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Journal of Advanced Materials and Technologies

Is a peer-reviewed scientific journal of research in materials science and related issues in materials physics and mechanics.

Journal publishes original articles, reviews, short reports written by both renowned scientists and young researchers that contribute to the development of modern materials science.

ISSN 2782-2192 (Print)
ISSN 2782-2206 (Online)

The journal promotes research and exchange of information in the field of theoretical and practical research into materials science, modeling of processes involved in the creation of new materials, including nanomaterials, their properties and application.

Scientific Journal is registered by the Federal Service for Supervision of Communications, Information Technology, and Mass Media (The certificate of registration PE No. FS 77-74804 of 25 January 2019 – periodical printed edition, journal)

The journal papers and metadata are available at Chemical Abstracts, CAS (American Chemical Society), Google Scholar, WorldCat, ROAR (Registry of Open Access Repositories), OpenAIRE (OpenAIRE - Open Access Infrastructure for Research in Europe), BASE (Bielefeld Academic Search Engine), RePEc: Research Papers in Economics, EBSCO.

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Tambov State Technical University (TSTU)

Tambov, Russian Federation.

 

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Merzhanov Institute of Structural Macrokinetics and Materials Sciences of Russian Academy of Sciences (ISMAN),

Chernogolovka, Moscow region, Russian Federation.

 

Circulation: 100 copies, periodicity: 4 times per year

Distribution: - Russia and abroad

Publisher: Tambov State Technical University

Rename information: «Advanced materials & technologies» (2016-2021), Print ISSN 2414-4606, Online ISSN 2541-8513

 

Chief Editor

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Mikhail I. Alymov,

D.Sc.(Engineering), Professor, Corresponding Member of the Russian Academy of Sciences (RAS), Director of Merzhanov Institute of Structural Macrokinetics and Materials Sciences (ISMAN), RAS, Chernogolovka, Moscow Region, Russian Federation

Current issue


Articles

Information flows in the human brain. Roger Guillemin is 100 years old
V. Tyutyunnik

🗏 : 008-011
DOI: https://doi.org/10.17277/jamt.2024.01.pp.008-011
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The paper presents brief biographical information for the 100th anniversary of Roger Guillemin, a distinguished American scientist who won the 1977 Nobel Prize in Physiology or Medicine. He shared half of the prize with Andrew W. Schally “for their discoveries concerning the peptide hormone production of the brain”; the other half went to Rosalyn S. Yalow “for the development of radioimmunoassays of peptide hormones”. The paper briefly describes the main scientific achievements of R. Guillemin in the development of neuroendocrinology. He isolated somatotropin (growth hormone), identified molecules of thyrotropin-releasing hormone thyreoliberin, which controls all thyroid functions, as well as dozens of other molecules from the hypothalamus. His research has led to the development of treatments for diseases ranging from infertility to pituitary tumors. With his discoveries of certain information flows in the human brain, he contributed to deciphering the code of human life. Guillemin's early training in the construction of radio receivers and transmitters was of great importance, and his serious experience with computers has led him to become one of the pioneers in digital painting. R. Guillemin retired from active scientific life only three years ago.

Metal oxide catalysts for low-temperature template CCVD synthesis of carbon nanotubes
A. Prudchenko, O. Polyakova, J. Protasevich

🗏 : 012-022
DOI: https://doi.org/10.17277/jamt.2024.01.pp.012-022
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Using the method of polymerized complex precursors (PCP) and a wide range of chelating agents, we synthesized metal oxide catalysts (MOCs) with a general composition of Me2Co / CaCO3 (CaO, MgO, NaCl, Me – Fe, Ni) and a molar ratio of Me2Co / carrier from 0.06 : 1 to 0.55 : 1; the effectiveness of such MOCs in the synthesis of carbon nanotubes by catalytic chemical vapor deposition was determined from the gas phase (CCVD synthesis). The dependence of the specific yield and morphology of the carbon product on the MOСs composition and the nature of the chelating agent, being a decisive factor in the process of preorganization of the catalyst structure, has been established. The use of catalysts for the growth of CNTs with the composition of Ni2Co / CaCO3 (CaO) allows the СCVD process to be carried out at low temperatures (450–500 °C) in contrast to 800 °C for MOСs with the composition of Fe2Co / CaCO3 (CaO) and leads to the formation of structurally homogeneous arrays of multi-walled carbon nanotubes. At the same time, the specific yield of CNTs decreases with an increase in the temperature of the process, but an increase in the mole fraction of active metals in the catalyst leads to an increase in the specific yield of CNTs. Yet, the dependence has the form of a curve with a tendency to reach a plateau, which indicates an increase in the processes of agglomeration of metal nanoparticles, increasing their size and, due to this, reducing the possibility of nucleation of carbon nanotubes. It has been suggested that low-temperature CCVD synthesis using MOC composition Ni2Co / CaCO3 (CaO, MgO, NaCl) is realized due to the unique magnetic and electronic properties of the Ni – NiO system, which makes it possible to initiate the process of nucleation and then growth of nuclei of catalytic nickel particles at temperatures exceeding the Curie point Ni (> 360 °С).

Structural and field emission characteristics of carbon-containing cathodes
E. Sheshin, N. Kundikova, V. Kireev, K. Belov, Fung Many, A. Berdnikov, D. Prosekov

🗏 : 023-036
DOI: https://doi.org/10.17277/jamt.2024.01.pp.023-036
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Field emission and structural characteristics of carbon nanotube fibers, polyacrylonitrile fibers, pyrolytic graphite and micrograined dense graphite were experimentally studied before and after their operation as a field emission cathode using registration of the current-voltage characteristics, optical microscopy, scanning electron microscopy and Raman spectroscopy in the spectral range from 1000 to 2000 cm–1. The experiments showed large and small structural rearrangements of carbon-containing cathodes and their surfaces in the process of field emission. In addition to lines of the Raman spectra with frequency maxima in the known ranges: G (1581–1599 cm–1), D (1363–1374 cm–1) and D' (1619– 1626 cm–1), characteristic of carbon materials, a line was detected in the range 1450–1480 cm–1, which is observed in the starting materials of pyrolytic graphite, carbon nanotube fibers and persists after operation, and also appears in a sample of micro-grained dense graphite after operation as a cathode. The relative integral intensity of line D in pyrolytic graphite, micrograined dense graphite, and carbon nanotube fibers undergoes the greatest change. In pyrolytic graphite and carbon nanotube fibers its increase is observed, and in micrograined dense graphite its decrease is observed after operation as a cathode. This made it possible to use the relative integral intensity of the D-line to quantify the change in the surface properties of carbon materials as a result of field emission when using these materials as cathodes, in particular to assess changes in crystallite sizes. Thus, the possibility of using Raman spectra to control the surface structure of carboncontaining materials has been demonstrated, which significantly facilitates the possibility of further analysis of the relationship between the surface structure and its emission characteristics. The prospects for improving the field emission characteristics of carbon-containing cathodes were discussed.

The influence of filler type on performance properties of thin-layer polymer composites
R. Domnichenko, O. Karmanova, S. Tikhomirov

🗏 : 037-043
DOI: https://doi.org/10.17277/jamt.2024.01.pp.037-043
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The study aims to establish the impact of environmental factors on the properties of operational stability of coatings based on aqueous dispersions, depending on the surface properties of the filler used. The dispersion of acrylic latex and epoxy resin preliminarily emulsified with sodium polyacrylate was taken as the basis. Dispersion was carried out at a temperature of 60°C. Crushed marble, sedimentary chalk, chemically precipitated chalk and grade kaolin were used as fillers. The hardener was polyethylenepolyamine. Compounding was carried out in a laboratory dissolver: a filler was introduced into the dispersion, and then it was dispersed. The hardener was introduced immediately before coating. As a result, the degree of influence on the coating properties was established. The process of hydrophilization of the coating surface due to the oxidation of the polymer phase was studied. The operational reliability of coatings under the action of aggressive factors depending on the filler was evaluated. It is shown that when calcium carbonate is replaced by kaolin, an increase in the resistance to defective coatings is observed, and adhesion remains at a high level. It has been established that the influence of environmental factors on the properties of the coating are arranged in the following order: thermal and moisture aging > action of electrolyte solutions > action of ultraviolet. Under ultraviolet light, hydrophilization of the coating surface occurs due to the oxidation of the polymer phase.

Mechanisms and kinetics of particle separation by size and density in an activated gravity flow of granular material
O. Ivanov, V. Dolgunin, K. Kudi

🗏 : 044-059
DOI: https://doi.org/10.17277/jamt.2024.01.pp.044-059
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A study was carried out to examine the effects of interaction and efficiency of the particle separation process by size and density in fast gravity flows activated by longitudinal momentum by acting the particles of the open surface of the flow with a rough conveyor belt. It has been established that the momentum effect leads to a zone formation in the central part of the flow. The zone has extremely high values of the shear rate and the gradient of the voids fraction, ensuring an intensive occurrence of the quasi-diffusion separation effect. In the region adjacent to the base of the flow, momentum action leads to a decrease in the proportion of voids and an increase in the shear rate, which contributes to the intensification of particle size segregation. In the flow region adjacent to the surface of the momentum action, high values of the voids fraction and the temperature of the granular medium provide favorable conditions for the occurrence of quasidiffusion effects of mixing and separation. As a result of momentum action, the separation efficiency increases if the direction of the quasi-diffusion separation and segregation flows coincides (separation by density), and the efficiency decreases when the directions of these flows are different (separation by size). With increasing intensity of the momentum action, the zone of intense shear deepens, and the efficiency of density separation increases, reaching its maximum value when the zone deepens by 0.5–0.55 of the layer thickness. With a further increase in the intensity of the momentum action, the separation efficiency decreases due to the expansion of the flow region in which the effect of quasi-diffusion mixing dominates. The conclusions based on the experimental results are confirmed by the method of mathematical modeling of the dynamics of particle separation by density in an activated gravity flow.

Technologies for controlled synthesis and characteristics of thin-layer topological nanoobjects and nanoclusters under laser irradiation on solid targets: algorithms and modeling, quantum bistability in 1D-microstructuresand analogy with carbon nanotubes
D. Bukharov, T. Khudayberganov, A. Tkachev, S. Arakelian

🗏 : 060-074
DOI: https://doi.org/10.17277/jamt.2024.01.pp.060-074
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The paper presents the results obtained from the studies of the processes of controlled laser synthesis of nanocluster / island nanofilms of different topological configurations of tens and hundreds of nanometers. The findings on structures with lead telluride (PbTe) and quantum bistability in a polariton-exciton system are considered separately. The analysis of the algorithms and computational models used to solve these problems are carried out, and a number of obtained and observed images for different surface nanostructures are presented. These issues are also considered in terms of the topological configuration influence, e.g. on the surface electrical conductivity of the samples under study, as well on other functional characteristics. The phenomenon of quantum bistability in the model of excitonic polaritons and the corresponding modes of its manifestation in 1D-columnar-type semiconductor microcavities, which can be considered as analogues of systems with carbon nanotubes, are also briefly discussed. It is modern advances in the technology of their production on an industrial scale, including bundles and threads of nanotubes, that allow talking about the possibility of their widespread usein micro-nanoelectronics, in particular, as elements of logic devices of various types, as well as sensitive universal sensors for various applications.
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