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Analytical and Numerical Modelling of a Buckling in a Plastic Regime of a Homogeneous Console with Symmetrical Cross Section 具有对称截面的均质控制台塑性状态下的屈曲分析与数值建模
IF 1.1 4区 物理与天体物理
Technical Physics Pub Date : 2024-09-26 DOI: 10.1134/S1063784224060069
V. V. Chistyakov
{"title":"Analytical and Numerical Modelling of a Buckling in a Plastic Regime of a Homogeneous Console with Symmetrical Cross Section","authors":"V. V. Chistyakov","doi":"10.1134/S1063784224060069","DOIUrl":"10.1134/S1063784224060069","url":null,"abstract":"<p>The method of numerical-analytical modeling using Maple 18 of the strong buckling of a uniform console with a symmetrical cross-section is presented. The range of plastic deformations in a materials with conditional yield strength (CYS) is studied. Standard profiles and sections made of low-carbon steel, titanium, polyethylene etc. were investigated. Were found and compared with the proper Eulerian values the critical loads of <i>F</i><sub>cr</sub>, <i>N</i>, the shape of buckled console <i>y</i>(<i>z</i>). The quasi-identity of the latter is established for the same slope <i>p</i><sub><i>f</i></sub> = <i>dy</i>/<i>dz</i> near the free console end. The method can be applied in robotics, structural mechanics, medical prosthetics, etc. where the materials been used with relatively high Young’s modulus and low the CYS.</p>","PeriodicalId":783,"journal":{"name":"Technical Physics","volume":"69 6","pages":"1514 - 1517"},"PeriodicalIF":1.1,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142414129","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Systems and Technologies Based on Nonlinear Transmission Lines with Ferrite (Review) 基于铁氧体非线性传输线的系统和技术（综述）
IF 1.1 4区 物理与天体物理
Technical Physics Pub Date : 2024-09-26 DOI: 10.1134/S1063784224060355
P. V. Priputnev, I. V. Romanchenko, V. V. Rostov
{"title":"Systems and Technologies Based on Nonlinear Transmission Lines with Ferrite (Review)","authors":"P. V. Priputnev,&nbsp;I. V. Romanchenko,&nbsp;V. V. Rostov","doi":"10.1134/S1063784224060355","DOIUrl":"10.1134/S1063784224060355","url":null,"abstract":"<p>Nonlinear transmission lines with ferrite have been actively developed and studied for about two decades. At the same time, the first works on this topic date back to the middle of the last century. Nonlinear transmission lines with ferrite find their application in various problems of electrophysics, with the greatest application being found in the problems of pulse sharpening, as delay lines and generators of highpower pulses of microwave radiation. The main scientific and technical results of the development of technologies of nonlinear transmission lines with ferrite are presented in chronological order, starting from lines for sharpening the fronts of voltage pulses, ending with multichannel microwave sources based on them.</p>","PeriodicalId":783,"journal":{"name":"Technical Physics","volume":"69 6","pages":"1730 - 1741"},"PeriodicalIF":1.1,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142414203","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Influence of the Homobuffer Layer on the Morphology, Microstructure, and Hardness of Al/Si(111) Films 同质缓冲层对 Al/Si(111)薄膜形态、微观结构和硬度的影响
IF 1.1 4区 物理与天体物理
Technical Physics Pub Date : 2024-09-26 DOI: 10.1134/S1063784224060239
A. A. Lomov, D. M. Zakharov, M. A. Tarasov, A. M. Chekushkin, A. A. Tatarintsev, D. A. Kiselev, T. S. Ilyina, A. E. Seleznev
{"title":"Influence of the Homobuffer Layer on the Morphology, Microstructure, and Hardness of Al/Si(111) Films","authors":"A. A. Lomov,&nbsp;D. M. Zakharov,&nbsp;M. A. Tarasov,&nbsp;A. M. Chekushkin,&nbsp;A. A. Tatarintsev,&nbsp;D. A. Kiselev,&nbsp;T. S. Ilyina,&nbsp;A. E. Seleznev","doi":"10.1134/S1063784224060239","DOIUrl":"10.1134/S1063784224060239","url":null,"abstract":"<p>The results of complementary studies of Al films grown by magnetron sputtering at room temperature are presented. The films were obtained on standard Si(111) substrates without and with a ∼20 nm aluminum (homobuffer) layer preliminarily grown on their surface at 400°C. The interdependence of the morphology, microstructure, and hardness of Al films on the state of the substrate surface was studied by the HRXRR, XRD, SEM, EDS, AFM, and Nano Indenter (ASTM) methods. It is shown that the formation of homobuffer layers on the substrate surface makes it possible to control the structural and mechanical properties of thin aluminum films.</p>","PeriodicalId":783,"journal":{"name":"Technical Physics","volume":"69 6","pages":"1636 - 1645"},"PeriodicalIF":1.1,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142414191","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Study of the Orbital Dynamics of Asteroid 2023 BU, which Made a Record Approach to the Earth 对创纪录接近地球的小行星 2023 BU 的轨道动力学研究
IF 1.1 4区 物理与天体物理
Technical Physics Pub Date : 2024-09-26 DOI: 10.1134/S1063784224060276
A. A. Martyusheva, A. V. Devyatkin, V. N. L’vov, D. L. Gorshanov, S. A. Rusov
{"title":"Study of the Orbital Dynamics of Asteroid 2023 BU, which Made a Record Approach to the Earth","authors":"A. A. Martyusheva,&nbsp;A. V. Devyatkin,&nbsp;V. N. L’vov,&nbsp;D. L. Gorshanov,&nbsp;S. A. Rusov","doi":"10.1134/S1063784224060276","DOIUrl":"10.1134/S1063784224060276","url":null,"abstract":"<p>As part of the Pulkovo program for the study of near-Earth objects, more than 1500 observations of asteroid 2023 BU, which was discovered at the very beginning of 2023 just a few days before its extremely close approach to the Earth at a distance of about 3<i>.</i>5 × 10<sup>6</sup> m from its surface, were made at the MTM-500M telescope. It was one of the closest encounters of an asteroid with the Earth ever recorded, which caught the attention of astronomers around the world. Based on the observations of this asteroid, its orbit was refined and the orbital evolution was studied. In addition, estimates of the influence of solar radiation pressure and the Yarkovsky effect were made, which is relevant due to the problem of asteroid and comet hazard.</p>","PeriodicalId":783,"journal":{"name":"Technical Physics","volume":"69 6","pages":"1676 - 1678"},"PeriodicalIF":1.1,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142414201","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Investigation of the Properties of Multilayer Mirrors Based on a Pair of Materials Mo/B4C 基于一对材料 Mo/B4C 的多层反射镜的特性研究
IF 1.1 4区 物理与天体物理
Technical Physics Pub Date : 2024-09-26 DOI: 10.1134/S1063784224060434
R. A. Shaposhnikov, S. A. Garakhin, K. V. Durov, V. N. Polkovnikov, N. I. Chkhalo
{"title":"Investigation of the Properties of Multilayer Mirrors Based on a Pair of Materials Mo/B4C","authors":"R. A. Shaposhnikov,&nbsp;S. A. Garakhin,&nbsp;K. V. Durov,&nbsp;V. N. Polkovnikov,&nbsp;N. I. Chkhalo","doi":"10.1134/S1063784224060434","DOIUrl":"10.1134/S1063784224060434","url":null,"abstract":"<p>The properties of Mo/B<sub>4</sub>C multilayer X-ray mirrors with periods of 3<i>.</i>74–3<i>.</i>84 nm are studied in this work. The dependences of the transmission band, reflection coefficient and the magnitude of internal stresses in mirrors on the ratio of material thicknesses in the period were investigated. The results of a study of the effect of thermal annealing on the structural parameters and reflective characteristics of mirrors are also presented in the paper.</p>","PeriodicalId":783,"journal":{"name":"Technical Physics","volume":"69 6","pages":"1803 - 1807"},"PeriodicalIF":1.1,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142414202","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Determining the Directionality of Coupling between Time Series Extracted from Biological Data of Rats by Modeling the Phase Dynamics of Periodic Processes 通过建立周期性过程的相位动力学模型确定从大鼠生物数据中提取的时间序列之间耦合的方向性
IF 1.1 4区 物理与天体物理
Technical Physics Pub Date : 2024-09-26 DOI: 10.1134/S1063784224060094
O. E. Dick, A. L. Glazov
{"title":"Determining the Directionality of Coupling between Time Series Extracted from Biological Data of Rats by Modeling the Phase Dynamics of Periodic Processes","authors":"O. E. Dick,&nbsp;A. L. Glazov","doi":"10.1134/S1063784224060094","DOIUrl":"10.1134/S1063784224060094","url":null,"abstract":"<p>The method of identifying the direction of the coupling between oscillators based on the simulation of phase dynamics of weakly coupled and weakly noisy periodic processes is used to determine the direction of the coupling between time series extracted from biological signals. Neuronal activity, arterial pressure and respiratory rate of anesthetized rats were used as initial data. Various options for the direction of the coupling between the analyzed time series were revealed.</p>","PeriodicalId":783,"journal":{"name":"Technical Physics","volume":"69 6","pages":"1531 - 1539"},"PeriodicalIF":1.1,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142414205","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
SOT-MRAM Elements Based on Spin Hall Effect: Macrospin Model of Two-Step Switching Control 基于自旋霍尔效应的 SOT-MRAM 元件：两步开关控制的宏旋模型
IF 1.1 4区 物理与天体物理
Technical Physics Pub Date : 2024-09-26 DOI: 10.1134/S106378422406032X
N. V. Ostrovskaya, V. A. Skidanov, Yu. A. Iusipova
{"title":"SOT-MRAM Elements Based on Spin Hall Effect: Macrospin Model of Two-Step Switching Control","authors":"N. V. Ostrovskaya,&nbsp;V. A. Skidanov,&nbsp;Yu. A. Iusipova","doi":"10.1134/S106378422406032X","DOIUrl":"10.1134/S106378422406032X","url":null,"abstract":"<p>The article presents the results of a qualitative study of the model of a modern magnetic memory cell, in which the spin Hall effect is used for recording. Cells of square cross-section with longitudinal anisotropy of the active layer are considered. Based on the Landau-Lifshitz-Gilbert vector equation, a mathematical model for controlling the process of writing zero and one into a cell is constructed. In the approximation of a uniform distribution of magnetization, a system of equations is derived that describes the dynamics of magnetization under the action of a magnetic field and spin current. The parameters of the qualitatively equivalent dynamics of the model are determined. It has been established that at zero currents and fields in both cases there are two main stable equilibrium positions. These equilibria, depending on the mutual orientation of the magnetization vector of the active and reference layers, correspond to zero and one, written in the cell. The transition from one cell state to another is described by solving a system of differential equations. A bifurcation diagram of a dynamical system in the variables “field–current” is constructed. It is shown that with a given configuration of the memory element, external influences transfer the magnetization to an intermediate state in the plane of the free layer, which, when the current and field are turned off, leads to writing zero or one to the memory cell. The critical switching current is estimated as a function of the applied external magnetic field.</p>","PeriodicalId":783,"journal":{"name":"Technical Physics","volume":"69 6","pages":"1708 - 1716"},"PeriodicalIF":1.1,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142414020","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Abnormal Electrical Resistivity of Co−Fe−Si−B−Nb−R Alloys in Amorphous and Crystalline States 非晶态和结晶态 Co-Fe-Si-B-Nb-R 合金的异常电阻率
IF 1.1 4区 物理与天体物理
Technical Physics Pub Date : 2024-09-26 DOI: 10.1134/S1063784224060446
V. E. Sidorov, B. A. Rusanov, S. A. Petrova, L. D. Son, V. I. Lad’yanov
{"title":"Abnormal Electrical Resistivity of Co−Fe−Si−B−Nb−R Alloys in Amorphous and Crystalline States","authors":"V. E. Sidorov,&nbsp;B. A. Rusanov,&nbsp;S. A. Petrova,&nbsp;L. D. Son,&nbsp;V. I. Lad’yanov","doi":"10.1134/S1063784224060446","DOIUrl":"10.1134/S1063784224060446","url":null,"abstract":"<p>Electrical resistivity of Co<sub>48</sub>Fe<sub>25</sub>Si<sub>4</sub>B<sub>19</sub>Nb<sub>4</sub> amorphous alloy and with small additions of rare-earth metals (= Nd, Sm, Tb, Yb) was studied using the AC four-probe method. It was found that these alloys have a specific behavior of electrical resistivity after crystallization-temperature dependences of resistivity at cooling are non-linear and can be fitted as ln <i>R ~ T</i><sup>−1<i>/</i>4</sup>.</p>","PeriodicalId":783,"journal":{"name":"Technical Physics","volume":"69 6","pages":"1808 - 1812"},"PeriodicalIF":1.1,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142414021","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Theory of Resonant Tunneling of Charge Carriers within the Framework of the Green’s Function Method and the Biorthogonal Formalism 在格林函数法和双正交形式框架内的电荷载流子共振隧道理论
IF 1.1 4区 物理与天体物理
Technical Physics Pub Date : 2024-09-26 DOI: 10.1134/S1063784224060471
M. V. Zakharchenko, G. F. Glinskii
{"title":"Theory of Resonant Tunneling of Charge Carriers within the Framework of the Green’s Function Method and the Biorthogonal Formalism","authors":"M. V. Zakharchenko,&nbsp;G. F. Glinskii","doi":"10.1134/S1063784224060471","DOIUrl":"10.1134/S1063784224060471","url":null,"abstract":"<p>A general approach to the analysis of resonant tunneling and scattering effects is developed within the framework of the Green’s functions method. The proposed mathematical apparatus is based on the biorthogonal formalism of quantum theory that allows one to describe systems with non-Hermitian Hamiltonians. Such operators are typical for problems wherein particle is supposed to leave the physical system and go to infinity. The stationary Schrödinger equation with a particle source is considered in abstract operator form. The solution of that problem is expressed in a general form in terms of the corresponding Green’s operator. Transmission coefficients and their dependences on the particle energy are determined for a single rectangular potential barrier and a double Gaussian barrier. The result of numerical calculation for a single rectangular barrier is compared with the well-known analytical solution of this problem. The proposed method makes it possible to analyze the particles tunneling and scattering in structures with an arbitrary number and shape of potential barriers with high accuracy.</p>","PeriodicalId":783,"journal":{"name":"Technical Physics","volume":"69 6","pages":"1832 - 1836"},"PeriodicalIF":1.1,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142414241","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effect of an External Alternating Electric Field on the Efficiency of a Superconducting Single-Photon Detector 外部交变电场对超导单光子探测器效率的影响
IF 1.1 4区 物理与天体物理
Technical Physics Pub Date : 2024-09-26 DOI: 10.1134/S1063784224060422
K. O. Sedykh, E. Suleimen, M. I. Svyatodukh, A. Podlesnyy, V. V. Kovalyuk, P. P. An, N. S. Kaurova, I. N. Florya, K. E. Lakhmanskiy, G. N. Goltsman
{"title":"Effect of an External Alternating Electric Field on the Efficiency of a Superconducting Single-Photon Detector","authors":"K. O. Sedykh,&nbsp;E. Suleimen,&nbsp;M. I. Svyatodukh,&nbsp;A. Podlesnyy,&nbsp;V. V. Kovalyuk,&nbsp;P. P. An,&nbsp;N. S. Kaurova,&nbsp;I. N. Florya,&nbsp;K. E. Lakhmanskiy,&nbsp;G. N. Goltsman","doi":"10.1134/S1063784224060422","DOIUrl":"10.1134/S1063784224060422","url":null,"abstract":"<p>In this paper, model of a surface ion trap for a scalable quantum computer with an RF electrode and a superconducting single-photon detector was studied with an operating temperature of 4 K. The amplitude range of the radio frequency signal varied from 10 to 800 mV at frequencies from 5 to 20 MHz. The effect of the induced external RF field of the trap on the dark and bright count rate of a single-photon detector is studied. The results of this work are important in the design of surface ion traps with planar single-photon detectors.</p>","PeriodicalId":783,"journal":{"name":"Technical Physics","volume":"69 6","pages":"1797 - 1802"},"PeriodicalIF":1.1,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142414003","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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