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Bulletin of the Russian Academy of Sciences: Physics最新文献

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Nonlinear Effects in an Ensemble of Anharmonic Oscillators 非谐振子系综中的非线性效应
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2025-01-16 DOI: 10.1134/S1062873824708407
A. M. Basharov
{"title":"Nonlinear Effects in an Ensemble of Anharmonic Oscillators","authors":"A. M. Basharov","doi":"10.1134/S1062873824708407","DOIUrl":"10.1134/S1062873824708407","url":null,"abstract":"<p>The author considers three types of resonance of a classical coherent electromagnetic wave with the same carrier frequency as a quantum anharmonic oscillator, based on algebraic perturbation theory. The corresponding effective operators of the dipole moment of the anharmonic oscillator are obtained, allowing the polarization of the excited medium under the considered resonance conditions to be calculated. Some possibilities are established for the creation of nonlinear effects.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"88 12","pages":"1881 - 1887"},"PeriodicalIF":0.48,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142994934","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
Magneto-Optic Faraday Effect of Magnetic Fluids Based on MFe2O4 (M = Fe, Ni, Co) Particles 基于MFe2O4 （M = Fe, Ni, Co）粒子的磁流体的磁光法拉第效应
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2025-01-16 DOI: 10.1134/S1062873824708687
O. K. Kuvandikov, S. E. Kirgizov
{"title":"Magneto-Optic Faraday Effect of Magnetic Fluids Based on MFe2O4 (M = Fe, Ni, Co) Particles","authors":"O. K. Kuvandikov,&nbsp;S. E. Kirgizov","doi":"10.1134/S1062873824708687","DOIUrl":"10.1134/S1062873824708687","url":null,"abstract":"<p>A study is performed of the magneto-optical Faraday effect of magnetic fluids based on MFe<sub>2</sub>O<sub>4</sub> particles (M = Fe, Ni, Co) in which sodium oleate is used as dense surfactant. This allows Faraday rotation to be obtained at a low volume concentrations of these particles (0.25–0.5%). Rotation depends linearly on the strength of the magnetic field (500–1000 G), which is unsaturated up to 4000 G. The maximum effect is achieved for magnetic fluids based on CoFe<sub>2</sub>O<sub>4</sub>.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"88 12","pages":"2050 - 2054"},"PeriodicalIF":0.48,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142994940","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
Complex Remote Diagnostics of Defects in the Insulation of High-Voltage Equipment 高压设备绝缘缺陷的复杂远程诊断
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2025-01-16 DOI: 10.1134/S1062873824708614
V. A. Golenishchev-Kutuzov, A. V. Golenishchev-Kutuzov, A. V. Semennikov, R. I. Kalimullin, D. A. Ivanov
{"title":"Complex Remote Diagnostics of Defects in the Insulation of High-Voltage Equipment","authors":"V. A. Golenishchev-Kutuzov,&nbsp;A. V. Golenishchev-Kutuzov,&nbsp;A. V. Semennikov,&nbsp;R. I. Kalimullin,&nbsp;D. A. Ivanov","doi":"10.1134/S1062873824708614","DOIUrl":"10.1134/S1062873824708614","url":null,"abstract":"<p>A methodology and a system are developed for complex remote diagnostics of insulation elements of high-voltage equipment of substations and power transmission lines, including suspended and through-pass insulators and supports. The system is based on the principle of simultaneously measuring and subsequently analyzing characteristics of partial discharges with high-frequency (400–800 MHz) and acoustic (30 kHz) sensors. The system is used to examine more than 50 specimens of polymer (LC 70/35) and porcelain (IOS 110/400) insulators in their operating mode. Amplitude-phase diagrams of partial discharge parameters are obtained that can be used to determine the type and degree of influence a defect has on the insulation. Features of defects are studied for 35 and 110 kV electrical networks.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"88 12","pages":"2008 - 2015"},"PeriodicalIF":0.48,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142995105","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
Orientational Relaxation of Ferromagnetic Anisotropic Colloidal Particles in a Magnetic Fluid 磁性流体中铁磁各向异性胶体粒子的取向弛豫
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2025-01-16 DOI: 10.1134/S1062873824708602
Y. A. Filippova, O. A. Yakusheva, A. V. Papugaeva
{"title":"Orientational Relaxation of Ferromagnetic Anisotropic Colloidal Particles in a Magnetic Fluid","authors":"Y. A. Filippova,&nbsp;O. A. Yakusheva,&nbsp;A. V. Papugaeva","doi":"10.1134/S1062873824708602","DOIUrl":"10.1134/S1062873824708602","url":null,"abstract":"<p>Permalloy rod-shaped anisotropic nanoparticles have been used to study orientational relaxation in a polymethylsiloxane magnetic fluid. A magneto-rheological effect has been observed at different magnitudes and frequencies of the impact of a magnetic field, and the time of structural relaxation after removal of the field has been estimated.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"88 12","pages":"2002 - 2007"},"PeriodicalIF":0.48,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142995098","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
Analyzing the Possibility of Increasing the Randomness of Noise Using a Continuous Wavelet Transform, Based on a Sequence of Numbers Generated by an Optical Random Noise Generator 基于光学随机噪声发生器产生的数字序列，分析用连续小波变换增加噪声随机性的可能性
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2025-01-16 DOI: 10.1134/S1062873824708547
M. E. Sibgatullin, D. A. Mavkov, L. R. Gilyazov, N. M. Arslanov
{"title":"Analyzing the Possibility of Increasing the Randomness of Noise Using a Continuous Wavelet Transform, Based on a Sequence of Numbers Generated by an Optical Random Noise Generator","authors":"M. E. Sibgatullin,&nbsp;D. A. Mavkov,&nbsp;L. R. Gilyazov,&nbsp;N. M. Arslanov","doi":"10.1134/S1062873824708547","DOIUrl":"10.1134/S1062873824708547","url":null,"abstract":"<p>The authors investigate the possibility of controlling the parameters of random number sequences using a continuous wavelet transform. It is shown that changing the energy of the scales of the continuous wavelet transform can increase the probability of passing the NIST LongestRun, FFT, and Runs tests. The possibility of increasing the probability of passing tests is demonstrated for different sizes of the studied experimental sequence of random numbers.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"88 12","pages":"1966 - 1970"},"PeriodicalIF":0.48,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142995102","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
Effect of Detuning the Group Velocities of Optical Harmonics on the Reflection and Transmission of Radiation in an Active Periodic Medium 失谐光谐波群速度对有源周期介质中辐射反射和透射的影响
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2025-01-16 DOI: 10.1134/S1062873824708420
A. A. Kalinovich, I. G. Zakharova, T. M. Lysak
{"title":"Effect of Detuning the Group Velocities of Optical Harmonics on the Reflection and Transmission of Radiation in an Active Periodic Medium","authors":"A. A. Kalinovich,&nbsp;I. G. Zakharova,&nbsp;T. M. Lysak","doi":"10.1134/S1062873824708420","DOIUrl":"10.1134/S1062873824708420","url":null,"abstract":"<p>The authors study the effect detuning between the group velocities of two optical harmonics has on the reflection and transmission of radiation in a layered active quadratically nonlinear medium. The reflectance and transmittance at the fundamental and doubled frequencies are determined via numerical modeling. The soliton nature of energy transfer inside a medium is demonstrated.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"88 12","pages":"1895 - 1901"},"PeriodicalIF":0.48,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142994931","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
Capabilities of Optothermal Traps for the Spatial Ordering of Microscopic Objects 光热陷阱对微观物体空间排序的能力
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2025-01-16 DOI: 10.1134/S1062873824708389
A. M. Mayorova, S. P. Kotova, N. N. Losevsky, D. V. Prokopova, S. A. Samagin
{"title":"Capabilities of Optothermal Traps for the Spatial Ordering of Microscopic Objects","authors":"A. M. Mayorova,&nbsp;S. P. Kotova,&nbsp;N. N. Losevsky,&nbsp;D. V. Prokopova,&nbsp;S. A. Samagin","doi":"10.1134/S1062873824708389","DOIUrl":"10.1134/S1062873824708389","url":null,"abstract":"<p>Experimental results are presented on the formation of ordered structures of latex microparticles with diameters of 3 and 5 μm using arrays of point optothermal traps. The working area of the phase mask is divided into sub-elements to obtain the traps. A specific distribution of the phase delay of the prism (wedge) is specified for each trap.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"88 12","pages":"1869 - 1874"},"PeriodicalIF":0.48,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142994941","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
Using Scanning Probe Microscopy to Precisely Select Nanoparticles Based on Yb- and Er-Doped NaYF4 and YVO4 That Display Upconversion Luminescent Properties from an Ensemble with Displacement on Nanometer Scales and Angular Orientations 利用扫描探针显微镜精确选择基于Yb和er掺杂的NaYF4和YVO4的纳米颗粒，这些纳米颗粒在纳米尺度和角取向上显示出位移系综的上转换发光特性
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2025-01-16 DOI: 10.1134/S1062873824708560
A. P. Chuklanov, A. S. Morozova, Ye. O. Mityushkin, V. G. Nikiforov, N. I. Nurgagizov
{"title":"Using Scanning Probe Microscopy to Precisely Select Nanoparticles Based on Yb- and Er-Doped NaYF4 and YVO4 That Display Upconversion Luminescent Properties from an Ensemble with Displacement on Nanometer Scales and Angular Orientations","authors":"A. P. Chuklanov,&nbsp;A. S. Morozova,&nbsp;Ye. O. Mityushkin,&nbsp;V. G. Nikiforov,&nbsp;N. I. Nurgagizov","doi":"10.1134/S1062873824708560","DOIUrl":"10.1134/S1062873824708560","url":null,"abstract":"<p>It is shown that a scanning probe microscope allows precise manipulation of an ensemble of upconversion nanoparticles deposited uncontrollably on the surface of a glass substrate. The possibility of controlled movement of such particles over distances of several tens of micrometers is demonstrated, leaving several upconversion nanoparticles separated from others (or small conglomerates of them) on a surface with an area of ∼10<sup>4</sup> μm<sup>2</sup>. The system of marks on the substrate makes it easy to find such particles and perform a series of manipulations, including movements over submicrometer distances and rotation at a given angle of a single upconversion nanoparticle. The force of an individual upconversion nanoparticle’s adhesion to the surface of a substrate is estimated.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"88 12","pages":"1976 - 1981"},"PeriodicalIF":0.48,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142995099","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
Imprinting Upconversion Nanoparticles by Means of Scanning Probe Microscopy 扫描探针显微镜印迹上转换纳米颗粒的研究
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2025-01-16 DOI: 10.1134/S1062873824708559
A. P. Chuklanov, A. S. Morozova, Ye. O. Mityushkin, L. A. Nurtdinova, A. V. Leontyev, V. G. Nikiforov, N. I. Nurgagizov
{"title":"Imprinting Upconversion Nanoparticles by Means of Scanning Probe Microscopy","authors":"A. P. Chuklanov,&nbsp;A. S. Morozova,&nbsp;Ye. O. Mityushkin,&nbsp;L. A. Nurtdinova,&nbsp;A. V. Leontyev,&nbsp;V. G. Nikiforov,&nbsp;N. I. Nurgagizov","doi":"10.1134/S1062873824708559","DOIUrl":"10.1134/S1062873824708559","url":null,"abstract":"<p>The authors consider using upconversion fluoride nanoparticles of NaYF<sub>4</sub> doped with Yb<sup>3+</sup> and Er<sup>3+</sup> ions as ordered non-invasive hidden labels. At the first stage the synthesized upconversion fluoride nanoparticles have been deposited from the suspension onto the substrate with mechanical scratches used as large-scale markers. The scanning probe microscope is then used to move individual upconversion nanoparticles macroscopically significant distances and deposit them in a controlled manner onto a clean surface, thereby imprinting nanoobjects. The displacement and deposition process has been monitored using a conventional optical microscope. Luminescent signals from regularly placed labels have been recorded in an optical confocal microscope.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"88 12","pages":"1971 - 1975"},"PeriodicalIF":0.48,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142995101","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
Few-Cycle Two-Frequency Light Bullets with Phase and Group Velocity Detunings 具有相位和群速度失谐的少周期双频轻子弹
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2025-01-16 DOI: 10.1134/S1062873824708432
A. A. Kalinovich, K. V. Koshkin, M. V. Komissarova
{"title":"Few-Cycle Two-Frequency Light Bullets with Phase and Group Velocity Detunings","authors":"A. A. Kalinovich,&nbsp;K. V. Koshkin,&nbsp;M. V. Komissarova","doi":"10.1134/S1062873824708432","DOIUrl":"10.1134/S1062873824708432","url":null,"abstract":"<p>Numerical modeling is used to show the possibility of forming (2D + 1) short-period (3‒5 oscillations under the envelope) light bullets in noncentrosymmetric media at the second harmonic generation with phase and group velocity detunings. Only up to certain intensities does cubic nonlinearity prevent the formation of space-time solitons.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"88 12","pages":"1902 - 1907"},"PeriodicalIF":0.48,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142994932","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
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