Journal of Experimental and Theoretical Physics最新文献

Quantum Size Effect in InSe Nanoparticles Synthesized by Laser Ablation in a Liquid Medium 液体介质中激光烧蚀合成铟硒纳米粒子的量子尺寸效应

IF 0.8 4区物理与天体物理

Journal of Experimental and Theoretical Physics Pub Date : 2026-04-20 DOI: 10.1134/S1063776125601934

V. M. Salmanov, A. G. Huseynov, M. A. Jafarov, N. F. Gakhramanov, G. B. Ibragimov, R. M. Mamedov, V. I. Hajieva

{"title":"Quantum Size Effect in InSe Nanoparticles Synthesized by Laser Ablation in a Liquid Medium","authors":"V. M. Salmanov, A. G. Huseynov, M. A. Jafarov, N. F. Gakhramanov, G. B. Ibragimov, R. M. Mamedov, V. I. Hajieva","doi":"10.1134/S1063776125601934","DOIUrl":"10.1134/S1063776125601934","url":null,"abstract":"The absorption and luminescence spectra of InSe nanoparticles synthesized by laser ablation in a liquid medium have been investigated experimentally. The radiation source was a pulsed Nd:YAG laser with built-in second and third harmonic generators, which was intended for generating radiation at wavelengths of 1064, 532, and 335 nm. The ablation was performed for ~ 10 min by the Nd:YAG laser at wavelength λ = 1064 nm, a pulse duration of 10 ns, an energy per pulse of 135 mJ, and a pulse repetition rate of 10 Hz in a quartz cuvette filled with distilled water. The bandgap width of InSe nanoparticles was calculated using the Tauc method. At high laser pumping intensities, a shift of the absorption band edge of InSe nanoparticles was observed in the short wavelength spectral region, and the peak of the luminescence spectrum of nanoparticles exceeded significantly the bandgap width of a bulk crystal. It is shown that the observed peculiarities in the absorption and luminescence spectra of InSe nanoparticles are associated with the quantum size effect.","PeriodicalId":629,"journal":{"name":"Journal of Experimental and Theoretical Physics","volume":"142 1","pages":"83 - 88"},"PeriodicalIF":0.8,"publicationDate":"2026-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147721045","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

Implications of Modified Hybrid and Logarithmic Symmetric Teleparallel Gravity on Compact Star Models 修正混合和对数对称遥平行引力在致密恒星模型中的意义

IF 0.8 4区物理与天体物理

Journal of Experimental and Theoretical Physics Pub Date : 2026-04-20 DOI: 10.1134/S1063776125602009

Madiha Ajmal, Eman M. Moneer, M. Sharif, Euaggelos E. Zotos

{"title":"Implications of Modified Hybrid and Logarithmic Symmetric Teleparallel Gravity on Compact Star Models","authors":"Madiha Ajmal, Eman M. Moneer, M. Sharif, Euaggelos E. Zotos","doi":"10.1134/S1063776125602009","DOIUrl":"10.1134/S1063776125602009","url":null,"abstract":"In this paper, we explore viability of stellar structures within the framework of modified Rastall (f(Q)) gravity, where (Q) represents non-metricity. We use the Karmarkar condition to evaluate the metric components of the spherical structure. Using the modified Rastall (f(Q)) gravity, we construct field equations that include a function (h(Q)). We examine this function under two different scenarios. In the first scenario, we consider a hybrid gravity model along with a linear equation of state to evaluate (h(Q)). In the second scenario, we use the hybrid form of (f(Q)) but this time we take (h(Q)) in logarithmic form. Our objective is to assess possible modifications in gravity by evaluating both cases for different values of (eta ) and (zeta ), through which gravity model transitions into hybrid, power-law and exponential forms. We then analyze different physical features of these models that indicate the acceptability and stability of the stellar objects. We use the observational data specifically, the mass and radius of the PSR J1416-2230 star. It is found that all cases exhibit stable and physically acceptable behavior except the exponential-logarithmic case.","PeriodicalId":629,"journal":{"name":"Journal of Experimental and Theoretical Physics","volume":"142 1","pages":"30 - 48"},"PeriodicalIF":0.8,"publicationDate":"2026-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147721042","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

Surface Energy of Bilayer Graphene Intercalated by Donor and Acceptor Atoms 供体和受体原子嵌入双层石墨烯的表面能

IF 0.8 4区物理与天体物理

Journal of Experimental and Theoretical Physics Pub Date : 2026-04-20 DOI: 10.1134/S1063776125601855

Z. A. Akhmatov

{"title":"Surface Energy of Bilayer Graphene Intercalated by Donor and Acceptor Atoms","authors":"Z. A. Akhmatov","doi":"10.1134/S1063776125601855","DOIUrl":"10.1134/S1063776125601855","url":null,"abstract":"Surface energy is an important characteristic that determines properties such as wettability, adhesion, as cohesion. In turn, wettability plays the key role in the deposition of contacts and solders on the surface. Layered carbon materials are wetted poorly by metals and their alloys, which imposes serious limitations on their use in new-generation micro- and nanoelectronics. For this reason, the investigation of the possibility to control the surface energy of graphene and graphene-like materials is a topical problem nowadays. In this study, the surface energy of pure and intercalated bilayer graphene is obtained using first principles calculations. The intercalation by donor (K, Ca) and acceptor (Br2) atoms (molecules) is considered. It is shown that the surface energy of bilayer graphene intercalated by donor-type atoms increases, while the use of acceptor-type molecules as intercalators reduces the surface energy. The results of this study make it possible to approach the solution to the problem of low wettability of layered carbon material surface and paves the way to a wide spectrum of applicability of these materials in modern electronic devices (including flexible electronics).","PeriodicalId":629,"journal":{"name":"Journal of Experimental and Theoretical Physics","volume":"142 1","pages":"49 - 53"},"PeriodicalIF":0.8,"publicationDate":"2026-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147721046","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

Enhanced Third Harmonic Generation in Thermal Quantum Plasma Driven by q-Gaussian Laser Beams q-高斯激光束驱动热量子等离子体中增强三次谐波的产生

IF 0.8 4区物理与天体物理

Journal of Experimental and Theoretical Physics Pub Date : 2026-04-20 DOI: 10.1134/S1063776125601867

Keshav Walia, Kulkaran Singh, Taranjot Singh

引用次数: 0

Rotating Effect on Optical Properties of a Quantum Ring with a Screw Dislocation: Theoretical Investigation 旋转对螺旋位错量子环光学性质的影响：理论研究

IF 0.8 4区物理与天体物理

Journal of Experimental and Theoretical Physics Pub Date : 2026-04-20 DOI: 10.1134/S1063776125601843

Ahmad Ghanbari

引用次数: 0

Novel Approach for Finding Soliton Solutions of the Pure-Cubic Optical Schrӧdinger Equation with Kerr Law Nonlinearity 寻找具有克尔定律非线性的纯三次光学Schrӧdinger方程孤子解的新方法

IF 0.8 4区物理与天体物理

Journal of Experimental and Theoretical Physics Pub Date : 2026-04-20 DOI: 10.1134/S1063776125601570

Salim S. Mahmood, Muhammad Amin S. Murad

{"title":"Novel Approach for Finding Soliton Solutions of the Pure-Cubic Optical Schrӧdinger Equation with Kerr Law Nonlinearity","authors":"Salim S. Mahmood, Muhammad Amin S. Murad","doi":"10.1134/S1063776125601570","DOIUrl":"10.1134/S1063776125601570","url":null,"abstract":"In this study, we investigate the pure-cubic optical Schrӧdinger equation with Kerr law nonlinearity, which plays a crucial role in modeling pulse propagation in optical fibers and nonlinear wave phenomena. Despite numerous analytical methods proposed in the literature, there remains a need for innovative approaches capable of generating diverse families of soliton solutions efficiently. To address this gap, we apply for the first time a novel soliton method (SM) combined with the traveling wave transformation to systematically derive optical soliton solutions. By employing this method, we successfully obtain twenty distinct families of exact soliton solutions encompassing exponential, trigonometric, hyperbolic, and polynomial function combinations. The dynamical behaviors of these solutions are illustrated through comprehensive 2D and 3D graphical representations, revealing wave solitons, dark solitons, and other nonlinear wave structures. Furthermore, the constraint conditions relating the physical parameters are established to ensure the existence of these solutions. The obtained results demonstrate that the proposed method is not only effective and straightforward but also significantly enriches the solution structure of the model. These findings have direct applications in optical communications, fiber optics technology, nonlinear optics, and the design of photonic devices where soliton propagation is essential. The novel methodology presented in this work contributes a powerful analytical tool to the scientific community for investigating other nonlinear evolution equations in mathematical physics and opens new avenues for understanding complex wave phenomena in nonlinear optical systems.","PeriodicalId":629,"journal":{"name":"Journal of Experimental and Theoretical Physics","volume":"142 1","pages":"63 - 82"},"PeriodicalIF":0.8,"publicationDate":"2026-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147721044","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

Microstructural X-Ray Studies of Silicon Nitride-Based Composite Ceramic Material 氮化硅基复合陶瓷材料的x射线显微结构研究

IF 0.8 4区物理与天体物理

Journal of Experimental and Theoretical Physics Pub Date : 2026-03-31 DOI: 10.1134/S1063776125602137

A. N. Astapov, S. A. Sitnikov, O. A. Butusova, V. V. Spiryagin, S. A. Kolesnik

引用次数: 0

Physicochemical and Mechanical Characteristics of Composite Materials Based on Siloxane Rubber and Ceramic Dispersed Fillers 硅氧烷橡胶和陶瓷分散填料复合材料的物理化学和力学特性

IF 0.8 4区物理与天体物理

Journal of Experimental and Theoretical Physics Pub Date : 2026-03-31 DOI: 10.1134/S1063776125602149

S. A. Sitnikov, A. N. Astapov, O. A. Butusova, V. V. Spiryagin, S. A. Kolesnik

{"title":"Physicochemical and Mechanical Characteristics of Composite Materials Based on Siloxane Rubber and Ceramic Dispersed Fillers","authors":"S. A. Sitnikov, A. N. Astapov, O. A. Butusova, V. V. Spiryagin, S. A. Kolesnik","doi":"10.1134/S1063776125602149","DOIUrl":"10.1134/S1063776125602149","url":null,"abstract":"This study is devoted to the characterization of the optimal gas-discharge chamber material based on commercial vulcanizable polydimethylsiloxane rubber filled with a dispersed silicon dioxide-based reinforcing phase. Thermal analysis data for the polydimethylsiloxane rubber composite with an α-quartz dispersed reinforcing phase showed that the composite exhibited weight loss primarily in the temperature range of 480–640°C. A comparison of the thermal analysis results showed that the material exhibited approximately 10% higher weight loss resistance when tested over a 70°C increased temperature range compared to a composite based on polymethylphenylsiloxane rubber filled with silicon nitride. It has been shown that the optimal operating temperature for this composite is heating up to 300°C. However, varying the heating rate until reaching the vacuum annealing temperature can not only reduce sample mass loss after vacuum annealing but also significantly reduce the degradation of the discharge chamber material during operation at temperatures up to 400°C.","PeriodicalId":629,"journal":{"name":"Journal of Experimental and Theoretical Physics","volume":"142 1","pages":"7 - 13"},"PeriodicalIF":0.8,"publicationDate":"2026-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147720899","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

Effect of the Active Electrode Geometric Properties on Calculating the I–V Characteristics of the Corona Discharge 有源电极几何特性对电晕放电I-V特性计算的影响

IF 0.8 4区物理与天体物理

Journal of Experimental and Theoretical Physics Pub Date : 2026-03-31 DOI: 10.1134/S1063776125601880

A. Y. Wardaya, Z. Muhlisin, J. Windarta, P. Triadyaksa, S. Hadi

{"title":"Effect of the Active Electrode Geometric Properties on Calculating the I–V Characteristics of the Corona Discharge","authors":"A. Y. Wardaya, Z. Muhlisin, J. Windarta, P. Triadyaksa, S. Hadi","doi":"10.1134/S1063776125601880","DOIUrl":"10.1134/S1063776125601880","url":null,"abstract":"The motivation for this research is the need for practical and scalable current–voltage (I–V) characterization of plasma discharges in various plasma devices, such as electrostatic precipitators. Analytical calculations of DC corona discharge I–V characteristics using geometric properties are much simpler than physical calculation models. The novelty of this research is the use of a three-dimensional active electrode, with the space below the active electrode filled with air and a dielectric. The passive electrode is positioned horizontally at the lowest point of all electrode equipment systems. The use of geometric properties in plasma discharge is based on the massive plasma flow at the sharp bottom end of the active electrode, which is achieved by generating a sharpness factor of the form k, incorporated into the integration result of the modified capacitance calculation. Python graphical user interface (GUI) programming creates a simulation graph of the I‒V characteristics, with the k factor as the fitting parameter, and the standard deviation (SD) and t-test as the curve accuracy factors. There are three graphs for the hemispherical shell to plane (HS-P) configuration model and two graphs for the hemispherical bowl to plane (HSB-P) configuration model, with all graphs meeting a sufficient level of accuracy between the data points and the simulation curve (t-test value ≤ 0.05) with the best and worst curves being produced by the HS-P configuration model with a spherical shell radius of 0.04 m (SD = 0.8903) and 0.025 m (SD = 2.3399), respectively.","PeriodicalId":629,"journal":{"name":"Journal of Experimental and Theoretical Physics","volume":"142 1","pages":"21 - 29"},"PeriodicalIF":0.8,"publicationDate":"2026-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147721047","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

New Approaches to Modeling Pressure Changes during the Flow of Compressed Air between Connected Volumes 压缩空气在连接体之间流动过程中压力变化建模的新方法

IF 0.8 4区物理与天体物理

Journal of Experimental and Theoretical Physics Pub Date : 2026-03-31 DOI: 10.1134/S1063776125601685

P. Yu. Ivanov, D. V. Osipov, K. E. Pronin, A. S. Kovshin, E. Yu. Dulsky, I. A. Kudyarov

{"title":"New Approaches to Modeling Pressure Changes during the Flow of Compressed Air between Connected Volumes","authors":"P. Yu. Ivanov, D. V. Osipov, K. E. Pronin, A. S. Kovshin, E. Yu. Dulsky, I. A. Kudyarov","doi":"10.1134/S1063776125601685","DOIUrl":"10.1134/S1063776125601685","url":null,"abstract":"This paper is dedicated to developing a new approach to modeling pressure redistribution during compressed air flow between connected volumes. The proposed modeling methodology is based on an energy approach, similarity theory, and motion theory. This method for calculating pressure changes is designed for modeling both general-purpose industrial pneumatic systems and calculating the pneumatic brake systems of automobile and rail vehicles. The advantage of this new approach is that the main calculation parameters are the reservoir volume and the diameter of the inlet and bypass ports, i.e. these parameters can be pre-calculated without the need for specialized instruments. Furthermore, a coefficient is introduced into the model for adjusting the air wave velocity, which allows for simple functions to improve modeling accuracy and describe the characteristics of air flow through non-standard channels. Experimental studies have shown that the model has a sufficiently high convergence, and the relative error does not exceed 1.5%. Consequently, this method of modeling pneumatic processes can be used to simulate the operation of components and assemblies of general-purpose pneumatic systems, as well as brake equipment for motor car and railway rolling stock. It will also simplify the process of developing “digital twins” for these systems.","PeriodicalId":629,"journal":{"name":"Journal of Experimental and Theoretical Physics","volume":"142 1","pages":"14 - 20"},"PeriodicalIF":0.8,"publicationDate":"2026-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147721048","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