Russian Physics Journal最新文献_第6页

Current spikes and space charge solitons in tubular pulsed electron beams: numerical modeling 管状脉冲电子束中的电流尖峰和空间电荷孤子：数值模拟

IF 0.8 4区物理与天体物理

Russian Physics Journal Pub Date : 2026-01-22 DOI: 10.1007/s11182-026-03672-8

I. V. Pegel, E. M. Totmeninov, A. A. Grishkov, V. Yu. Konev, O. O. Mutylin

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Structural, thermal, spectroscopic and some more interesting properties of ammonium sulphate doped l-glutamic acid hydrochloride single crystal 硫酸铵掺杂l-谷氨酸盐酸盐单晶的结构、热、光谱和一些更有趣的性质

IF 0.8 4区物理与天体物理

Russian Physics Journal Pub Date : 2026-01-21 DOI: 10.1007/s11182-026-03662-w

D. Jancy, D. Deva Jayanthi, J. D. Deephlin Tarika

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Surrogate-assisted machine learning framework for accurate prediction of mechanical behavior in Al/SiC composites 用于准确预测Al/SiC复合材料力学行为的代理辅助机器学习框架

IF 0.8 4区物理与天体物理

Russian Physics Journal Pub Date : 2026-01-21 DOI: 10.1007/s11182-026-03657-7

Jagadish Lolugu, Mahesh Kaza, Venkateswara Reddy Kunduru, K. Venkateswara Reddy

{"title":"Surrogate-assisted machine learning framework for accurate prediction of mechanical behavior in Al/SiC composites","authors":"Jagadish Lolugu, Mahesh Kaza, Venkateswara Reddy Kunduru, K. Venkateswara Reddy","doi":"10.1007/s11182-026-03657-7","DOIUrl":"10.1007/s11182-026-03657-7","url":null,"abstract":"<div>The accurate prediction of the mechanical behavior in aluminum-silicon carbide (Al-SiC) composites is essential for optimizing processing conditions and ensuring a reliable performance in engineering applications. In recent years, machine learning has emerged as a powerful tool to capture complex, nonlinear interactions among processing variables. In this work, two regression frameworks—artificial neural network (ANN) and extreme gradient boosting (XGBoost)—were systematically developed and optimized using GridSearchCV. The ANN baseline showed poor predictive capability with an 𝑅2 value of 0.214, a mean absolute error (MAE) of 22.62, and a root mean square error (RMSE) of 27.48. In contrast, XGBoost achieved a much higher accuracy with 𝑅2 = 0.716, MAE = 13.30, and RMSE = 16.52, confirming its suitability as the base learner. In order to address the need for a lightweight and interpretable framework, a surrogate model was adopted wherein an ANN was trained to replicate the predictions of the XGBoost model. The surrogate ANN demonstrated strong fidelity, achieving 𝑅2 = 0.796, MAE = 9.20, and RMSE = 12.62 when compared against XGBoost outputs. These results indicate that ANN surrogates can effectively approximate complex gradient boosting models, offering a computationally efficient and scalable pathway for real-time prediction and decision support in composite material design.</div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"68 12","pages":"2084 - 2094"},"PeriodicalIF":0.8,"publicationDate":"2026-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148695611","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}

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Synthesis of porous anodic aluminum oxide doped with carbon nitride and its photocatalytic activity 掺氮化碳多孔阳极氧化铝的合成及其光催化活性

IF 0.8 4区物理与天体物理

Russian Physics Journal Pub Date : 2026-01-21 DOI: 10.1007/s11182-026-03653-x

K. A. Bolgaru, R. M. Gadirov, L. N. Skvortsova, V. M. Makarova, E. R. Ragimov, A. E. Kurtsevich

引用次数: 0

Structural and mechanical characteristics of high-entropy CoCrFeMnNi alloys manufactured by vacuum induction melting 真空感应熔炼高熵CoCrFeMnNi合金的组织与力学特性

IF 0.8 4区物理与天体物理

Russian Physics Journal Pub Date : 2026-01-21 DOI: 10.1007/s11182-026-03659-5

V. K. Drobyshev, I. A. Panchenko, S. V. Konovalov, E. M. Zapolskaya

{"title":"Structural and mechanical characteristics of high-entropy CoCrFeMnNi alloys manufactured by vacuum induction melting","authors":"V. K. Drobyshev, I. A. Panchenko, S. V. Konovalov, E. M. Zapolskaya","doi":"10.1007/s11182-026-03659-5","DOIUrl":"10.1007/s11182-026-03659-5","url":null,"abstract":"<div>The microstructure and the mechanical and tribological properties of high-entropy alloys (HEAs) within the CoCrFeMnNi system with varying elemental ratios are investigated. Five alloys with different Co contents (15–25 at.%), Cr (15–25 at.%), Fe (10–30 at.%), and Mn (10–30 at.%), alongside a fixed Ni concentration (20 at.%), are fabricated via vacuum induction melting. An X‑ray spectral microanalysis conducted by scanning electron microscopy (SEM) reveals a dendritic microstructure predominantly composed of a face-centered cubic (FCC) phase. Nanoscale secondary MnNi phases are identified in the alloys with elevated manganese content (exceeding 25%), which are localized along the grain boundaries. The equiatomic Co2₀Cr2₀Fe2₀Mn2₀Ni2₀ alloy exhibits the highest nanohardness (2.06 GPa) and Young’s modulus (109 GPa) values attributed to the synergistic interplay of the solid-solution strengthening and high dislocation density. The microhardness values range from 121 to 146 HV, peaking in the alloy with 30% Mn (Co2₀Cr2₀Fe1₀Mn3₀Ni2₀). The tribological tests performed under a pin-on-disc configuration demonstrate a direct correlation between the coefficient of friction (0.663–0.824) and the wear rate ((5.8–8.7)⋅10⁻5 mm3/N·m). The minimum wear rate is recorded for the Co25Cr25Fe19Mn15Ni2₀ alloy (5.8⋅10⁻5 mm3/N·m), resulting from the formation of protective Cr2O3/MnO2 oxide layers mitigating adhesion. An optimal balance of strength and wear resistance is achieved in the equiatomic composition, which demonstrates a wear rate of 6.1⋅10⁻5 mm3/N·m and a coefficient of friction of 0.743.</div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"68 12","pages":"2105 - 2115"},"PeriodicalIF":0.8,"publicationDate":"2026-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148695613","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

Photoluminescence and thermoluminescence properties of Ce-doped Ba3Bi2(PO4)4 phosphors 掺ce的Ba3Bi2(PO4)4荧光粉的光致发光和热致发光性能

IF 0.8 4区物理与天体物理

Russian Physics Journal Pub Date : 2026-01-16 DOI: 10.1007/s11182-026-03669-3

Suman Agrawal, Piyush Jha, Rishi Jaiswal, V. K. Chandra

引用次数: 0

Numerical simulation of gyromagnetic nonlinear transmission line excitation by a bipolar voltage pulse of nanosecond duration 纳秒级双极电压脉冲激励回旋磁非线性传输线的数值模拟

IF 0.8 4区物理与天体物理

Russian Physics Journal Pub Date : 2026-01-15 DOI: 10.1007/s11182-026-03674-6

P. V. Priputnev, O. O. Mutylin, I. V. Romanchenko

引用次数: 0

Laser-induced TiO2 plasma characterization and antibacterial efficacy of nanoparticles produced by pulsed laser ablation 激光诱导TiO2等离子体表征及脉冲激光烧蚀制备纳米颗粒的抗菌效果

IF 0.8 4区物理与天体物理

Russian Physics Journal Pub Date : 2026-01-15 DOI: 10.1007/s11182-026-03673-7

Huda O. Saheb, Haidar K. Dhayef, Mohammed H. Jawad, Zahraa T. Turki, Rajaa Obayes Abdulsada

{"title":"Laser-induced TiO2 plasma characterization and antibacterial efficacy of nanoparticles produced by pulsed laser ablation","authors":"Huda O. Saheb, Haidar K. Dhayef, Mohammed H. Jawad, Zahraa T. Turki, Rajaa Obayes Abdulsada","doi":"10.1007/s11182-026-03673-7","DOIUrl":"10.1007/s11182-026-03673-7","url":null,"abstract":"<div>A spectroscopic study of TiO2 plasma produced by a 500 mJ Nd:YAG laser is performed. Optical emission spectroscopy (OES) is used to obtain important information on the electron temperature and density. The Stark expansion method is used to calculate the electron density, which is found to be 6.44⋅1017 electrons/cm3, while the Boltzmann diagram method is used to calculate the electron temperature, which is 1.926 eV. Nanoparticles are prepared by pulsed laser ablation in liquid (PLAL) and examined using XRD and FE-SEM techniques, which revealing that the resulting nanoparticles have an average diameter of 35 nm. The absorbance test of the prepared sample shows the maximum wavelength of 373 nm, and the biological effectiveness of these particles is tested against two types of bacteria (E. coli and S. aureus) using four different concentrations, where the samples show promising results due to their nanoscale properties and high stability proven by the Zeta potential test.</div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"68 12","pages":"2238 - 2247"},"PeriodicalIF":0.8,"publicationDate":"2026-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148695434","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

Advancing the theory and understanding of quantum self-frictional fields 推进量子自摩擦场的理论和理解

IF 0.8 4区物理与天体物理

Russian Physics Journal Pub Date : 2026-01-15 DOI: 10.1007/s11182-026-03675-5

B. A. Mamedov

引用次数: 0

Spatially continuous transformation of low-stable dislocation structures in gradient-structured alloys 梯度组织合金中低稳定位错组织的空间连续转变

IF 0.8 4区物理与天体物理

Russian Physics Journal Pub Date : 2026-01-15 DOI: 10.1007/s11182-026-03658-6

L. I. Trishkina, A. I. Potekaev, A. A. Klopotov, T. V. Cherkasova, V. I. Borodin, O. G. Volokitin

{"title":"Spatially continuous transformation of low-stable dislocation structures in gradient-structured alloys","authors":"L. I. Trishkina, A. I. Potekaev, A. A. Klopotov, T. V. Cherkasova, V. I. Borodin, O. G. Volokitin","doi":"10.1007/s11182-026-03658-6","DOIUrl":"10.1007/s11182-026-03658-6","url":null,"abstract":"<div>The paper presents transmission electron microscopy of alloys based on the Cu-Al system, having a gradient structure in order to investigate the spatially continuous transformation of low-stable dislocation structures during large plastic strain to fracture. The identified sequence of strain carriers (dislocation structures) matches that observed before on the stress-strain curve. Two main sequences are observed for the transformation of dislocation structures with increasing distance from the fracture point. With increasing strain degree, the following sequential change in dislocation structures is observed for alloys Cu+0.5 and Cu+5 at.% Al: fragmented, microband, misoriented cellular and non-misoriented cellular. Another sequential transformation is observed for alloys Cu+10 and Cu+14 at.% Al with increasing distance from the fracture point: microband, microtwin, misoriented cellular network, non-misoriented cellular and stacking faults. A great number of bend extinction contours indicates to higher internal stress fields, which, in turn, denote the low localized stability of the structure.</div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"68 12","pages":"2095 - 2104"},"PeriodicalIF":0.8,"publicationDate":"2026-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148695430","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