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Development and Generalization of the Method of Reflections in Problems of Electrostatics and Thermal Conductivity of Plane-Layered Media 平面介质的静电和导热问题中反射法的发展和推广
IF 1.1 4区 物理与天体物理
Technical Physics Pub Date : 2024-09-27 DOI: 10.1134/S1063784224070351
A. B. Petrin
{"title":"Development and Generalization of the Method of Reflections in Problems of Electrostatics and Thermal Conductivity of Plane-Layered Media","authors":"A. B. Petrin","doi":"10.1134/S1063784224070351","DOIUrl":"10.1134/S1063784224070351","url":null,"abstract":"<p>The method of mirror reflections of electrostatics for a point charge located next to a plane-layered medium consisting of a single film on a dielectric half-space is formulated. The method is generalized to the case of an arbitrary system of charges. The proposed approach is applied to mathematically similar problems of electrostatics and stationary heat conduction of plane-layered media. In particular, the problems of finding distributions of the electrostatic potential around a conducting sphere, an ellipsoid of revolution and a drop-shaped body located near the dielectric film on the dielectric half-space. It is shown how to apply the results obtained for electrostatic problems to similar problems of finding the temperature distribution of uniformly heated bodies of the same geometry located near a heat-conducting film in a heat-conducting half-space.</p>","PeriodicalId":783,"journal":{"name":"Technical Physics","volume":"69 7","pages":"2079 - 2092"},"PeriodicalIF":1.1,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142414670","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
Integral Estimating an Impact Peril by Sequence of Ultra-Wideband Electromagnetic Pulses on Human Organism 综合估算超宽带电磁脉冲序列对人体的影响危险性
IF 1.1 4区 物理与天体物理
Technical Physics Pub Date : 2024-09-27 DOI: 10.1134/S1063784224070491
V. G. Usychenko, L. N. Sorokin
{"title":"Integral Estimating an Impact Peril by Sequence of Ultra-Wideband Electromagnetic Pulses on Human Organism","authors":"V. G. Usychenko,&nbsp;L. N. Sorokin","doi":"10.1134/S1063784224070491","DOIUrl":"10.1134/S1063784224070491","url":null,"abstract":"<p>Impact peril for warm-blooded organisms produced by a sequence of ultra-wideband electromagnetic sub-nanosecond pulses, used in various scientific and technological applications, is assessed by calculation methods of radiophysics and classical mechanics. Threshold values of the sequence parameters whose long time excess can be perilous for human have been determined.</p>","PeriodicalId":783,"journal":{"name":"Technical Physics","volume":"69 7","pages":"2170 - 2174"},"PeriodicalIF":1.1,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142414513","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
Strengthening Polycrystalline Ice with SiO2 Nanoparticles 用二氧化硅纳米颗粒强化多晶硅冰
IF 1.1 4区 物理与天体物理
Technical Physics Pub Date : 2024-09-27 DOI: 10.1134/S1063784224070144
Yu. I. Golovin, A. A. Samodurov, V. V. Rodaev, A. I. Tyurin, D. Yu. Golovin, S. S. Razlivalova, V. M. Buznik
{"title":"Strengthening Polycrystalline Ice with SiO2 Nanoparticles","authors":"Yu. I. Golovin,&nbsp;A. A. Samodurov,&nbsp;V. V. Rodaev,&nbsp;A. I. Tyurin,&nbsp;D. Yu. Golovin,&nbsp;S. S. Razlivalova,&nbsp;V. M. Buznik","doi":"10.1134/S1063784224070144","DOIUrl":"10.1134/S1063784224070144","url":null,"abstract":"<p>The paper presents the results of ice strengthening by means of ultrafme silica nanoparticles introduced to distilled water prior to its crystallization. Stable SiO<sub>2</sub> particles suspensions with concentrations ranging from 0.003 to 5 wt % have been prepared, and nanoparticles size distribution and zeta potential have been monitored in them. Both values remain almost constant for a week. Concentration dependences of maximal stress, Young’s modulus and inelastic deformation at and after reaching peak stress in uniaxial compression test have been studied. The highest rate of change with the particles concentration for these properties is between 0.01 and 1 wt % while beyond the above range the concentration sensitivity is much weaker. The strongest effect of silica concentration is on inelastic deformation, and the weakest effect is on Young’s modulus. Concentration sensitivity of the properties has been estimated by the power index of the best fitted power function for each of the property. Dependence of strength upon average grain size, that diminishes sixfold with growing concentration, is well approximated by power function also, but with negative power index –1/2. Additive constant in this dependence is found to be much lower than the strength of large grain pure ice and is close to zero within experiment accuracy. Hence, the strength of studied polycrystalline ice and ice composites is limited by the nucleation and subsequent propagation of Griffiths cracks with characteristic length proportional to average size of ice grain.</p>","PeriodicalId":783,"journal":{"name":"Technical Physics","volume":"69 7","pages":"1956 - 1966"},"PeriodicalIF":1.1,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142414666","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
Control of Fluid Flow Movement in Porous Medium with NMR-Relaxometry Method 用核磁共振再axometry 方法控制多孔介质中的流体流动
IF 1.1 4区 物理与天体物理
Technical Physics Pub Date : 2024-09-27 DOI: 10.1134/S1063784224070260
V. V. Maikov, S. V. Zhakov, I. V. Byzov, A. A. Mysik
{"title":"Control of Fluid Flow Movement in Porous Medium with NMR-Relaxometry Method","authors":"V. V. Maikov,&nbsp;S. V. Zhakov,&nbsp;I. V. Byzov,&nbsp;A. A. Mysik","doi":"10.1134/S1063784224070260","DOIUrl":"10.1134/S1063784224070260","url":null,"abstract":"<p>The possibility of fixing velocities of fluid motion in model porous medium (glass beads) by measuring the transverse relaxation time <i>T</i><sub>2</sub> by spin echo method is shown. The magnetic field gradient arising due to the difference in the magnetic permeability of the fluid and the porous medium causes a decrease in the average time <i>T</i><sub>2</sub>, which makes it possible to fix the fluid motion in the absence of an external magnetic field gradient. The addition of magnetic nanoparticles to the fluid under study increases the dependence of <i>T</i><sub>2</sub> on fluid velocity and increases the sensitivity in determining the permeability of porous medium by NMR-relaxometry.</p>","PeriodicalId":783,"journal":{"name":"Technical Physics","volume":"69 7","pages":"2033 - 2036"},"PeriodicalIF":1.1,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142414371","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
Low-Temperature Radiation-Induced Conductivity of Polystyrene under the Action of Low-Energy Electrons 低能电子作用下聚苯乙烯的低温辐射诱导电导率
IF 1.1 4区 物理与天体物理
Technical Physics Pub Date : 2024-09-27 DOI: 10.1134/S1063784224070326
I. R. Mullakhmetov, V. S. Saenko, A. P. Tyutnev, E. D. Pozhidaev
{"title":"Low-Temperature Radiation-Induced Conductivity of Polystyrene under the Action of Low-Energy Electrons","authors":"I. R. Mullakhmetov,&nbsp;V. S. Saenko,&nbsp;A. P. Tyutnev,&nbsp;E. D. Pozhidaev","doi":"10.1134/S1063784224070326","DOIUrl":"10.1134/S1063784224070326","url":null,"abstract":"<p>A technique has been developed and, for the first time, sufficiently complete data on the radiation-induced conductivity (RIC) of polystyrene (PS) at a temperature of 79 K, close to the boiling point of liquid nitrogen (77 K). RIC has been studied under pulsed and continuous exposure to electrons with an energy of 50 keV. It is shown that the RIC of PS at a temperature of 79 K, as well as at room temperature, determined by the sum of two components: prompt and delayed. Both components at 79 K are much smaller than at 298 K. The total signal falls off by a factor of 40, while the delayed component falls off by a factor of almost 200, and the prompt component dominant in the RIC signal. The possibility of the occurrence of electrostatic discharges (ESD) in PS with decreasing temperature was studied. It has been shown that PS, which is capable of resisting the occurrence of ESD at room temperature, at 79 K passes into the category of materials in which ESD is possible.</p>","PeriodicalId":783,"journal":{"name":"Technical Physics","volume":"69 7","pages":"2066 - 2070"},"PeriodicalIF":1.1,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142414382","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
In Situ Probe Measurements of Plasma Parameters during the Deposition of Boron Coatings by the Magnetron Method 磁控管法沉积硼涂层过程中等离子体参数的现场探针测量
IF 1.1 4区 物理与天体物理
Technical Physics Pub Date : 2024-09-27 DOI: 10.1134/S1063784224070156
V. I. Gushenets, A. S. Bugaev, A. V. Vizir, E. M. Oks, A. G. Nikolaev, G. Yu. Yushkov
{"title":"In Situ Probe Measurements of Plasma Parameters during the Deposition of Boron Coatings by the Magnetron Method","authors":"V. I. Gushenets,&nbsp;A. S. Bugaev,&nbsp;A. V. Vizir,&nbsp;E. M. Oks,&nbsp;A. G. Nikolaev,&nbsp;G. Yu. Yushkov","doi":"10.1134/S1063784224070156","DOIUrl":"10.1134/S1063784224070156","url":null,"abstract":"<p>The features of the probe technique are described and the results of measuring the parameters of plasma generated by a planar magnetron sputtering system with a pure boron target during coating deposition are presented. A feature of probe measurements was the use of heating the collecting surface of a single Langmuir probe. Heating led to a decrease in the electrical resistance of the boron film on the surface, which made it possible to carry out in situ probe measurements of the magnetron discharge plasma parameters during the entire process of boron coating.</p>","PeriodicalId":783,"journal":{"name":"Technical Physics","volume":"69 7","pages":"1967 - 1972"},"PeriodicalIF":1.1,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142414524","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 Radiation Exposure on the Magnetic Properties of Ferromagnetic/IrMn Films with Exchange Bias 辐照对具有交换偏压的铁磁性/铁锰薄膜磁性能的影响
IF 1.1 4区 物理与天体物理
Technical Physics Pub Date : 2024-09-27 DOI: 10.1134/S1063784224070235
D. O. Krivulin, I. Yu. Pashenkin, R. V. Gorev, P. A. Yunin, M. V. Sapozhnikov, A. V. Grunin, S. A. Zakharova, V. N. Leontiev
{"title":"Influence of Radiation Exposure on the Magnetic Properties of Ferromagnetic/IrMn Films with Exchange Bias","authors":"D. O. Krivulin,&nbsp;I. Yu. Pashenkin,&nbsp;R. V. Gorev,&nbsp;P. A. Yunin,&nbsp;M. V. Sapozhnikov,&nbsp;A. V. Grunin,&nbsp;S. A. Zakharova,&nbsp;V. N. Leontiev","doi":"10.1134/S1063784224070235","DOIUrl":"10.1134/S1063784224070235","url":null,"abstract":"<p>In this work, the effect of the action of gamma quanta and neutrons on the magnetic properties of Ta/feromagnet/IrMn/Ta bilayer films with an exchange bias of the hysteresis loop is studied. The samples were fabricated by magnetron sputtering, and their structure was studied by small-angle X-ray reflectometry and X-ray diffractometry. The measurement of the magnetic hysteresis loops of the irradiated and non-irradiated samples was carried out by the methods of magneto-optical Kerr magnetometry. As a result, the effect of broadening of the magnetic hysteresis loop after irradiation was found. The maximum broadening of the hysteresis loop was observed in the NiFe/IrMn film under neutron irradiation; in this case, the loop width increased by more than 2.5 times. No noticeable change in the field of the exchange bias of the hysteresis loops was observed in the entire range of radiation exposure.</p>","PeriodicalId":783,"journal":{"name":"Technical Physics","volume":"69 7","pages":"2014 - 2019"},"PeriodicalIF":1.1,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142414569","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
Application of Transmission Electron Microscopy for the Study of a Functional Nanoelement 应用透射电子显微镜研究功能纳米元素
IF 1.1 4区 物理与天体物理
Technical Physics Pub Date : 2024-09-27 DOI: 10.1134/S1063784224070363
K. E. Prikhodko, M. M. Dement’eva
{"title":"Application of Transmission Electron Microscopy for the Study of a Functional Nanoelement","authors":"K. E. Prikhodko,&nbsp;M. M. Dement’eva","doi":"10.1134/S1063784224070363","DOIUrl":"10.1134/S1063784224070363","url":null,"abstract":"<p>Using the focused ion beam probe method, cross-section sample of a single functional device of micron dimensions were cut out for STEM and TEM studies. The use of analytical methods of transmission electron microscopy made it possible to obtain accurate data on the geometric parameters of nanoscale functional devices, the phase and elemental composition of functional element material, as well as on the concentration of free electrons at the Fermi level in the nanoelement material.</p>","PeriodicalId":783,"journal":{"name":"Technical Physics","volume":"69 7","pages":"2093 - 2097"},"PeriodicalIF":1.1,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142414378","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
Architectonics of Zinc Oxide Nanorod Coatings for Adsorption Gas Sensors 用于吸附式气体传感器的氧化锌纳米棒涂层结构学
IF 1.1 4区 物理与天体物理
Technical Physics Pub Date : 2024-09-27 DOI: 10.1134/S1063784224070387
A. A. Ryabko, S. S. Nalimova, N. V. Permyakov, A. A. Bobkov, A. I. Maksimov, V. M. Kondratev, K. P. Kotlyar, M. K. Ovezov, A. S. Komolov, E. F. Lazneva, V. A. Moshnikov, A. N. Aleshin
{"title":"Architectonics of Zinc Oxide Nanorod Coatings for Adsorption Gas Sensors","authors":"A. A. Ryabko,&nbsp;S. S. Nalimova,&nbsp;N. V. Permyakov,&nbsp;A. A. Bobkov,&nbsp;A. I. Maksimov,&nbsp;V. M. Kondratev,&nbsp;K. P. Kotlyar,&nbsp;M. K. Ovezov,&nbsp;A. S. Komolov,&nbsp;E. F. Lazneva,&nbsp;V. A. Moshnikov,&nbsp;A. N. Aleshin","doi":"10.1134/S1063784224070387","DOIUrl":"10.1134/S1063784224070387","url":null,"abstract":"<p>A method for the formation of nanostractured coatings from ZnO nanorods for use in adsorption gas sensors is presented. It has been shown that ultrasonic spray pyrolysis provides the formation of local growth centers for the formation of ZnO nanorods by the low-temperature hydrothermal synthesis. The obtained ZnO nanorods with a small diameter demonstrate a high concentration of oxygen vacancies in the near-surface region of the nanorods and a high surface concentration of hydroxyl groups. An additional method is proposed for testing seed layers by resistance using a liquid probe based on an indium-gallium melt without the need to apply top contacts. The presented technique is suitable for mass production of sensor coatings. The obtained nanostructured coatings from ZnO nanorods demonstrate a high gas analytical response.</p>","PeriodicalId":783,"journal":{"name":"Technical Physics","volume":"69 7","pages":"2103 - 2110"},"PeriodicalIF":1.1,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142414379","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
Calculation of the Component Composition of the Surface Layers of Titanium Carbide Sputtered with Light Ions 计算轻离子溅射碳化钛表面层的成分组成
IF 1.1 4区 物理与天体物理
Technical Physics Pub Date : 2024-09-27 DOI: 10.1134/S1063784224070296
V. V. Manukhin
{"title":"Calculation of the Component Composition of the Surface Layers of Titanium Carbide Sputtered with Light Ions","authors":"V. V. Manukhin","doi":"10.1134/S1063784224070296","DOIUrl":"10.1134/S1063784224070296","url":null,"abstract":"<p>On the basis of the previously tested model of sputtering binary layered inhomogeneous targets with light ions, a method for calculating the component composition of the surface layers of titanium carbide under stationary (stoichiometric) sputtering with light ions is proposed. The results of calculations of the component composition of the altered surface layer of titanium carbide are given in comparison with experimental data and the results of computer simulation. The proposed method for calculating the component composition based on the model of sputtering binary layered inhomogeneous targets made it possible to estimate the thickness of the changed surface layer. The proposed calculation method allows developing a technology for creating titanium carbide surfaces with a given ratio of components.</p>","PeriodicalId":783,"journal":{"name":"Technical Physics","volume":"69 7","pages":"2049 - 2052"},"PeriodicalIF":1.1,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142414498","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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