A5041156529- Magnetic properties of thin films
- Metallic Glasses and Amorphous Alloys
- Theoretical and Computational Physics
- Electrodeposition and Electroless Coatings
- Semiconductor materials and interfaces
- Electron and X-Ray Spectroscopy Techniques
- Advanced Materials Characterization Techniques
- Magnetic Properties and Applications
- Gold and Silver Nanoparticles Synthesis and Applications
- Viral Infections and Vectors
- Phase-change materials and chalcogenides
- Advanced Electron Microscopy Techniques and Applications
- Law and Political Science
- Surface and Thin Film Phenomena
- Wireless Communication Networks Research
- Environmental and Industrial Safety
- Microstructure and mechanical properties
- nanoparticles nucleation surface interactions
- Vector-borne infectious diseases
- Nanoporous metals and alloys
- Mosquito-borne diseases and control
- Plasmonic and Surface Plasmon Research
- Orbital Angular Momentum in Optics
- Nanofabrication and Lithography Techniques
- Near-Field Optical Microscopy
Volgograd State Agricultural University
2021-2024
Far Eastern Federal University
2014-2023
Institute of Molecular Pathology and Pathomorphology
2023
Central Research Institute of Epidemiology
2023
Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing
2022
Deutsche Nationalbibliothek
2022
Vladivostok State University
2018
St Petersburg University
2013
Saint Petersburg State University of Aerospace and Instrumentation
2008-2012
Far East University
2011-2012
Donut-shaped laser radiation, carrying orbital angular momentum, namely optical vortex, was recently shown to provide vectorial mass transfer, twisting transiently molten material and producing chiral micro-scale structures on surfaces of different bulk materials upon their resolidification. In this paper, we show that at high-NA focusing nanosecond vortices can produce nanoneedles (nanojets) variable size thin films such plasmonic materials, as silver gold films, covering thermally...
Nanophotonics based on resonant nanostructures and metasurfaces made of halide perovskites have become a prospective direction for efficient light manipulation at the subwavelength scale in advanced photonic designs. One main challenges this field is lack large-scale low-cost technique perovskite structures fabrication preserving highly luminescence. Here, unique properties addressed to their extremely low thermal conductivity (lower than that silica glass) high defect tolerance apply...
A comprehensive study of the properties coatings formed on a magnesium alloy by plasma electrolytic oxidation (PEO) using electrolytes with nanosized particles anatase (titanium dioxide) has been carried out. Formed reduce corrosion current density 2.5-fold and increase hardness 25% compared to coating without particles. Confocal micro-Raman spectroscopy revealed presence rutile phases in composition PEO due incorporation TiO2 nanoparticles during treatment. The titanium dioxide had positive...
Surface-enhanced Raman scattering (SERS) and surface-enhanced photoluminescence (SEPL) are emerging as versatile widespread methods for biological, chemical, physical characterization in close proximity of nanostructured surfaces plasmonic materials. Meanwhile, single-step, facile, cheap, green technologies large-scale fabrication efficient SERS or SEPL substrates, routinely demonstrating both broad response high enhancement characteristics, still missing. In this research, single-pulse...
All-dielectric resonant nanostructures made of high-index dielectrics have recently emerged as a promising surface-enhanced Raman scattering platform which can complement or replace the metal-based counterparts in routine sensing measurements.
Abstract Interaction of complex-shaped light fields with specially designed plasmonic nanostructures gives rise to various intriguing optical phenomena like nanofocusing surface waves, enhanced nonlinear response and appearance specific low-loss modes, which can not be excited ordinary Gaussian-shaped beams. Related are commonly fabricated using rather expensive time-consuming electron- ion-beam lithography techniques limiting real-life applicability such an approach. In this respect,...
Security labels combining facile structural color readout and physically unclonable one-way function (PUF) approach provide promising strategy for fighting against forgery of marketable products. Here, we justify direct femtosecond-laser printing, a simple scalable technology, fabrication high-resolution (12 500 dots per inch) durable PUF with substantially large encoding capacity 10895 spectroscopy-free optical signal readout. The proposed tags are comprised laser-printed plasmonic...
Formation of highly ordered nanostructures on a crystalline silicon surface is demanded for novel optoelectronic and nanophotonic designs pushing toward development inexpensive high-performing nanostructuring technologies. Here, we demonstrate that laser-induced periodic structuring c-Si protected by thin Hf over-layer allows one to fabricate extremely uniform high-aspect-ratio gratings with characteristic periodicity ≈900–950 450 nm. Corresponding ordering originates from interference...
We experimentally study the structure and dynamics of magnetic domains in synthetic antiferromagnets based on Co/Ru/Co films. Dramatic effects arise from interaction among topological defects comprising dual domain walls these structures. Under applied fields, propagate following bi-meronic (bi-vortex/bi-antivortex) built walls. Application an external field triggers a rich dynamical response: The propagation depends mutual orientation chirality bi-vortices bi-antivortices For certain...
Nanostripes with varying widths are lithographed on Co thin films strong magnetic anisotropy resulting from the epitaxial growth onto vicinal Si(111) substrate. The competition between magnetocrystalline and shape anisotropies is used to tune behavior of nanostripes. Single domain configuration observed for nanostructures where go along same direction. However, more complicated configurations such as open stripe domains can be developed when both compete. have been experimentally...
The structure of electrolytically deposited nanocrystalline alloys the CoW-CoNiW-NiW systems under low-temperature heating was investigated by means high-resolution transmission electron microscopy (HRTEM), high-angle annular dark-field scanning (HAADF STEM), and analytical methods such as energy dispersive x-ray spectroscopy (EDS) loss (EELS). Structural relaxation crystallization were at temperatures 200°C to 300°C. structural compositional inhomogeneities found in alloys, while local...
Pulsed-laser dry printing of noble-metal microrings with a tunable internal porous structure, which can be revealed via an ion-beam etching post-procedure, was demonstrated. The abundance and average size the pores inside were shown to tuned in wide range by varying incident pulse energy nitrogen doping level controlled process magnetron deposition gold film appropriate gaseous environment. fabricated provide many-fold near-field enhancement electromagnetic fields, confirmed mapping...
A systematic investigation of the magnetization reversal processes is carried out for single epitaxial Co(111) nanowires possessing step-induced magnetic anisotropy with easy direction oriented perpendicular to long wire axis. Wires varying width (500–1800 nm) were patterned by focus ion-beam etching. We separated 3 regions NW width: first characterized dominating anisotropy, in second shape prevails and third two anisotropies are competition. establish experimentally mechanisms directions...
The arrays of circle and square nanodots were prepared by Ga+ ion-beam etching thing cobalt films with induced uniaxial magnetic anisotropy. size researched was d=600, 450 250 nm that equal or less then radius ferromagnetic correlation for continuous Co film. distances l=2d 3d between center in the taken. interpretation experimental force microscopy data done means micromagnetic simulation MFM-experiment simulation. Each nanodot d=600 has multidomain structure at demagnetisation state l=3d...
The growth, composition and structure of sandwich structures (Fe-rich layer/Si-rich layer/Fe-rich silicide layer) grown on a Si(111) surface were studied by few complementary microscopic spectroscopic techniques with high spatial resolution. Intermixing at the Fe/Si Si/Fe interfaces is demonstrated. Fe-rich layers directly are crystalline have abrupt but rough both sides. succeeding disordered their fuzzy. distributions Fe Si within laterally non-uniform. reproducible fabrication thin...