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

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Using Island SERS Structures on GaP Substrates for Surface-Enhanced Inelastic Light Scattering in the Infrared Range 利用岛状SERS结构在GaP基板上进行红外范围表面增强非弹性光散射
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2025-04-24 DOI: 10.1134/S1062873824709553
S. M. Makarovskaya, V. V. Solovyev, T. D. Rudakov, I. V. Kukushkin
{"title":"Using Island SERS Structures on GaP Substrates for Surface-Enhanced Inelastic Light Scattering in the Infrared Range","authors":"S. M. Makarovskaya,&nbsp;V. V. Solovyev,&nbsp;T. D. Rudakov,&nbsp;I. V. Kukushkin","doi":"10.1134/S1062873824709553","DOIUrl":"10.1134/S1062873824709553","url":null,"abstract":"<p>The authors consider the properties of periodic dielectric structures made of gallium phosphide (GaP) coated with layers of silver. Such structures allow signals of surface-enhanced inelastic light scattering (SERS) to be amplified. Period dependences are obtained for the intensities of signal scattering at different heights of the structure. Intensities of signal scattering are compared for SERS structures on SiO<sub>2</sub> and GaP substrates at laser excitation wavelengths of 532, 785, and 1064 nm. GaP-based structures with thin metal layers are found to enhance signals by more than seven orders of magnitude in the infrared range. The dependence of the Raman gain on the thickness of deposited layers is studied.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"89 2","pages":"228 - 231"},"PeriodicalIF":0.48,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143871267","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
Study of Raman Spectroscopy Capabilities in Determining the Total Hemoglobin Content in Human Blood 拉曼光谱法测定人血液中总血红蛋白含量的研究
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2025-04-24 DOI: 10.1134/S1062873824709577
A. Yu. Subekin, T. E. Pylaev, V. I. Kukushkin, E. V. Rudakova, T. D. Rudakov
{"title":"Study of Raman Spectroscopy Capabilities in Determining the Total Hemoglobin Content in Human Blood","authors":"A. Yu. Subekin,&nbsp;T. E. Pylaev,&nbsp;V. I. Kukushkin,&nbsp;E. V. Rudakova,&nbsp;T. D. Rudakov","doi":"10.1134/S1062873824709577","DOIUrl":"10.1134/S1062873824709577","url":null,"abstract":"<p>The possibility of using Raman spectroscopy in determining the total hemoglobin content in the blood has been investigated. It has been established that a few lines in the Raman spectrum linearly depend on the hemoglobin concentration. It has been shown that SERS using silver colloids also gives a linear concentration dependence on the intensity of spectral lines.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"89 2","pages":"240 - 248"},"PeriodicalIF":0.48,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143871269","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
Studies of Spin–Phonon Interaction in Magnetic Topological Insulators MnBi2Te4 by Raman Spectroscopy 利用拉曼光谱研究磁性拓扑绝缘体 MnBi2Te4 中的自旋-虹离子相互作用
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2025-04-24 DOI: 10.1134/S1062873824709620
A. A. Maksimov, I. I. Tartakovskii, N. A. Abdullaev, N. T. Mamedov
{"title":"Studies of Spin–Phonon Interaction in Magnetic Topological Insulators MnBi2Te4 by Raman Spectroscopy","authors":"A. A. Maksimov,&nbsp;I. I. Tartakovskii,&nbsp;N. A. Abdullaev,&nbsp;N. T. Mamedov","doi":"10.1134/S1062873824709620","DOIUrl":"10.1134/S1062873824709620","url":null,"abstract":"<p>Experimental studies of Raman scattering spectra in single crystals of topological magnetic insulators MnBi<sub>2</sub>Te<sub>4</sub> have been performed in a wide temperature range. The influence of spin–phonon interaction on the studied spectra at temperatures below the antiferromagnetic phase transition temperature is discussed.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"89 2","pages":"276 - 279"},"PeriodicalIF":0.48,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143871211","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
Optical Computation of the Laplace Operator at Normal Incidence Using a Multilayer Metal–Dielectric Structure 基于多层金属-介电结构的正入射拉普拉斯算子的光学计算
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2025-04-17 DOI: 10.1134/S106287382470905X
A. I. Kashapov, E. A. Bezus, D. A. Bykov, L. L. Doskolovich
{"title":"Optical Computation of the Laplace Operator at Normal Incidence Using a Multilayer Metal–Dielectric Structure","authors":"A. I. Kashapov,&nbsp;E. A. Bezus,&nbsp;D. A. Bykov,&nbsp;L. L. Doskolovich","doi":"10.1134/S106287382470905X","DOIUrl":"10.1134/S106287382470905X","url":null,"abstract":"<p>A theoretical and numerical investigation was made of the optical implementation of the second-order spatial differentiation operation using a layered metal–dielectric structure at normal light beam incidence. Numerical simulation results confirmed the theoretical results and showed the possibility of optical calculation of the Laplace operator at normal incidence with high quality.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"89 1","pages":"7 - 10"},"PeriodicalIF":0.48,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143845729","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
Optical Pulses in a Non-Hermitian Medium near a Singularity 奇异点附近非厄米介质中的光脉冲
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2025-04-17 DOI: 10.1134/S1062873824709048
V. A. Bushuev, B. I. Mantsyzov
{"title":"Optical Pulses in a Non-Hermitian Medium near a Singularity","authors":"V. A. Bushuev,&nbsp;B. I. Mantsyzov","doi":"10.1134/S1062873824709048","DOIUrl":"10.1134/S1062873824709048","url":null,"abstract":"<p>The spectral method was used to solve the problem of interaction of short optical pulses with PT‑symmetric photonic crystals under conditions of frequency singularity. It was shown that, at a small deviation from the exceptional point of spontaneous decay of PT-symmetric field modes, frequency singularities of the transmission and reflection coefficients of the structure arise. This leads to a significant narrowing of the pulse spectra and an increase in their amplitude and duration with unidirectional Bragg reflection.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"89 1","pages":"1 - 6"},"PeriodicalIF":0.48,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143845731","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
Propagation of Fractal Speckles in Optical Systems and in Free Space 分形散斑在光学系统和自由空间中的传播
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2025-04-17 DOI: 10.1134/S1062873824709103
R. T. Kubanov, A. M. Zotov, P. V. Korolenko, A. Yu. Mishin
{"title":"Propagation of Fractal Speckles in Optical Systems and in Free Space","authors":"R. T. Kubanov,&nbsp;A. M. Zotov,&nbsp;P. V. Korolenko,&nbsp;A. Yu. Mishin","doi":"10.1134/S1062873824709103","DOIUrl":"10.1134/S1062873824709103","url":null,"abstract":"<p>The diffraction transformation of wave fractal fields is considered. It is shown that, when light beams with a speckle structure propagate in optical systems and in free space, their fractal properties have a high degree of stability.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"89 1","pages":"32 - 36"},"PeriodicalIF":0.48,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143845759","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
Laser-Driven Formation of Relativistic Electron Mirrors and Generation of Incoherent X-Rays 激光驱动的相对论性电子镜的形成和非相干x射线的产生
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2025-04-17 DOI: 10.1134/S1062873824709115
V. V. Kulagin, V. N. Kornienko, V. A. Cherepenin
{"title":"Laser-Driven Formation of Relativistic Electron Mirrors and Generation of Incoherent X-Rays","authors":"V. V. Kulagin,&nbsp;V. N. Kornienko,&nbsp;V. A. Cherepenin","doi":"10.1134/S1062873824709115","DOIUrl":"10.1134/S1062873824709115","url":null,"abstract":"<p>2D-PIC numerical simulations were performed to study the generation of X-rays by the interaction of an oncoming laser wave with a relativistic electron mirror formed by a powerful accelerating laser pulse from a plasma layer. The structure of the radiated field in the far zone was investigated, and the spectral density of the radiation field and the angular distribution of the pulse energy were found. Changing the parameters of the accelerating and counterpropagating waves allows one to control the characteristics of the radiation.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"89 1","pages":"37 - 43"},"PeriodicalIF":0.48,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143845766","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
Some Characteristics of Nonlinear Potential Surface Waves in an Ideal Fluid 理想流体中非线性势面波的一些特性
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2025-04-17 DOI: 10.1134/S1062873824709255
A. A. Ochirov, K. Yu. Lapshina
{"title":"Some Characteristics of Nonlinear Potential Surface Waves in an Ideal Fluid","authors":"A. A. Ochirov,&nbsp;K. Yu. Lapshina","doi":"10.1134/S1062873824709255","DOIUrl":"10.1134/S1062873824709255","url":null,"abstract":"<p>A potential wave motion along a free surface of a deep ideal fluid has been studied. The exact solutions of the equations of motion with the physically validated boundary conditions on a free surface have been obtained. The shape of the free surface has been studied as a function of the amplitude and the surface characteristics have been highlighted. The characteristics of waves as a function of the nonlinearity parameter have been studied.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"89 1","pages":"131 - 137"},"PeriodicalIF":0.48,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143845737","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
Retraction Note: SERS-Based Rapid Detection of Botulinum Toxin A Using an Aptasensor 撤稿注：基于sers的A型肉毒毒素aptassensor快速检测
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2025-04-17 DOI: 10.1134/S1062873825010010
O. A. Ambartsumyan, A. M. Brovko
{"title":"Retraction Note: SERS-Based Rapid Detection of Botulinum Toxin A Using an Aptasensor","authors":"O. A. Ambartsumyan,&nbsp;A. M. Brovko","doi":"10.1134/S1062873825010010","DOIUrl":"10.1134/S1062873825010010","url":null,"abstract":"","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"89 1","pages":"165 - 165"},"PeriodicalIF":0.48,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143845738","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
Calculations for a Relativistic Gyrotron in the Range of 300 GHz, Allowing for the True Shape of the Accelerating Voltage Pulse 300 千兆赫范围内相对论陀螺仪的计算，考虑到加速电压脉冲的真实形状
IF 0.48
Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2025-04-17 DOI: 10.1134/S1062873824709279
A. N. Leontyev, R. M. Rozental, O. P. Plankin, E. S. Semenov
{"title":"Calculations for a Relativistic Gyrotron in the Range of 300 GHz, Allowing for the True Shape of the Accelerating Voltage Pulse","authors":"A. N. Leontyev,&nbsp;R. M. Rozental,&nbsp;O. P. Plankin,&nbsp;E. S. Semenov","doi":"10.1134/S1062873824709279","DOIUrl":"10.1134/S1062873824709279","url":null,"abstract":"<p>Calculations are made for a relativistic gyrotron in the range of 300 GHz with power of up to 8 MW. Large-particle 3D modeling is used to calculate the shape of the output power pulse for the experimentally measured shape of accelerating voltage pulse. It is shown that the full energy of radiation at the operating frequency can exceed 4 J.</p>","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"89 1","pages":"147 - 151"},"PeriodicalIF":0.48,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143845739","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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