Russian Physics Journal最新文献_第10页

Effect of different impact velocities on mechano-luminescence of natural calcite for mechanical sensors 不同冲击速度对天然方解石机械发光的影响

IF 0.4 4区物理与天体物理

Russian Physics Journal Pub Date : 2025-12-15 DOI: 10.1007/s11182-025-03591-0

Wei Peng, Faithfulstar K Bani, Janita Saji, Rocky Maximillian Pohlong Lamare, Guoqing Hu, Vikas Dubey

{"title":"Effect of different impact velocities on mechano-luminescence of natural calcite for mechanical sensors","authors":"Wei Peng, Faithfulstar K Bani, Janita Saji, Rocky Maximillian Pohlong Lamare, Guoqing Hu, Vikas Dubey","doi":"10.1007/s11182-025-03591-0","DOIUrl":"10.1007/s11182-025-03591-0","url":null,"abstract":"<div><p>This paper studies the mechanoluminescence (ML) behavior of natural calcite under varying impact velocities to assess its potential use in passive mechanical sensing. Calcite samples obtained from Byrnihat, Meghalaya (26°03′03.8″N 91°52′11.0″E), were analyzed using X‑ray diffraction, field emission scanning electron microscopy, energy-dispersive X‑ray spectroscopy, and Fourier-transform infrared spectroscopy. The analysis confirms the formation of the nanocrystalline hexagonal phase with minor impurities that affect its luminescent properties. When subjected to the mechanical impact, the calcite consistently produces a sharp ML peak around 17 ms, regardless of the impact speed. The emitted light intensity shows a linear dependence on the impact velocity, suggesting a reliable correlation between the mechanical input and optical response. The emission decay follows a first-order exponential pattern, supporting its usefulness for identifying short-duration force events. A plot of time against the logarithm of intensity displays a clear negative slope, supporting this kinetic model. These research findings highlight the potential of natural calcite as a reliable and environmentally friendly material for mechanical sensor applications.</p></div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"68 10","pages":"1548 - 1557"},"PeriodicalIF":0.4,"publicationDate":"2025-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145969507","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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Simulations of the best thickness and temperature for perovskite CH3NH3SnI3-based solar cells with absorber layers 具有吸收层的钙钛矿ch3nh3sni3基太阳能电池的最佳厚度和温度的模拟

IF 0.4 4区物理与天体物理

Russian Physics Journal Pub Date : 2025-12-15 DOI: 10.1007/s11182-025-03645-3

Heera Ram, Rama Shankar Singh, Ajaya Kumar Singh

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Steady-state current-voltage characteristics and electric field profiles in multi-element HR-GaAs:Cr X-ray sensors 多元素HR-GaAs:Cr x射线传感器的稳态电流-电压特性和电场分布

IF 0.4 4区物理与天体物理

Russian Physics Journal Pub Date : 2025-12-15 DOI: 10.1007/s11182-025-03643-5

K. A. Chashtanov, A. E. Vinnik, A. N. Zarubin, P. V. Kosmachev, I. D. Chsherbakov, Y. S. Petrova, M. S. Skakunov, O. P. Tolbanov, A. V Tyazhev, L. K. Shaimerdenova, A. V. Shemeryankina, M. S. Trofimov, T. A. Mikhailov

{"title":"Steady-state current-voltage characteristics and electric field profiles in multi-element HR-GaAs:Cr X-ray sensors","authors":"K. A. Chashtanov, A. E. Vinnik, A. N. Zarubin, P. V. Kosmachev, I. D. Chsherbakov, Y. S. Petrova, M. S. Skakunov, O. P. Tolbanov, A. V Tyazhev, L. K. Shaimerdenova, A. V. Shemeryankina, M. S. Trofimov, T. A. Mikhailov","doi":"10.1007/s11182-025-03643-5","DOIUrl":"10.1007/s11182-025-03643-5","url":null,"abstract":"<div><p>This paper presents the results of calculations and experimental investigations of steady-state current-voltage characteristics and electric field distribution made for single-element (pad) and multi-element X‑ray sensors based on high-resistive chromium-compensated gallium arsenide (HR-GaAs:Cr). Experimental IV-curves of pad sensors have been used to verify and optimize the calculation model. The model was optimized by varying the concentration of thermal acceptors and potential barrier height. The main criterion of optimization was the best agreement between the calculated and measured IV characteristics of the pad sensors. Furthermore, we applied the optimized model to calculate the IV-curves and electric field strength profiles within pixel sensors. Reults of our calculations reveal that in the voltage range from 0.05 to 1 V, the dark current is governed by both the electron and hole components; however, at voltages above 10 V, the contribution of holes to the dark current prevails. It is demonstrated that the distribution of the electric field strength within the sensor volume remains unchanged when the temperature varies from +25 to +50 °C.</p></div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"68 11","pages":"1975 - 1983"},"PeriodicalIF":0.4,"publicationDate":"2025-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146007232","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

Multiscale (micro, meso, nano) structural states in the V-Cr-W-ZrC alloy under conditions of homogeneous deformation in the BCC → HCP → BCC transformations 均匀变形条件下V-Cr-W-ZrC合金在BCC→HCP→BCC相变中的多尺度（微、中、纳米）结构态

IF 0.4 4区物理与天体物理

Russian Physics Journal Pub Date : 2025-12-15 DOI: 10.1007/s11182-025-03629-3

A. N. Tyumentsev, I. A. Ditenberg, I. V. Smirnov, Yu. P. Pinzhin, K. V. Grinyaev, V. M. Chernov

引用次数: 0

Development of a low-temperature Stirling cycle engine for an autonomous solar cogeneration plant 自主太阳能热电联产电厂低温斯特林循环发动机的研制

IF 0.4 4区物理与天体物理

Russian Physics Journal Pub Date : 2025-12-15 DOI: 10.1007/s11182-025-03558-1

Y. Z. Sarsikeyev, A. D. Mekhtiyev, A. E. Angsapov, A. D. Alkina, R. T. Shaimerdenova, T. N. Sharipov

{"title":"Development of a low-temperature Stirling cycle engine for an autonomous solar cogeneration plant","authors":"Y. Z. Sarsikeyev, A. D. Mekhtiyev, A. E. Angsapov, A. D. Alkina, R. T. Shaimerdenova, T. N. Sharipov","doi":"10.1007/s11182-025-03558-1","DOIUrl":"10.1007/s11182-025-03558-1","url":null,"abstract":"<div><p>This article presents the design and development of a low-temperature Stirling engine with external heat supply intended for use in autonomous cogeneration power systems. The engine utilizes thermal energy from a solar collector, which heats the working fluid to temperatures ranging from 90 to 100 °C. A key innovation of the proposed system lies in the significantly increased swept volume of the displacer, which exceeds the volume of the power piston by a factor of 20 to 40. This configuration enables stable engine operation under relatively low temperature differentials between the heater and the cooler. Experimental investigations, supported by results of numerical modeling, confirmed the feasibility and efficiency of the proposed design. Under operating conditions with a temperature differential of approximately 65–75 °C and a working fluid pressure of up to 0.3 MPa, the engine demonstrated a mechanical output ranging from 5 to 15 W, with a corresponding thermal efficiency of 2 to 4%. Notable performance improvements were observed when air was replaced by helium as the working medium and a regenerator was incorporated into the system. The cogeneration capability of the system is realized through the recovery and utilization of residual heat from the cooling circuit for space heating and domestic hot water supply. The engine is designed for fully autonomous operation in remote or off-grid areas, including rural settlements, greenhouse complexes, and other energy-demanding infrastructures. When integrated with a solar collector and thermal energy storage unit, the system offers the potential for continuous, around-the-clock electricity and heat generation.</p></div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"68 8","pages":"1277 - 1284"},"PeriodicalIF":0.4,"publicationDate":"2025-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145904459","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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Effect of holding time at 900 °C on the microstructure and mechanical properties of additively manufactured ti4Al3V alloy 900 °C保温时间对增材制造ti4Al3V合金组织和力学性能的影响

IF 0.4 4区物理与天体物理

Russian Physics Journal Pub Date : 2025-12-15 DOI: 10.1007/s11182-025-03637-3

A. O. Panfilov, A. V. Nikolaeva, A. P. Zykova, A. V. Vorontsov

引用次数: 0

Parametric simulation and experimental analysis of molten pool characteristics of EN24 steel during laser beam welding EN24钢激光焊接熔池特性参数模拟与实验分析

IF 0.4 4区物理与天体物理

Russian Physics Journal Pub Date : 2025-12-15 DOI: 10.1007/s11182-025-03633-7

Piyush Rai, Pradeep Kumar, Mohd Zaheer Khan Yusufzai, Meghanshu Vashista

{"title":"Parametric simulation and experimental analysis of molten pool characteristics of EN24 steel during laser beam welding","authors":"Piyush Rai, Pradeep Kumar, Mohd Zaheer Khan Yusufzai, Meghanshu Vashista","doi":"10.1007/s11182-025-03633-7","DOIUrl":"10.1007/s11182-025-03633-7","url":null,"abstract":"<div><p>The laser weld quality significantly correlates with characteristics of the molten pool forming during the process. This paper aims at understanding and predicting the molten pool characteristics in the EN24 steel, a high-strength alloy widely used in demanding applications. The applied dual approach includes (1) the numerical simulation in COMSOL Multiphysics for the heat transfer and the molten pool behavior and (2) a series of welding experiments with the EN24 steel. A Taguchi L9 orthogonal array design is used in the experiments, systematically varying two key factors, namely the laser power (1500, 1650, 1800 W) and scanning speed (10, 14, 18 mm/s), each at three distinct levels. The numerical simulation focused on the heat transfer in solids, offers information about how these parameters affect the molten pool width, depth, and overall shape. Experimental validation based on the metallographic analysis of weld cross-sections, verifies modeling patterns. This integrated approach not only validates the predictive power, but also provides a better understanding of the complex relationship between welding parameters and the molten pool morphology in the EN24 steel, giving a way for more efficient process optimization and the higher weld quality.</p></div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"68 11","pages":"1895 - 1904"},"PeriodicalIF":0.4,"publicationDate":"2025-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146007275","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

Hydrogen bond breakage in DNA molecules induced by nonuniform energy distribution 非均匀能量分布诱导DNA分子氢键断裂

IF 0.4 4区物理与天体物理

Russian Physics Journal Pub Date : 2025-12-15 DOI: 10.1007/s11182-025-03646-2

O. M. Lyasota, G. F. Kopytov, O. A. Leontyeva, A. V. Moiseev, H. L. Hernandez-Caceres, A. A. Dorohova

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Heat treatment effect on Nb-Al powder mixture after different durations of its high-energy mechanical activation 不同热处理时间对Nb-Al粉末混合物高能机械活化的影响

IF 0.4 4区物理与天体物理

Russian Physics Journal Pub Date : 2025-12-10 DOI: 10.1007/s11182-025-03620-y

A. D. Ishkov, D. A. Osipov, I. A. Ditenberg

引用次数: 0

Thermal stability of the microstructure and microhardness of ferritic-martensitic steel after controlled thermomechanical treatments 铁素体-马氏体钢控制热处理后显微组织和显微硬度的热稳定性

IF 0.4 4区物理与天体物理

Russian Physics Journal Pub Date : 2025-12-10 DOI: 10.1007/s11182-025-03630-w

V. V. Osipova, N. A. Polekhina, I. Yu. Litovchenko, V. M. Chernov, I. S. Kamantsev

{"title":"Thermal stability of the microstructure and microhardness of ferritic-martensitic steel after controlled thermomechanical treatments","authors":"V. V. Osipova, N. A. Polekhina, I. Yu. Litovchenko, V. M. Chernov, I. S. Kamantsev","doi":"10.1007/s11182-025-03630-w","DOIUrl":"10.1007/s11182-025-03630-w","url":null,"abstract":"<div><p>The structural-phase state and microhardness of 12% chromium reduced-activation ferritic-martensitic steel have been investigated after thermomechanical treatments involving deformation in the austenitic region at various temperatures, followed by aging at 700 °C for 100 h. For the three studied deformation temperatures (1100, 1000, and 900 °C), the steel microstructure after aging is qualitatively similar: martensitic laths are located within the former austenite grains, with M<sub>23</sub>C<sub>6</sub> carbide particles along their boundaries and MX carbonitrides inside the structural elements. The former austenite grains do not change in size during aging, while the average width of the martensitic laths increases by a factor of 2.5. The size and volume fraction of the MX particles remain unchanged after aging. However, aging leads to the intense precipitation and growth of M<sub>23</sub>C<sub>6</sub> carbide particles. The steel microstructure after plastic deformation at 1000 °C is the most stable under aging conditions at 700 °C for 100 h. In this structural state, the smallest average sizes of carbide phase particles and a higher dislocation density are observed compared to deformation at other temperatures. These microstructural changes result in a 2–2.5-fold decrease in the steel microhardness values after aging compared to the state after deformation and quenching.</p></div>","PeriodicalId":770,"journal":{"name":"Russian Physics Journal","volume":"68 11","pages":"1870 - 1876"},"PeriodicalIF":0.4,"publicationDate":"2025-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146007065","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