A5081137459- Nanowire Synthesis and Applications
- Extracellular vesicles in disease
- Photonic Crystals and Applications
- GaN-based semiconductor devices and materials
- Laser-Ablation Synthesis of Nanoparticles
- Laser Material Processing Techniques
- Graphene research and applications
- Conducting polymers and applications
- MicroRNA in disease regulation
- ZnO doping and properties
- Semiconductor Quantum Structures and Devices
- COVID-19 Clinical Research Studies
- Electrocatalysts for Energy Conversion
- Carbon Nanotubes in Composites
- Photonic and Optical Devices
- Semiconductor materials and interfaces
- Advanced Electron Microscopy Techniques and Applications
- Advanced Sensor and Energy Harvesting Materials
- Plasmonic and Surface Plasmon Research
- RNA Interference and Gene Delivery
- solar cell performance optimization
- Membrane Separation Technologies
- Nanomaterials and Printing Technologies
- Semiconductor materials and devices
- Electron and X-Ray Spectroscopy Techniques
St Petersburg University
2015-2024
St. Petersburg Department of Steklov Institute of Mathematics
2020
Peter the Great St. Petersburg Polytechnic University
2018
Institute of Physics
2016
Subwavelength particles supporting Mie resonances underpin a strategy in nanophotonics for efficient control and manipulation of light by employing both an electric magnetic optically induced multipolar resonant response. Here, we demonstrate that monolithic dielectric nanoparticles made CsPbBr3 halide perovskites can exhibit Mie-resonant lasing structural coloring the visible near-IR frequency ranges. We employ simple chemical synthesis with nearly epitaxial quality fabricating...
Visual art is an integral part of human life, which, like a mirror, reflects the lifestyle and capabilities generation. Moreover, each epoch contributes to development artistic expression techniques. In this article, we discuss three novel approaches visual design from point view modern photonics laser technology. Laser methods metal coloring are considered regarding their physical nature, ample opportunities for creation different artworks demonstrated.
Abstract Implementation of resonant nanoparticles (NPs) for improving performance organometal halide perovskites solar cells is highly prospective approach, because it compatible with the solution processing techniques used any organic materials. Previously, metallic NPs have been incorporated into perovskite better light absorption and charge separation. However, high inherent optical losses reactivity noble metals halides in are main limiting factors this approach. Incidentally, low‐loss...
A comprehensive picture of the nanosecond-laser generation colloidal nanoparticles in liquids is nowadays demand their high-throughput industrial fabrication for diverse perspective biomedical, material science, and optoelectronic applications. In this study, using silicon as an example, we present a self-consistent experimental visualization theoretical description key transient stages during liquids: plasma-mediated injection ablated mass into liquid driving vapor bubble, finalized by...
Light is critical for art. It allows us to see color, and can itself be a tool creating unique pieces of art design. Here we demonstrate that laser multifunctional effective the creation masterpieces, analogous process an artist canvas with classical paints brushes. We investigate interaction between focused irradiation metallic surfaces analyze optical effects in thin oxide films three main artistic operations: color making, multiple changes, erasing managed by nanosecond laser. These...
ABSTRACT The aim of this study was to investigate cell source‐dependent nucleic acids repertoire diverse subpopulations plasma extracellular vesicles (EVs). Blood from nine healthy volunteers used for the analysis. Samples EVs were obtained by differential centrifugation plasma. application high‐sensitivity fluorescence‐activated sorting (hs‐FAVS) using fluorophore‐conjugated anti‐CD41‐FITC (Fluorescein isothiocyanate) and anti‐CD235a‐PE antibodies allowed isolation three EVs, namely CD41+...
Rubber materials are the key components of flexible optoelectronic devices, especially for light-emitting diodes based on arrays inorganic nanowires (NWs).
Nanoporous iridium electrodes are prepared and electrochemically investigated towards the water oxidation (oxygen evolution) reaction. The preparation is based on 'anodic' aluminum oxide templates, which provide straight, cylindrical nanopores. Their walls coated using atomic layer deposition (ALD) with a newly developed reaction results in metallic layer. ALD film growth quantified by spectroscopic ellipsometry X-ray reflectometry. morphology composition of characterized scanning electron...
Selective-area remote epitaxy (SA-REpi) is demonstrated for fabricating mechanically releasable position-controlled ZnO microrod (MR) arrays from donor wafers in an arrayed form. Intaglio-patterned graphene, consisting of basal single-layer graphene (SLG) overlayered with multilayer (MLG) patterned perforated holes, transferred onto a GaN/Al2O3 wafer on which the hydrothermal synthesis performed growing MRs. The SLG area exposed through MLG pattern yields MRs, whereas plateau inhibits...
In this study, we developed a method for the fabrication of electrically conductive copper patterns arbitrary topology and films on dielectric substrates, by improved laser-induced synthesis from deep eutectic solvents. A significant increase in processing efficiency was achieved acceptor substrate pretreatment, with microplasma technique, using auxiliary glass substrates optional laser post-processing recorded structures; thus, proposed approach offers complete manufacturing cycle,...
Platelet concentrates are used in clinic for therapy and prophylaxis of conditions associated with platelet deficiency or malfunction. The characteristics gradually change during pretransfusion storage, affecting their clinical effectiveness the risk adverse transfusion reactions. presence platelet-derived membrane vesicles is an important characteristic concentrates. Due to functionality, changes number molecular compositions have major effects on properties preparations. existence...
We report on single photon emitters for the green-yellow spectral range, which comprise a CdSe/ZnSe quantum dot placed inside semiconductor tapered nanocolumn acting as multimode nanoantenna. Despite presence of many optical modes inside, such nanoantenna is able to collect radiation and ensure its effective output. demonstrate periodic arrays emitters, are fabricated by focused ion beam etching from II-VI/III-V heterostructure grown using molecular epitaxy. With non-resonant pumping,...
The films of single-walled carbon nanotubes (SWCNTs) are a promising material for flexible transparent electrodes, which performance depends not only on the properties individual but also, foremost, bundling nanotubes. This work investigates impact densification optical and electronic SWCNT bundles fabricated films. Our ab initio analysis shows that optimally densified bundles, consisting mixture quasi-metallic semiconducting SWCNTs, demonstrate behavior can be considered as an effective...
In this paper, we present a new methodology for creating 3D ordered porous nanocomposites based on anodic aluminum oxide template with polyaniline (PANI) and silver NPs. The approach includes in situ synthesis of templates nanomembranes laser-induced deposition (LID) Ag NPs directly the pore walls. proposed method allows formation structures high aspect ratio pores, topological ordering uniformity properties throughout sample, specific surface area. For developed structures, demonstrated...
Solid-state nanopore devices with plasmonic nanoantennas are powerful tools that allow for working individual particles and molecules in solution as well providing light-induced control of ionic current flow through them. However, the manipulation by light still requires high power densities and, thus, results optical heating nanopore. Here, we solve this problem using a 5 nm gap bow-tie nanoantenna on SiNx membrane irradiated broadband spectrum incident light. In regime, photons not only...
We experimentally compared the shapes and sizes of isolated domains created by focused ion beam irradiation in lithium niobate crystals doped MgO with polar surface covered dielectric (resist) layer those free surface. attributed larger samples resist to localization resist. revealed a change domain shape as function increasing dose explained it terms kinetic approach taking into account modification layers irradiation. applied obtained knowledge for 1D 2D periodical poling using beam....
In this paper, we report a method to estimate the average length of bundles in randomly oriented network single-walled carbon nanotubes (SWCNTs) by analyzing dependence its sheet resistance on distance between contacts. We propose an analytical model verify and find model's limitations using Monte Carlo simulations. Then, apply proposed approach experimental results acquired from 95% (at 550 nm wavelength) transparent SWCNT films. The bundle can be used situ does not require any specific...
Severe COVID-19 alters the biochemical and morphological characteristics of blood cells in a wide variety ways. To date, however, vast majority research has been devoted to study leukocytes, while erythrocyte changes have received significantly less attention. The aim this was identify morphology abnormalities that occur COVID-19, compare number different poikilocyte types, measure sizes provide data on size dispersion. Red obtained from 6 control donors (800-2200 per donor) 5 patients...