Eurasian Physical Technical Journal最新文献_第9页

MODELING OF CONFORMATIONAL CHANGES OF POLYELECTROLYTES ON THE SURFACE OF A TRANSVERSELY POLARIZED METAL NANOWIRE IN AN EXTERNAL ELECTRIC FIELD 外电场下横向极化金属纳米线表面聚电解质构象变化的模拟

Eurasian Physical Technical Journal Pub Date : 2022-06-15 DOI: 10.31489/2022no2/19-29

M. Kucherenko

{"title":"MODELING OF CONFORMATIONAL CHANGES OF POLYELECTROLYTES ON THE SURFACE OF A TRANSVERSELY POLARIZED METAL NANOWIRE IN AN EXTERNAL ELECTRIC FIELD","authors":"M. Kucherenko","doi":"10.31489/2022no2/19-29","DOIUrl":"https://doi.org/10.31489/2022no2/19-29","url":null,"abstract":"Gold nanowires with polyelectrolytes adsorbed on their surface are widely used in various biomedical research. In this work, for the first time, conformationalchanges in polyelectrolytes on the surface of a gold nanowire transversely polarized in an external electric field were considered. The properties of a specially created analytical model of conformational rearrangements of a Gaussian macromolecular chain adsorbed on the surface of a cylindrical metal nanowire in an external electric field transverse to the axis of the nanowire were investigated. Conformational changes of uniformly charged polypeptides on the surface of a transversely polarized gold nanowire have been studied using molecular dynamics simulation. On the basis of the analytical model and the results of molecular dynamics simulation, the spatial distributions of the density of polyelectrolyte units on the surface of the nanowire were constructed. With an increase in the strength of the external electric field, an asymmetric stretching of the polyelectrolyte fringe in the direction of the dipole moment of the transversely polarized nanowire was observed.","PeriodicalId":11789,"journal":{"name":"Eurasian Physical Technical Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46757752","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

SE OF COLLIMATION REGIME OF CHARGED PARTICLE BEAM FOR EXPAND THE FUNCTIONAL CAPABILITIES OF CORPUSCULAR OPTICAL SYSTEMS 利用带电粒子束的准直机制来扩展微粒光学系统的功能

Eurasian Physical Technical Journal Pub Date : 2022-06-15 DOI: 10.31489/2022no2/101-106

Saulebekov A.O, Kambarova Zh.T

引用次数: 0

STUDY OF ALGORITHM SYNTHETIC INERTIA FUNCTIONING IN ELECTRIC NETWORKS OFDIFFERENT DENSITY 不同密度电网中综合惯性函数的算法研究

Eurasian Physical Technical Journal Pub Date : 2022-06-15 DOI: 10.31489/2022no2/75-85

V. Rudnik

引用次数: 0

PERFORMANCE SIMULATION OF ECO-FRIENDLY SOLAR CELLS BASED ONCH3NH3SnI3 基于ch3nh3sni3的环保太阳能电池性能模拟

Eurasian Physical Technical Journal Pub Date : 2022-06-15 DOI: 10.31489/2022no2/58-64

Z. Omarova

{"title":"PERFORMANCE SIMULATION OF ECO-FRIENDLY SOLAR CELLS BASED ONCH3NH3SnI3","authors":"Z. Omarova","doi":"10.31489/2022no2/58-64","DOIUrl":"https://doi.org/10.31489/2022no2/58-64","url":null,"abstract":"Large-scale deployment of the perovskite photovoltaic technology using such high-performance materials as СH3NH3PbI3may face serious environmental issuesin the future. Implementation of perovskite solar cellbased on Sncouldbe an alternative solution for commercialisation. This paperpresents the results of a theoretical study of a lead-free, environmentally-friendlyphotovoltaic cellusing СH3NH3SnI3as a light-absorbing layer. The characteristics of a photovoltaic cell based on perovskite were modelled using the SCAPS-1D program. Various thicknesses of the absorbing layer were analysed,and an optimised device structure is proposed,demonstratinga high power conversionefficiencyof up to 28% at ambient temperature. The analysis of the thicknesses of the СH3NH3SnI3absorbing layer revealedthat at a thickness of 500 nm, performance is demonstrated with an efficiencyof 27.41 %, a fill factor of 85.92 %, a short circuit current density of 32.60 mA/cm2and an open-circuit voltage of 0.98 V. The obtained numerical results indicate that the СH3NH3SnI3absorbing layer may be a viable replacement forthe standard materials and may form the basis of a highly efficient technology of the environmentally-friendlyperovskite solar cells.","PeriodicalId":11789,"journal":{"name":"Eurasian Physical Technical Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43599679","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

ELECTROPHYSICAL PROPERTIES OF NEW NANOSTRUCTURED COPPER-ZINC MANGANITE OF LANTHANUM AND MAGNESIUM 新型纳米结构镧镁铜锌锰矿的电物理性质

Eurasian Physical Technical Journal Pub Date : 2022-06-15 DOI: 10.31489/2022no2/42-47

B. K. Kasenov

引用次数: 0

RAY PHASE AND MICROSTRUCTURAL ANALYSIS OFHARDENING COATINGS OBTAINED BYSELF-PROPAGATING HIGH-TEMPERATURE SYNTHESIS IN COMBINATION WITH HEATING OFA MIXTURE OF 𝑨𝒍+𝑩𝟐𝑶𝟑BASED ON HIGH-FREQUENCY CURRENT TREATMENT 高频电流处理下，结合𝑨<s:2> +𝑩<e:2> /𝑶𝟑based混合物加热的自传播高温合成硬化涂层的射线物相及显微组织分析

Eurasian Physical Technical Journal Pub Date : 2022-06-15 DOI: 10.31489/2022no2/6-12

A. Ishkov

{"title":"RAY PHASE AND MICROSTRUCTURAL ANALYSIS OFHARDENING COATINGS OBTAINED BYSELF-PROPAGATING HIGH-TEMPERATURE SYNTHESIS IN COMBINATION WITH HEATING OFA MIXTURE OF 𝑨𝒍+𝑩𝟐𝑶𝟑BASED ON HIGH-FREQUENCY CURRENT TREATMENT","authors":"A. Ishkov","doi":"10.31489/2022no2/6-12","DOIUrl":"https://doi.org/10.31489/2022no2/6-12","url":null,"abstract":"The paper describes the results of studies of hardening boride coatings obtained during the implementation of the process of self-propagating high-temperature synthesis. These coatings were composite materials based on aluminum oxide and boron. The obtained coatings were subjected to X-ray phase and microstructural analysis, which showed the maincomponents of the resulting compositions and made it possible to assess the thickness and structure of the coating-base metal transition area. The different content of silicon and iron makes it possible to assess the occurrence of surface chemical and metallurgical processes during self-propagating high-temperature synthesis when heating of the base mixture samples on high-frequency current treatment. The expediency of using high-frequency current treatment in combination with the process of self-propagating high-temperature synthesis for better-quality spattering of the hardening coating is shown. The appearance of two areas in the coating with different thickness and structure of the coating is established.","PeriodicalId":11789,"journal":{"name":"Eurasian Physical Technical Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49053306","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

SPECTRAL OBSERVATIONS OF GEOSTATIONARY SATELLITES 地球静止卫星的光谱观测

Eurasian Physical Technical Journal Pub Date : 2022-06-15 DOI: 10.31489/2022no2/93-100

A. Serebryanskiy

引用次数: 0

SPECTRAL DEPENDENCIES OF MAGNETOOPTICAL EFFECTS IN MAGNETIC FLUIDS 磁流体中磁光效应的光谱依赖性

Eurasian Physical Technical Journal Pub Date : 2022-06-15 DOI: 10.31489/2022no2/86-92

C. Yerin

引用次数: 2

DEVELOPMENT AND RESEARCH OF THE TOPOLOGY OF COOLING BAFFLES FOR BLADES OF THE AXIAL CARBON DIOXIDE TURBINES 轴流式二氧化碳涡轮机叶片冷却挡板拓扑结构的研制

Eurasian Physical Technical Journal Pub Date : 2022-06-15 DOI: 10.31489/2022no2/48-57

I. Komarov

{"title":"DEVELOPMENT AND RESEARCH OF THE TOPOLOGY OF COOLING BAFFLES FOR BLADES OF THE AXIAL CARBON DIOXIDE TURBINES","authors":"I. Komarov","doi":"10.31489/2022no2/48-57","DOIUrl":"https://doi.org/10.31489/2022no2/48-57","url":null,"abstract":"Currently, there is an increase in average annual temperature and climate change across the various continents. Carbon dioxide emissions from energy facilities contributed to this condition. Implementation of oxy-fuel cycles is a promising solution for reducing carbon dioxide emissions from the energy sector. To date, the most efficient oxy-fuel cycle is the Allam cycle. In this cycle supercritical carbon dioxide acts as a working fluid of the cycle, wherein СО2’s temperature upstream of the turbine is 1,150 °С and the pressure is 30 MPa. Due to the high temperature of the working fluid, it is necessary to cool first stages of the carbon dioxide turbine. The feature of considered cooling system in this turbine is that carbon dioxide being used as a refrigerant too. This paper investigated two topologies of convective cooling systems in the carbon dioxide turbine’s nozzle blade as well as considers an option for increasing the intensity of heatexchange through the use of helical ribbing in the cylindrical cooling baffle. Numerical simulation involving the ANSYS software package was performed for two topologies of the cooling baffles arrangement in the nozzle blade body: configuration 1 -with 17 baffles of 1 mm diameter, configuration 2 -with three baffles of the blade profile shape. Configuration 1 proved to be more efficient: the Nusselt number has a value of 117, and average value of the heat transfer coefficient on the refrigerant side is 6,413 W/m2∙K. The effect of using helical ribbing in the cooling cylindrical baffle of the blade under study was investigated, which enabled to reduce the metal temperature by 54 °С on average and doubled the heat transfer coefficient.","PeriodicalId":11789,"journal":{"name":"Eurasian Physical Technical Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43325705","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

OCAL APPROACH TO IMPROVE THE AERODYNAMIC CHARACTERISTICS OF THE FINAL DRYING PROCESS 改进最终干燥过程空气动力学特性的局部方法

Eurasian Physical Technical Journal Pub Date : 2022-06-15 DOI: 10.31489/2022no2/65-70

T. Suprun

引用次数: 1