Bulletin of the Russian Academy of Sciences: Physics最新文献_第6页

Features of Thermal Elastic Deformation of Polymer Film Caused by Laser Radiation of Various Power

IF 0.48

Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2025-02-27 DOI: 10.1134/S1062873824710031

I. S. Zisser, N. N. Rekunova, S. A. Piachin, Y. O. Zisser

引用次数: 0

Prospects for the Development of Laser-Based Directed Energy Deposition Additive Process Based on AI Technologies

IF 0.48

Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2025-02-27 DOI: 10.1134/S1062873824709711

A. A. Basakin, Y. N. Kulchin, V. V. Gribova, V. A. Timchenko, I. G. Zhevtun, E. O. Kudriashova, A. I. Nikitin

{"title":"Prospects for the Development of Laser-Based Directed Energy Deposition Additive Process Based on AI Technologies","authors":"A. A. Basakin, Y. N. Kulchin, V. V. Gribova, V. A. Timchenko, I. G. Zhevtun, E. O. Kudriashova, A. I. Nikitin","doi":"10.1134/S1062873824709711","DOIUrl":"10.1134/S1062873824709711","url":null,"abstract":"Laser-based directed energy deposition process is one of the most promising processes for manufacturing, machining and repair of large-size metal parts of mechanical engineering. The complexity of controlling many changing parameters complicates its practical application. In the article the necessity of using intelligent decision support systems for process engineers of laser-based additive manufacturing is explained. The concept of an ensemble of ontological resources, which is implemented on the IACPaaS cloud platform and can be the basis of such systems, is described. The ensemble includes both a set of related ontologies and domain databases and knowledge bases. The peculiarity of the proposed solutions is that the ontology models are separated from the data and knowledge bases formed on their basis—the target information. Ontology in this approach provides an accurate description of structure, semantics, integrity constraints, as well as defines the rules of formation of target information and its interpretation. Also, one of the main differences from analogues is the explainability of the issued recommendations laid down in the designed decision support system. The developed models, methods and a set of software tools will eliminate some problems of application of additive technologies in industrial production processes, including reducing the requirements for the qualification of technological equipment users.","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"88 3 supplement","pages":"S293 - S298"},"PeriodicalIF":0.48,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143496862","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 Steering of Liquid Flows in Sessile Droplets

IF 0.48

Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2025-02-27 DOI: 10.1134/S1062873824709747

A. V. Dyshlyuk

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Flexible Copper-Based Electrode Modified with Zinc Hexacyanoferrate as Cathode for Hybrid Supercapacitors

IF 0.48

Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2025-02-27 DOI: 10.1134/S1062873824709814

M. Kaneva, A. Levshakova, A. Lobinsky, M. Tenevich, R. Ninayan, A. Shmalko, A. Zakharov, A. Manshina, E. Khairullina

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Methodology of Measuring and Using Fluorescent Parameters of Microalgae

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Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2025-02-27 DOI: 10.1134/S1062873824709917

A. Popik, S. Voznesenskiy, T. Dunkai, E. Gamayunov, T. Orlova, A. Leonov, A. Zinov

引用次数: 0

Effect of Linearly Polarized Light on the Dynamics of Maize Plants Development

IF 0.48

Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2025-02-27 DOI: 10.1134/S1062873824709826

Yu. N. Kulchin, S. O. Kozhanov, A. S. Kholin, E. P. Subbotin, N. I. Subbotina, A. S. Gomolsky, O. O. Slugina

{"title":"Effect of Linearly Polarized Light on the Dynamics of Maize Plants Development","authors":"Yu. N. Kulchin, S. O. Kozhanov, A. S. Kholin, E. P. Subbotin, N. I. Subbotina, A. S. Gomolsky, O. O. Slugina","doi":"10.1134/S1062873824709826","DOIUrl":"10.1134/S1062873824709826","url":null,"abstract":"While there are many works in the literature that study the effect of such light parameters as wavelength, intensity, photoperiod on plants growth, very little attention is payed to parameter of light polarization. Nevertheless, this light characteristic, as shown in some studies, can have a significant effect on plant development. In most of these studies, the authors note the positive effect of light which is circularly polarized. In one of our previous studies, we showed that maize plants develop better under white linearly polarized light than under non-polarized. In current work, we investigated the effect of linearly polarized light of white, red, green and blue spectral ranges on the dynamics of maize plant development of the Rannyaya Lakomka and Kubansky Sakharny varieties during the week. The results showed that the highest growth rates of maize plants of both varieties relative to non-polarized light treatment were demonstrated by plants grown under green and blue light. Under white light, this effect was less significant, and under red light it was not observed.","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"88 3 supplement","pages":"S357 - S360"},"PeriodicalIF":0.48,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143496972","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

Detection of Weak Seismic Waves in Land–Sea Interface by Fiber-Optic Interferometric Accelerometers

IF 0.48

Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2025-02-27 DOI: 10.1134/S1062873824709802

O. T. Kamenev, A. O. Kamenev, Yu. S. Petrov, A. A. Podlesnykh

引用次数: 0

Features of the Bragg Diffraction on the Regular Domain Structures with Inclined Walls in 5% MgO:LiNbO3

IF 0.48

Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2025-02-27 DOI: 10.1134/S1062873824709930

E. N. Savchenkov, A. V. Dubikov, D. E. Belskaya, S. M. Shandarov, M. A. Chuvakova, A. R. Akhmatkhanov, V. Ya. Shur

{"title":"Features of the Bragg Diffraction on the Regular Domain Structures with Inclined Walls in 5% MgO:LiNbO3","authors":"E. N. Savchenkov, A. V. Dubikov, D. E. Belskaya, S. M. Shandarov, M. A. Chuvakova, A. R. Akhmatkhanov, V. Ya. Shur","doi":"10.1134/S1062873824709930","DOIUrl":"10.1134/S1062873824709930","url":null,"abstract":"The results of an experimental study and theoretical analysis of Bragg diffraction of light on regular domain structures (RDS) with inclined walls in a sample of 5% MgO:LiNbO3 at different positions of the center of an elliptical probe laser beam with a waist size of 2Δz ≈ 25 µm along the polar Z axis are presented. From the experiments it has been found that the diffraction efficiency η1(z) for the first spatial harmonic of perturbations of the optical properties created by the walls of the RDS in the crystal is characterized by nonmonotonic behavior with a minimum of η1 = 0.02 at z = 0.45 mm and two maxima: η1 = 0.11 at z = 0.19 mm and η1 = 0.15 at z = 0.80 mm. Under theoretical analysis of the diffraction efficiency at Bragg maxima we have used an approach based on the Fourier decomposition of dielectric tensor perturbations created by inclined walls of the RDS in discrete spatial harmonics with coefficients determined by the components of the continuous angular spectrum. The derived integral expressions for the diffraction field made it possible to describe the dependences of η1(z) in the Bragg diffraction maximum corresponding to a discrete harmonic with the number m = 1 in the distribution of the perturbations of the optical properties created by RDS with different domain wall parameters. Numerical calculations carried out within the framework of the developed model demonstrated a satisfactory agreement of the theoretical dependence of η1(z) with the relevant experimental data.","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"88 3 supplement","pages":"S413 - S417"},"PeriodicalIF":0.48,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143496680","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 Preparation of Bimetallic Au–Pt Nanoparticles for Modification of Dark TiO2 Photocatalyst 激光制备双金属金铂纳米粒子以改性暗色 TiO2 光催化剂

IF 0.48

Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2025-02-25 DOI: 10.1134/S1062873824708948

E. D. Fakhrutdinova, M. Krainyukova, A. V. Volokitina, V. A. Svetlichnyi

{"title":"Laser Preparation of Bimetallic Au–Pt Nanoparticles for Modification of Dark TiO2 Photocatalyst","authors":"E. D. Fakhrutdinova, M. Krainyukova, A. V. Volokitina, V. A. Svetlichnyi","doi":"10.1134/S1062873824708948","DOIUrl":"10.1134/S1062873824708948","url":null,"abstract":"Bimetallic Au–Pt nanoparticles with different molar ratios were obtained using laser synthesis (Nd:YAG laser with the parameters: 1064 nm, 180 mJ, 7 ns, and 20 Hz). The bimetallic nature of the particles was confirmed by X-ray diffraction and UV-visible spectroscopy. According to the transmission electron microscopy data, it was found that the bimetallic nanoparticles were represented by the alloy particles of an elongated shape with a diameter of 5–10 nm. Then, the bimetallic particles were decorated with a powder of highly defective dark titania by impregnation.The photocatalytic activity of the TiO2 with deposited bimetallic particles was estimated in the reactions of Rhodamine B dye decomposition and hydrogen production under LED irradiation with a wavelength of 375 nm. It was found that the highest photocatalytic activity in the series was exhibited by the samples with the deposited bimetallic particles, where the Au : Pt ratios was 50 : 50 and 30 : 70. It was also shown that the TiO2 nanoparticles decorated with the bimetallic Au : Pt NPs exhibited higher activity compared to the samples successively modified with monometals in the same ratios.","PeriodicalId":504,"journal":{"name":"Bulletin of the Russian Academy of Sciences: Physics","volume":"88 2 supplement","pages":"S154 - S159"},"PeriodicalIF":0.48,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143489595","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

Brillouin Scattering in Collagen-Based Hydrogels

IF 0.48

Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2025-02-25 DOI: 10.1134/S1062873824708985

A. V. Laktionova, V. A. Zykova, N. V. Surovtsev

引用次数: 0