole behavior.
2019 International Conference on Electromagnetics in Advanced Applications (ICEAA)
In this paper, we present a new kind of nanoantennas for effective illumination of parabolic surf... more In this paper, we present a new kind of nanoantennas for effective illumination of parabolic surfaces, consisting of a dielectric hollow cylinder as a reflector and a dipole source as an emitter. Precisely chosen parameters of the nanoantenna design provides radiation pattern with broad main lobe and strongly suppressed side lobes. According to the simulation results, such pattern is quite similar to the ideal “$\Pi$” configuration, necessary for efficient illuminating reflectors as shown in Figure 1.
2018 International Conference on Electromagnetics in Advanced Applications (ICEAA), 2018
In this paper we present new metamaterial based on dielectric slab with perforated holes. In this... more In this paper we present new metamaterial based on dielectric slab with perforated holes. In this structure, electric and toroidal dipoles states anapole mode (antiphase oscilation) in the optical frequency range. Our metamaterial has great potential for various kinds of optical devices due to the simplicity of fabrication at the nanoscale regime.
2019 International Conference on Electromagnetics in Advanced Applications (ICEAA), 2019
Here we propose new kind silicon metamaterial that possesses anapole mode in optical range. The d... more Here we propose new kind silicon metamaterial that possesses anapole mode in optical range. The design can be implemented by the use of hole perforation that considerably reduces fabrication challenges and silicon materials possess low dissipative losses. Simulation results show full transmission of metamaterial in visible range.
2018 International Conference on Electromagnetics in Advanced Applications (ICEAA), 2018
This work dedicated to novel cloaking technique, based on the multipolar dipole interaction. Thus... more This work dedicated to novel cloaking technique, based on the multipolar dipole interaction. Thus, destructive interface between electric and toroidal dipole moments, known as anapole mode, underpins the cloaking effect in THz range and anticipated to find applications in nanophotonics and plasmonics.
2021 International Conference on Electromagnetics in Advanced Applications (ICEAA), 2021
In this paper, we propose new kind nonradiating state appearing in high Q planar toroidal THz met... more In this paper, we propose new kind nonradiating state appearing in high Q planar toroidal THz metamaterial. So-called pseudo-anapole regime arises when the trivial solution to the non-radiating state condition is met. Here, both toroidal and electric dipole intensities are suppressed at resonance frequency while their far-field zone intensities tend to zero. The proposed effect is quite different from well-known anapole regime that is established by the condition p =− ikT that leads to nonradiating state [1] . The fundamental difference of pseudo-anapole state is that suppression of both electric and toroidal multipoles providing an opportunity for study of higher order multipoles from different families. This effect has been confirmed both numerically and experimentally in terahertz frequency range.
We investigate all-dielectric flattened ellipsoid particle on dielectric substrate for demonstrat... more We investigate all-dielectric flattened ellipsoid particle on dielectric substrate for demonstration of hybrid anapole mode. We find that such particle could support first and second order electric and magnetic anapole modes that manifesting fully eliminated scattering of the structure. We demonstrate scattering properties of high index all-dielectric ellipsoid particle and provide multipole decomposition on the scattering minimum.
Here, we propose novel transparency effect in cylindrical all-dielectric metamaterials. We show t... more Here, we propose novel transparency effect in cylindrical all-dielectric metamaterials. We show that cancellation of multipole moments of the same kind lead to almost zero radiation losses due to the counter-directed multipolar moments in metamolecule. . Nullifying of multipoles, mainly dipoles and suppression of higher multipoles results in ideal transmission of incident wave through the designed metamaterial. The observed effect could pave the road to new generation of light-manipulating transparent metadevices such as filters, waveguides, cloaks and more.
In this paper, we concern on nonradiating properties of novel silicon metamaterials due to multip... more In this paper, we concern on nonradiating properties of novel silicon metamaterials due to multipolar interaction. Destructive interference of electric dipole moment and the next term of multipolar decomposition - toroidal dipole moment, leads to nonradiating anapole mode, which is nowadays widely studying among electrodynamic phenomena. Therefore, we propose technically simple metamaterial design, which does not demand multistep fabrication. This kind of metamaterial is the promising in nanophotonics and plasmonics due to subtle sensing, nonradiative data transfer, Aharonov-Bohm effect and other demonstrations.
2019 International Conference on Electromagnetics in Advanced Applications (ICEAA), 2019
Artificial magnetic response is one of the recent research topics that is receiving significant a... more Artificial magnetic response is one of the recent research topics that is receiving significant attention. Nevertheless, because of the difficulties in exciting not only the magnetic moment but also multipoles of different order, and the presence of losses, the efficiency of its generation is strongly compromised. On the other hand, the presence of a cloaking phenomena can be described in terms of anapole mode, which consists in the compensation of the scattering due to the moment of the electric dipole with the toroidal one. Because of this effect, the remaining part of the field will exhibit a strong(er) magnetic dipole moment response. In the present study, the response of a cloaking device based on a real-life geometry is therefore analysed with particular focus on the anapole mode excitation and ideal magnetic dipole behavior.
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Papers by Anar Ospanova