Dzmitry Yakimchuk

Dzmitry Yakimchuk
National Academy of Sciences of Belarus | NAS B · Scientific-Practical Materials Research Centre of National Academy of Sciences of Belarus / Division of cryogenic research

PhD

About

46
Publications
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560
Citations

Publications

Publications (46)
Article
Full-text available
The results of studies on the wettability properties and preparation of porous anodic alumina (PAA) membranes with a 3.3 ± 0.2 μm thickness and a variety of pore sizes are presented in this article. The wettability feature results, as well as the fabrication processing characteristics and morphology, are presented. The microstructure effect of thes...
Article
Recently, high attention has been paid to template synthesis as a method for obtaining nanostructures with predetermined shapes and sizes. This is an obvious approach, in which the size and shape of the pores limit the geometry of the nanostructures formed inside them. As a result, nanostructures completely repeat the shape of the template pores. H...
Article
[email protected] core-shell nanotubes were synthesized using a two-stage method including Ni nanotubes growth in pores of PET template and their electroless wet-chemical functionalizing with gold. The structure, morphology, chemical composition, surface condition and magnetic properties of [email protected] nanotubes were comprehensively studied....
Article
Full-text available
The modern development of nanotechnology requires the discovery of simple approaches that ensure the controlled formation of functional nanostructures with a predetermined morphology. One of the simplest approaches is the self-assembly of nanostructures. The widespread implementation of self-assembly is limited by the complexity of controlled proce...
Article
Full-text available
Bi nanocrystalline films were formed from perchlorate electrolyte (PE) on Cu substrate via electrochemical deposition with different duration and current densities. The microstructural, morphological properties, and elemental composition were studied using scanning electron microscopy (SEM), atomic force microscopy (AFM), and energy-dispersive X-ra...
Article
Full-text available
Modern electronic systems and equipment used in aerospace and nuclear technology, as well as many scientific and medical devices, are used under the influence of a wide range of ionizing radiation (electrons, protons, heavy charged particles etc.). Protons or heavy charged particles exposure can lead to failures in the operation of spacecrafts elec...
Article
Full-text available
Surface-enhanced Raman spectroscopy (SERS) is a promising optical method for analyzing molecular samples of various nature. Most SERS studies are of an applied nature, indicating a serious potential for their application in analytical practice. Dendritelike nanostructures have great potential for SERS, but the lack of a method for their predictable...
Article
Highly branched metal nanostructures are of great interest for creating highly sensitive sensors of various molecules through the use of surface-enhanced Raman scattering. However, the method of manufacturing such nanostructures is often complex and difficult to reproduce. Herein, we report a simple, one-pot synthesis of flower-like gold nanostruct...
Article
The size and interposition of particles is a key parameter for the practical application of metallic nanostructures which requires the development of a synthesis method with precise control over their parameters. In this work the method for the synthesis of gold nanostructures in the pores of silicon dioxide from a gold sulfite complex and a gold c...
Article
Ni nanopillars (Ni NPs) composite material formation technology embedded in porous anodic alumina by electrochemical deposition is presented in this paper. The morphological and structural properties of the composite material were investigated using scanning electron microscopy, atomic force microscopy, X-ray diffraction. The corrosion resistance o...
Chapter
This work aims to study the possibility of using SiO2/n-Si porous template to the formation of copper nanostructures with different morphology for the surface-enhanced Raman spectroscopy (SERS) applications. Porous SiO2/n-Si templates were obtained using swift heavy ion-track technology including irradiation and chemical etching. The influence of t...
Article
Gold nanostructures were fabricated in porous SiO2/Si ion-track templates by the wet chemical deposition from a solution of Au(I) sulfite complex. Their morphological features were analyzed, and features of the deposition processes were determined. A mechanism describing the selective formation of gold nanostructures in the pores of SiO2 was propos...
Article
The structure, microstructure, magnetic properties and magnetocaloric effect in the BiFeO3-based multiferroics with a partial isovalent substitution of bismuth for europium ions have been experimentally and theoretically investigated by X-ray diffraction, SEM and magnetic methods. The ceramic EuxBi1−xFeO3 (0 ≤ x ≤ 0.2) samples have been prepared by...
Article
The potential ability of SiO 2 (Ag)–Si nanosystem to induce oxidative stress and death of human peripheral blood cells involving reactive oxygen species was studied using a double-color cytoflourometry method. This SiO 2 (Ag)–Si system with silver dendrites obtained via the metal deposition into the pores of SiO 2 template on a silicon substrate wa...
Article
Full-text available
Due to the effective development of ion-track technology, it became possible to produce porous templates with large areas, which are of interest for mass production of nanostructures. Given that the template parameters often define properties of the resulting nanostructures and nanosystems, a reliable method for non-destructive testing is needed fo...
Article
The paper demonstrates a simple way to control the filling degree of the pores of a silicon oxide template on silicon substrate with nickel. SiO2/Si template was formed using the swift heavy ion tracks technology, which includes irradiation with high energy ions and chemical transformation of the obtained latent tracks into the pores. The preparati...
Article
The use of porous templates for controlled formation of nanostructures and nanosystems requires reliable method of pore size, shape, quantity per unit area (porosity), distance to nearest neighbors and porous matrix thickness monitoring. The scanning electron microscopy method allows to estimate these parameters, however, manual processing of obtai...
Article
Structures containing a nickel precipitate in the pores of silicon oxide were obtained by ion-track technology. The SiO2(Ni)/Si structures were exposed under irradiation with ⁶⁰Co gamma quanta with energy of 1.25 MeV at the dose up to 1.5 × 10⁵ Gy. The electrophysical and galvanomagnetic characteristics of the SiO2(Ni)/Si structures before and afte...
Preprint
Full-text available
Even after more than four decades of rapid-pace advances, the adoption of Surface-Enhanced Raman Scattering (SERS) remains limited, due to the difficulties in fabrication of effective and affordable nanostructured surfaces or templates. From this point-of-view, self-assembly techniques of SERS substrates formation allowing fabrication of highly bra...
Article
Full-text available
Progress in biomedicine leads to the appearance of novel methods of treatment at both the molecular and cellular scales. This treatment requires the nanoscale materials, capable to affect locally being manipulated from outside. Magnetic nanotubes (NTs) are the promising tool for a variety of bioapplications, including targeted delivery driven by a...
Article
Today, the possibility of amplifying the signal of Raman scattering is intensively studied in order to realize a simple and reliable tool for monitoring of ultra-small concentrations of chemical and biological substances. Plasmon-active nanostructures can serve as the basic element of substrates for signal amplifying, and the degree of amplificatio...
Article
It is proposed to use the ellipsometry as an express method of estimating etched ion track parameters in a silicon dioxide template. Ellipsometric studies are carried out on a series of SiO2/Si templates with pores in the silicon oxide layer. Using the standard model of the interaction of a polarized light beam with a layered structure of silicon o...
Article
Stability of nanomaterials during their life cycle is a crucial problem of modern nanoscience. In order to understand the processes, which are going in the nanostructures, the comprehensive study of the influence of media with different acidity on the nickel nanotubes morphology and structure was carried out. On the base of the analysis of nanotube...
Article
Full-text available
This work is devoted to study the peculiarities of charge transfer in SiO 2 (Ni)/Si nanosystems formed as a result of the electrochemical deposition of nickel into the pores of the ion-track silicon oxide template on silicon. Special attention is given to analysis of the results in the context of the band structure and physical properties of dielec...
Article
Full-text available
Targeted delivery of drugs and proteins by magnetic field is a promising method to treat cancer that reduces undesired systemic toxicity of drugs. In this method, the therapeutic agent is attached through links to functional groups with magnetic nanostructure and injected into the blood to be transported to the problem area. To provide a local effe...
Article
The formation of silver nanostructures (AgNSs) with different crystals morphology in porous SiO2/p-Si templates by the electroless wet-chemical method at temperatures between 20 and 50 °C and surface-enhanced Raman scattering (SERS) was investigated. It was found that optimized dendritic silver architectures contain a significant number of localize...
Article
Full-text available
Surface-enhanced Raman scattering is a powerful method used in chemoand biosensorics. The aim of this work was to determine the relationship between the signal of Surface-enhanced Raman scattering and the shape of silver nanostructures under the influence of laser radiation with different power. Plasmonic nanostructures were synthesized in silicon...
Article
n-Si/SiO2(Cu) structures with different morphologies of copper deposits are produced using the template synthesis method. Deposition of Cu nanostructures and their structural features is thoroughly studied, and mechanisms for the formation of compact and dendrite-like deposits in the pores of the SiO2 template on the n-type single-crystal silicon s...
Conference Paper
Full-text available
The PET track membrane parameters have been comprehensively studied at the various formation stages. Using X-ray diffraction analysis changes in the structure of the polymer after irradiation, UV sensitization and etching have been demonstrated. The consistent analysis of changes in track membrane parameters has been carried out during the etching...
Article
Full-text available
Due to the Ni nanotubes shape anisotropy, low specific density, large specific surface, uniform magnetic field have been offered as carriers for targeted delivery of drug or protein and the process of their formation from synthesis stage to the stage of surface modification and protein attaching has been demonstrated. Some steps to hasten their bio...
Article
A comprehensive study of parameters of the track membranes based on the polyethylene terephthalate has been carried out at different formation stages. Using the X-ray diffraction analysis, the changes in the structure of the polymer after its irradiation, UV-sensitization and etching are shown. By means of scanning electron microscopy, a sequential...
Article
Copper nanotubes are electrochemically synthesized using ion-track polyethylene terephthalate templates. The structure and morphology of the nanotubes constructed under different synthesis conditions are studied with the assistance of scanning electron microscopy, energy-dispersive spectroscopy, X-ray diffraction analysis, and the manometric gas-pe...
Article
Nanoporous silicon oxide templates formed by swift heavy ion tracks technology have been investigated. The influence of the heavy ion characteristics, such as type of ion, energy, stopping power and irradiation fluence on the pore properties of the silicon oxide templates, has been studied. Furthermore, the process of pore formation by chemical etc...
Article
Full-text available
Simple method of tunable synthesis of copper nanotubes based on template synthesis was developed. A comprehensive study of the structural, morphological and electrical characteristics of the obtained nanostructures was carried out. Characterization of structural features was made by methods of scanning electron microscopy, energy dispersive spectro...
Chapter
Nickel-carbon nanocomposites have been synthesized by the solid-phase pyrolysis of nickel-phthalocyanine at temperatures in the range 600–1100 °C and synthesis duration time up to 300 min. Nickel nanoparticles of various size have been obtained, which are embedded in carbon nanotubes (CNT), nanofibers and encapsulated in the graphite-like shell. A...
Article
Full-text available
In this paper, using the method of electrochemical template synthesis, ordered arrays of metallic nanostructures on the basis of cobalt with various dimensions (180-380 nm) were obtained. The diameter of Co-nanotubes was controlled by original polymer matrix, which provided to prepare arrays consisting of individually standing cobalt nanotubes. The...

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