发布求助
文献互助 智能选刊 最新文献

Bulletin of the Lebedev Physics Institute最新文献

筛选
英文 中文
Image Superresolution in Single-Pixel Imaging with Generative Adversarial Networks 基于生成对抗网络的单像素图像超分辨率
IF 0.6 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2025-04-02 DOI: 10.3103/S1068335624601729
D. V. Babukhin, A. A. Reutov, D. V. Sych
{"title":"Image Superresolution in Single-Pixel Imaging with Generative Adversarial Networks","authors":"D. V. Babukhin,&nbsp;A. A. Reutov,&nbsp;D. V. Sych","doi":"10.3103/S1068335624601729","DOIUrl":"10.3103/S1068335624601729","url":null,"abstract":"<p>Imaging of physical objects using single-pixel cameras is an actively developing area at the intersection of optics and computational mathematics. Image restoration algorithms used in single-pixel cameras usually provide low resolution due to practical limitations on realistic computing resources. In this paper, we demonstrate an increase in the resolution of images obtained in single-pixel imaging using a generative adversarial neural network and discuss its application using the example of chest X-ray images from the MedMNIST dataset.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"52 1","pages":"14 - 21"},"PeriodicalIF":0.6,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143749173","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
Structure of Arrays of Laterally Associated InGaAs/GaAs Quantum Dots Grown by Molecular Beam Epitaxy with a Bi Surfactant Bi表面活性剂分子束外延生长InGaAs/GaAs量子点阵列的结构
IF 0.6 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2025-04-02 DOI: 10.3103/S1068335624601031
A. V. Klekovkin, A. A. Rudenko, V. I. Tsekhosh, I. P. Kazakov
{"title":"Structure of Arrays of Laterally Associated InGaAs/GaAs Quantum Dots Grown by Molecular Beam Epitaxy with a Bi Surfactant","authors":"A. V. Klekovkin,&nbsp;A. A. Rudenko,&nbsp;V. I. Tsekhosh,&nbsp;I. P. Kazakov","doi":"10.3103/S1068335624601031","DOIUrl":"10.3103/S1068335624601031","url":null,"abstract":"<p>Use is made of atomic force and scanning electron microscopies to study the formation of InGaAs/GaAs quantum dots by molecular beam epitaxy under the action of a Bi vapor flow on the growth surface at different temperatures of the GaAs substrate. It is shown that Bi acts as a surfactant, increasing the temperature of emergence of laterally associated quantum dots by 100°C.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"52 1","pages":"37 - 41"},"PeriodicalIF":0.6,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143749178","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
Realization of the SERS Effect in a Silicon Semiconductor Structure with Fano Resonance 用范诺共振在硅半导体结构中实现SERS效应
IF 0.6 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2025-04-02 DOI: 10.3103/S1068335624601924
N. N. Melnik, E. V. Perevedentseva, V. V. Tregulov, G. N. Skoptsova, Yu. N. Gorbunova, D. S. Kostsov
{"title":"Realization of the SERS Effect in a Silicon Semiconductor Structure with Fano Resonance","authors":"N. N. Melnik,&nbsp;E. V. Perevedentseva,&nbsp;V. V. Tregulov,&nbsp;G. N. Skoptsova,&nbsp;Yu. N. Gorbunova,&nbsp;D. S. Kostsov","doi":"10.3103/S1068335624601924","DOIUrl":"10.3103/S1068335624601924","url":null,"abstract":"<p>A method for obtaining active surface-enhanced Raman scattering (SERS) substrates with an enhancement factor of ~10<sup>4</sup> is presented. It is shown that substrates with a more pronounced Fano resonance in a silicon porous structure obtained by thermal boron diffusion have a high enhancement factor.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"52 1","pages":"1 - 6"},"PeriodicalIF":0.6,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143749174","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
Theoretical Investigation of Electron Dynamics in Liquid Media under Nanosecond Pulsed Laser Irradiation 纳秒脉冲激光辐照下液体介质中电子动力学的理论研究
IF 0.6 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2025-04-02 DOI: 10.3103/S106833562460102X
H. Delibašić-Marković, V. Petrović, I. Petrović
{"title":"Theoretical Investigation of Electron Dynamics in Liquid Media under Nanosecond Pulsed Laser Irradiation","authors":"H. Delibašić-Marković,&nbsp;V. Petrović,&nbsp;I. Petrović","doi":"10.3103/S106833562460102X","DOIUrl":"10.3103/S106833562460102X","url":null,"abstract":"<p>In this study, we develop a comprehensive mathematical model to explore the dynamics of laser-induced breakdown in water-like media, focusing on the electron multiplication process across a spectrum of laser intensities and wavelengths, ranging from 355 to 1064 nm. Utilizing the Green’s function method, we derived an analytical solution for the primary differential equation governing the temporal evolution of free-electron density. This methodological approach allows for an accurate characterization of the electron multiplication thresholds and precise timing of electrical breakdown under varied laser settings. Our findings demonstrate a robust correlation with data from experimental studies on laser interactions with water-like substances, confirming the model’s predictive accuracy and its utility in enhancing our understanding of the mechanisms governing laser-induced electron dynamics. This research provides valuable insights for optimizing laser applications in similar environments, enhancing both theoretical understanding and practical application of the observed phenomena.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"52 1","pages":"22 - 30"},"PeriodicalIF":0.6,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143749223","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
Wide-Aperture Liquid Crystal Electro-Optic Modulator of Carbon Monoxide Laser Radiation 一氧化碳激光辐射大孔径液晶电光调制器
IF 0.6 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2025-03-18 DOI: 10.3103/S1068335625600135
A. V. Kuznetsov, A. A. Zhukovich-Gordeeva, Yu. M. Klimachev, A. V. Kaznacheev, A. Yu. Kozlov, M. V. Minchenko, O. A. Rulev, D. V. Sinitsyn, E. P. Pozhidaev, A. A. Ionin
{"title":"Wide-Aperture Liquid Crystal Electro-Optic Modulator of Carbon Monoxide Laser Radiation","authors":"A. V. Kuznetsov,&nbsp;A. A. Zhukovich-Gordeeva,&nbsp;Yu. M. Klimachev,&nbsp;A. V. Kaznacheev,&nbsp;A. Yu. Kozlov,&nbsp;M. V. Minchenko,&nbsp;O. A. Rulev,&nbsp;D. V. Sinitsyn,&nbsp;E. P. Pozhidaev,&nbsp;A. A. Ionin","doi":"10.3103/S1068335625600135","DOIUrl":"10.3103/S1068335625600135","url":null,"abstract":"<p>Liquid crystal electro-optic modulators of mid-IR radiation have been developed, which can control the polarization state of CO laser radiation in the wavelength range of 5.1 to 5.6 μm with light aperture up to 2.5 cm<sup>2</sup>. The use of a ferroelectric liquid crystal as an electrooptic medium located between crossed polarizer and analyzer made it possible to ensure thermally stable electro-optic modulation of CO-laser radiation at a frequency from 1 to 10 kHz and a contrast ratio from 15 : 1 to 25 : 1. The modes of electrically controlled half-wave and quarter-wave plates with switching times of polarization states from 20 to 50 μs are ensured as is the ability to remember the obtained polarization state after switching off control voltage. The minimum polarization state switching time was 1.4 μs, which was observed at a modulation frequency of 40 kHz and rotation of the liquid-crystal optic axis by an angle of a few degrees, which decreased the contrast ratio to 1.3 : 1.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"51 12 supplement","pages":"S1047 - S1060"},"PeriodicalIF":0.6,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143645411","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
Development of Numerical Methods for Applications of Coherent Radiation in Studies of the Internal Structure of Objects (Part I) 相干辐射在物体内部结构研究中的数值方法发展（一）
IF 0.6 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2025-03-18 DOI: 10.3103/S1068335625600111
A. S. Busarov, A. V. Vinogradov, N. L. Popov, I. A. Artyukov
{"title":"Development of Numerical Methods for Applications of Coherent Radiation in Studies of the Internal Structure of Objects (Part I)","authors":"A. S. Busarov,&nbsp;A. V. Vinogradov,&nbsp;N. L. Popov,&nbsp;I. A. Artyukov","doi":"10.3103/S1068335625600111","DOIUrl":"10.3103/S1068335625600111","url":null,"abstract":"<p>We consider the problem of finding the spatial distribution of the complex dielectric constant of an object of arbitrary shape. An algorithm for solving this problem is constructed by processing phase diffraction patterns obtained by successive irradiation of the object with Gaussian beams. Formally, we deal with the coefficient inverse problem for the three-dimensional parabolic wave equation or the equivalent inverse problem of quantum scattering theory for a particle moving in a two-dimensional time-dependent potential. To solve the latter, the wave function of the system is expanded in terms of functions of Gaussian beams propagating in free space. The main advantages of the approach are the direct determination of the refractive index along with absorption, as well as the elimination of rotation or movement of the sample and radiation source; its further development can lead to the emergence of a qualitatively new nondestructive method for studying and testing materials and samples.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"51 12 supplement","pages":"S1004 - S1009"},"PeriodicalIF":0.6,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143645565","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
Laser Crystallization of Silicon Coatings on Flexible Polymer Substrates: Effect of the Absorbing Layer Metal 柔性聚合物基板上硅涂层的激光结晶：吸收层金属的影响
IF 0.6 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2025-03-18 DOI: 10.3103/S1068335624601353
A. A. Serdobintsev, L. D. Volkovoinova
{"title":"Laser Crystallization of Silicon Coatings on Flexible Polymer Substrates: Effect of the Absorbing Layer Metal","authors":"A. A. Serdobintsev,&nbsp;L. D. Volkovoinova","doi":"10.3103/S1068335624601353","DOIUrl":"10.3103/S1068335624601353","url":null,"abstract":"<p>The results of studying the effect of metal coatings on the process of silicon crystallization on flexible polymer substrates are presented. The study was conducted using such metals as aluminum, tin, nickel, and molybdenum as examples. Crystallization was carried out by the method of metal-induced laser-stimulated crystallization (MILSC). To determine the degree of influence of a metal on the crystallization process, the silicon structure after processing was investigated by the Raman scattering method.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"51 12 supplement","pages":"S1084 - S1089"},"PeriodicalIF":0.6,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143645457","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
Reflectometry in the Soft X-Ray Range with a Laser-Plasma Radiation Source 激光等离子体辐射源在软x射线范围内的反射测量
IF 0.6 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2025-03-18 DOI: 10.3103/S1068335625600019
E. N. Ragozin
{"title":"Reflectometry in the Soft X-Ray Range with a Laser-Plasma Radiation Source","authors":"E. N. Ragozin","doi":"10.3103/S1068335625600019","DOIUrl":"10.3103/S1068335625600019","url":null,"abstract":"<p>The design and application of reflectometers with a grazing incidence grating for the wavelength region shorter than 300 Å are discussed. The focus is on reflectometers with laser-produced plasma sources excited by a pulsed-periodic laser with “moderate” output parameters (pulse energy of 0.1 to 1 J, pulse duration of 10 ns or less). Our findings can be useful for the development of metrological facilities in the soft X-ray range of the spectrum, both laboratory-based and included in commercial production of integrated circuits by projection X-ray lithography.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"51 12 supplement","pages":"S983 - S993"},"PeriodicalIF":0.6,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143645522","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
Evolution of Individual Fractions in the Distribution of Metal Nanoparticles during Their Laser Fragmentation 金属纳米颗粒激光破碎过程中单个组分分布的演变
IF 0.6 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2025-03-18 DOI: 10.3103/S1068335625600081
K. O. Aiyyzhy, E. V. Barmina, P. S. Kuleshov, G. A. Shafeev
{"title":"Evolution of Individual Fractions in the Distribution of Metal Nanoparticles during Their Laser Fragmentation","authors":"K. O. Aiyyzhy,&nbsp;E. V. Barmina,&nbsp;P. S. Kuleshov,&nbsp;G. A. Shafeev","doi":"10.3103/S1068335625600081","DOIUrl":"10.3103/S1068335625600081","url":null,"abstract":"<p>The paper presents a concept of laser fragmentation of metal nanoparticles in liquids by nanoseconds pulses and demonstrates evolution of individual fractions in the nanoparticle size distributions. The concept is based on the capillary-wave mechanism for the formation of fractions of fragments of initial particles. The presented results of theoretical simulation are in good agreement with the experimental data.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"51 12 supplement","pages":"S1070 - S1083"},"PeriodicalIF":0.6,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143645455","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
Features of X-Ray Spectra of Copper in Laser Plasma and a Hybrid X-Pinch 铜在激光等离子体中的x射线光谱特征及混合X-Pinch
IF 0.6 4区 物理与天体物理
Bulletin of the Lebedev Physics Institute Pub Date : 2025-03-18 DOI: 10.3103/S1068335625600044
I. N. Tilikin, T. A. Shelkovenko, A. A. Rupasov, A. M. Chekmarev, S. A. Pikuz
{"title":"Features of X-Ray Spectra of Copper in Laser Plasma and a Hybrid X-Pinch","authors":"I. N. Tilikin,&nbsp;T. A. Shelkovenko,&nbsp;A. A. Rupasov,&nbsp;A. M. Chekmarev,&nbsp;S. A. Pikuz","doi":"10.3103/S1068335625600044","DOIUrl":"10.3103/S1068335625600044","url":null,"abstract":"<p>The results of studies of the copper spectra in the soft X-ray range in two fundamentally different (they differ in the heating method) high-temperature dense objects with high energy densities, laser plasma and a hybrid X-pinch, are presented. The uniqueness of the conducted experiments is that both sources were created at the Lebedev Physical Institute, Russian Academy of Sciences (FIAN), and are currently actively operating. The use of the same measuring equipment, which was also invented at FIAN, in these experiments made it possible to completely eliminate the influence of the conditions for observing and recording spectra on the obtained results. Calculations of the spectra have been performed using the radiation–collision model, from which it follows that only if a large number of transitions followed by averaging the obtained numerical results are taken into account, the results can be compared with the experimental data. It has been shown that it is necessary to take not only the plasma temperature and density into account when comparing the theory and particular experimental results, but the plasma size and shape must also be considered. Only in this case, it becomes possible to simulate the experimentally obtained results with satisfactory accuracy. In this case, it is possible to obtain information on the size of the emitting plasma region, which was never done previously.</p>","PeriodicalId":503,"journal":{"name":"Bulletin of the Lebedev Physics Institute","volume":"51 12 supplement","pages":"S975 - S982"},"PeriodicalIF":0.6,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143645470","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
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信