Optical Properties of Hyperbolic Metamaterials (Brief Review)

Kolmychek, I. A.; Malysheva, I. V.; Novikov, V. B.; Maydykovskiy, A. I.; Leontiev, A. P.; Napolskii, K. S.; Murzina, T. V.

doi:10.1134/s0021364021230089

Cited by 7 publications

(3 citation statements)

References 46 publications

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“…For AAO with a thickness of 30 μm, the fraction of pores in hexagonal coordination exceeded 96%, and the width of the interpore distance distribution and the in-plane mosaicity were below 5% and 3°, respectively. Large-scale defect-free structures are promising for creating photonic crystals [47] and hyperbolic metamaterials [48] with distinct functional properties.…”

Section: Discussionmentioning

confidence: 99%

New insight into anodization of aluminium with focused ion beam pre-patterning

Roslyakov¹,

Kushnir²,

Tsymbarenko³

et al. 2022

Nanotechnology

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The self-ordered anodic aluminium oxide (AAO) structure consists of micron-scale domains – defect-free areas with a hexagonal arrangement of pores. A substantial increase in domain size is possible solely by pre-patterning the aluminium surface in the form of a defect-free hexagonal array of concaves, which guide the pore growth during subsequent anodization. Among the numerous pre-patterning techniques, direct etching by focused gallium ion beam (Ga FIB) allows the preparation of AAO with a custom-made geometry through precise control of the irradiation positions, beam energy, and ion dosage. The main drawback of the FIB approach includes gallium contamination of the aluminium surface. Here, we propose a multi-step anodizing procedure to prevent gallium incorporation into the aluminium substrate. The suggested approach successfully covers a wide range of AAO interpore distances from 100 to 500 nm. In particular, anodization of FIB pre-patterned aluminium in 0.1 M phosphoric acid at 195 V to prepare AAO with the interpore distance of about 500 nm was demonstrated for the first time. The quantification of the degree of pore ordering reveals the fraction of pores in hexagonal coordination above 96% and the in-plane mosaicity below 3° over an area of about 1000 µm2. Large-scale defect-free AAO structures are promising for creating photonic crystals and hyperbolic metamaterials with distinct functional properties.

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Section: Discussionmentioning

confidence: 99%

New insight into anodization of aluminium with focused ion beam pre-patterning

Roslyakov¹,

Kushnir²,

Tsymbarenko³

et al. 2022

Nanotechnology

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“…Because of the subwavelength confinement and higher density of states associated with hyperbolic dispersion, field localization, and light-matter interaction strengths are improved. This is especially useful in the THz and optical frequencies, where electromagnetic waves interact with biological or chemical analytes more strongly than in the GHz region [ [54] , [55] , [56] , [57] ].…”

Section: Classification Of Metamaterials and Metasurfaces In Biosensi...mentioning

confidence: 99%

Recent advances in the metamaterial and metasurface-based biosensor in the gigahertz, terahertz, and optical frequency domains

Shamim,

Mohsin,

Rahman

et al. 2024

Heliyon

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“…Nanophotonics dealing with the exciting process of the interaction of light and nanostructures of various types has been the focus of extensive research of the last decades [1]. Nowadays metamaterials and metasurfaces consisting of nanostructures are well known tools for the control over the shape of the wavefront, propagation direction, polarization, spectral composition and intensity of the light beam [2][3][4]. A special place here belongs to metallic nanoantennas, which provide strong * Author to whom any correspondence should be addressed.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear-optical microscopy of asymmetric-shaped nanoantennas

Mamonov¹,

Kolmychek²,

Maydykovskiy³

et al. 2023

Laser Phys. Lett.

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Arrays of metal nanostructures have attracted much interest due to their unique potential as optical nanoantennas and nanosensors. Here we use the second harmonic generation (SHG) microscopy technique for the studies of the nonlinear optical (NLO) response of cobalt nanoparticles of triangular and trapezoid shapes separated from a Py/Si3N4 film by a 1.5 nm thick MgO spacer. We demonstrate that the nonsymmetric elongated shape of planar nanoparticles along with the strong light localization effects result in the enhancement of the NLO response, including SHG and two-photon fluorescence. We also demonstrate that the efficiency of the SHG in nanoparticles is rather sensitive to the polarization of the incident laser beam, the visibility of the nanostructures in the nonlinear microscopy images being the highest for the linear polarization of the laser beam.

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Optical Properties of Hyperbolic Metamaterials (Brief Review)

Cited by 7 publications

References 46 publications

New insight into anodization of aluminium with focused ion beam pre-patterning

New insight into anodization of aluminium with focused ion beam pre-patterning

Recent advances in the metamaterial and metasurface-based biosensor in the gigahertz, terahertz, and optical frequency domains

Nonlinear-optical microscopy of asymmetric-shaped nanoantennas

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