Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques最新文献_第6页

On the Transverse Coherence Length in the Theory of Phase-Contrast Imaging of Microobjects Using Synchrotron Radiation 微物体同步辐射相衬成像理论中横向相干长度的研究

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Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques Pub Date : 2026-08-16 DOI: 10.1134/S1027451026700874

V. G. Kohn, M. S. Folomeshkin

引用次数: 0

Temperature-Dependent Modeling of Vacancy Characteristics and Atomic Jump Rates in Tungsten 钨中空位特性和原子跳跃率的温度依赖模型

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Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques Pub Date : 2026-08-16 DOI: 10.1134/S102745102670076X

M. A. Boboqambarova, A. V. Nazarov

{"title":"Temperature-Dependent Modeling of Vacancy Characteristics and Atomic Jump Rates in Tungsten","authors":"M. A. Boboqambarova, A. V. Nazarov","doi":"10.1134/S102745102670076X","DOIUrl":"10.1134/S102745102670076X","url":null,"abstract":"Tungsten is widely considered one of the key candidate materials for the first wall of fusion reactors due to its favorable thermophysical properties. However, its radiation resistance is largely determined by the behavior of point defects, particularly vacancies, especially at high temperatures. In this work, an atomistic study of the thermodynamic and diffusion characteristics of vacancies in tungsten was carried out. The modeling approach combines a modified molecular statics method (MMSM) with molecular dynamics (MD) within the framework of a natural thermostat model. The calculations were performed using the EAM potential. It was found that, starting from the 11th coordination sphere, atomic displacements around the vacancy exhibit a temperature dependence consistent with that of the lattice parameter. Based on this, temperature dependences of vacancy formation energy and formation volume were determined. Additionally, vacancy migration was simulated, allowing for the calculation of the vacancy diffusion coefficient over a wide temperature range. The results provide critical input for modeling defect evolution mechanisms under radiation damage and high-temperatures conditions.","PeriodicalId":671,"journal":{"name":"Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques","volume":"20 2","pages":"333 - 339"},"PeriodicalIF":0.4,"publicationDate":"2026-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148752296","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

Generation of NV– Centers in Diamond Nanostructures: PL, ODMR, and Spin Coherence 金刚石纳米结构中NV中心的产生：PL、ODMR和自旋相干性

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Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques Pub Date : 2026-08-16 DOI: 10.1134/S1027451026700795

V. P. Popov, S. N. Podlesny, V. A. Antonov, Yu. A. Zhivodkov, I. N. Kupriyanov, Yu. N. Palyanov

{"title":"Generation of NV– Centers in Diamond Nanostructures: PL, ODMR, and Spin Coherence","authors":"V. P. Popov, S. N. Podlesny, V. A. Antonov, Yu. A. Zhivodkov, I. N. Kupriyanov, Yu. N. Palyanov","doi":"10.1134/S1027451026700795","DOIUrl":"10.1134/S1027451026700795","url":null,"abstract":"The nanolayers and nanomembranes with the 30–300 thickness and the 0.5 ppm NV– center content were produced by 50 keV ({text{H}}_{2}^{ + }) ion implantation in Ib type (111) diamond plates and vacuum or high pressure annealing with subsequent lift-off process. The similar NV– content nanolayers were formed by N+ ion implantation in IIa type (111) diamond plates and similar annealings. 〈111〉 oriented nanopillars were produced on both types of nanolayers using focused ion beam (FIB) with Ga+ 30 keV maskless milling. The unusual optically detected magnetic resonances (ODMRs) were measured in a single nanopillars with a height of 500‒700 nm and of 250 nm in diameter covered by an amorphous a-C:Ga nanolayer in the 0‒20 G magnetic field. They demonstrated both a significant decrease in the gyromagnetic ratio and the quenching of photoluminescence (PL) signal from the NV– centers inclined to the nanopillar axis by the conductive a‑C:Ga nanolayer and stresses created by it. The multistep O2 RIE plasma etching restored the normal ODMR resonance frequencies and intensities for all four NV–center orientations in (111) diamond nanopillars.","PeriodicalId":671,"journal":{"name":"Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques","volume":"20 2","pages":"356 - 361"},"PeriodicalIF":0.4,"publicationDate":"2026-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148752178","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

The New Method of Matter Stopping Power Calculation for Ion Beams of Medium and Low Energy 中低能离子束物质停止功率计算的新方法

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Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques Pub Date : 2026-08-16 DOI: 10.1134/S1027451026700710

N. N. Mikheev

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Simulation of Glazing Scattering of Na Ions on Metal Surfaces 金属表面Na离子的玻璃化散射模拟

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Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques Pub Date : 2026-08-16 DOI: 10.1134/S1027451026700680

S. S. Moskalenko, Yu. A. Melkozerova, E. Yu. Zykova, N. G. Orlikovskaya, I. K. Gainullin

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Evolution of Glass K-208 Morphology under Electron-Proton Irradiation 电子-质子辐照下玻璃K-208形貌的演变

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Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques Pub Date : 2026-08-16 DOI: 10.1134/S1027451026700758

R. H. Khasanshin, I. S. Kuznezov, S. P. Nikitin, L. S. Novikov

{"title":"Evolution of Glass K-208 Morphology under Electron-Proton Irradiation","authors":"R. H. Khasanshin, I. S. Kuznezov, S. P. Nikitin, L. S. Novikov","doi":"10.1134/S1027451026700758","DOIUrl":"10.1134/S1027451026700758","url":null,"abstract":"AFM methods were used to study the surfaces of K-208 glass plates before and after the separate and combined action of protons with energies Еp = 20 keV and electrons with energies Ее = 20 and 40 keV, respectively. The plates were irradiated in vacuum with pv = 10–4 Pa at flow densities of protons (φp) and electrons (φe) from 109 to 5 × 1011 cm–2 s–1 with fluences Φp and Φe of particles in the range of 2 × 1014‒2 × 1016 cm–2. The results obtained suggest that the nature of changes in the morphology of the samples during separation radiation exposure depends on the values of φe and φp but under the action of electron-proton plasma is largely determined by the ratio of the flux densities α = φe : φp. In particular, if α < 1.5, bubbles filled with H2 molecules form in the near-surface layer of glass. If α > 3, then at the values of particle energy selected for research, discharge channels appear on the glass surface in addition to gas-filled bubbles, and at α > 5, the evolution of the morphology of the irradiated sample surface is mainly due to the appearance of discharge channels on it.","PeriodicalId":671,"journal":{"name":"Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques","volume":"20 2","pages":"325 - 332"},"PeriodicalIF":0.4,"publicationDate":"2026-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148752295","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

Study of Structural Changes in the Rock Surface at the Prefracturing Stage under Dynamic Effects 动力作用下预裂阶段岩石表面结构变化研究

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Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques Pub Date : 2026-08-16 DOI: 10.1134/S1027451026700898

I. Zh. Bunin, A. N. Kochanov

引用次数: 0

Diffraction Grating Based on Implanted Layers of Nanoporous Germanium 基于植入层的纳米多孔锗衍射光栅

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Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques Pub Date : 2026-08-16 DOI: 10.1134/S1027451026700679

A. L. Stepanov, A. M. Rogov, V. F. Sotnikova, V. F. Valeev, V. I. Nuzhdin, D. A. Konovalov

{"title":"Diffraction Grating Based on Implanted Layers of Nanoporous Germanium","authors":"A. L. Stepanov, A. M. Rogov, V. F. Sotnikova, V. F. Valeev, V. I. Nuzhdin, D. A. Konovalov","doi":"10.1134/S1027451026700679","DOIUrl":"10.1134/S1027451026700679","url":null,"abstract":"The present study is devoted to a new technique for creating diffraction gratings based on nanoporous Ge (PGe) layers by irradiating a smooth single-crystal c-Ge (Bi:PGe) substrate with Bi++ ions through a copper mesh mask at an energy of E = 72 keV, an ion beam current density of J = 5 μA/cm2, and a fluence D range from 1.3 × 1015 to 1.3 × 1017 ion/cm2 with the ILU-3 ion accelerator. Morphological and elemental analyses of the Bi:PGe surface for different D values were performed using a high-resolution scanning electron microscope. At D = 1.3 × 1015 ion/cm2, the formation of a porous fraction in the form of vertical honeycombs with nm-sized round holes was detected. When the critical value D = 3.1 × 1015 ion/cm2 is exceeded, a spongy porous structure consisting of intertwining nanowires appears, accompanied by swelling of the Bi:PGe layer instead of the expected sputtering of the c-Ge surface. With increasing D, the nanowires become thinner and the free volume between them increases. The formation of periodic Bi:PGe microstructures on the c-Ge surface was monitored using optical and probe microscopy. The efficiency of the optical diffraction grating was demonstrated by probing it with He–Ne laser radiation.","PeriodicalId":671,"journal":{"name":"Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques","volume":"20 2","pages":"277 - 284"},"PeriodicalIF":0.4,"publicationDate":"2026-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148752173","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

Titanium Alloys as Biomaterials: a Review 钛合金作为生物材料的研究进展

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Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques Pub Date : 2026-08-16 DOI: 10.1134/S1027451026700837

B. B. Straumal, N. Yu. Anisimova, M. V. Kiselevskiy, A. S. Gornakova, O. A. Kogtenkova, A. A. Mazilkin, M. F. Bulatov, E. A. Klyatskina, O. A. González Estrada, L. V. Duong

{"title":"Titanium Alloys as Biomaterials: a Review","authors":"B. B. Straumal, N. Yu. Anisimova, M. V. Kiselevskiy, A. S. Gornakova, O. A. Kogtenkova, A. A. Mazilkin, M. F. Bulatov, E. A. Klyatskina, O. A. González Estrada, L. V. Duong","doi":"10.1134/S1027451026700837","DOIUrl":"10.1134/S1027451026700837","url":null,"abstract":"The human body primarily comprises spontaneously organized polymers like proteins and ceramic materials such as bone minerals. Additionally, trace elements in the form of metals play pivotal roles at the molecular level. Simultaneously, metals and their alloys serve as crucial structural materials for surgical implants, particularly in orthopedics, and their application has recently expanded to other tissues like blood vessels. However, the increased usage of metal implants in medicine has brought about challenges related to their limited lifespan. Metallic biomaterials encompass a variety of alloys: stainless steels, magnesium, titanium, cobalt, nickel-titanium shape memory alloys, as well as tantalum, silver, and zirconium. This review primarily focuses on titanium-based biomaterials, emphasizing critical issues concerning their clinical application. These issues encompass bone integration in porous or structured implants, joint prostheses wear, surface modification of scaffolds and implants, the general toxicity of metal ions released during corrosion, phase composition of titanium-based alloys, and fatigue failure of structures due to repetitive mechanical stress, particularly corrosion fatigue. In conclusion, the review underscores the most significant challenges associated with titanium-based biomaterials, while also highlighting the most promising approaches and strategies to address them.","PeriodicalId":671,"journal":{"name":"Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques","volume":"20 2","pages":"387 - 408"},"PeriodicalIF":0.4,"publicationDate":"2026-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148752244","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

Change in the Electrical Conductivity of the ITO Coating under Irradiation with an Oxygen Plasma Flow 氧等离子体流辐照下ITO涂层电导率的变化

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Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques Pub Date : 2026-08-16 DOI: 10.1134/S1027451026700953

V. N. Chernik, L. S. Novikov, L. A. Zhilyakov

{"title":"Change in the Electrical Conductivity of the ITO Coating under Irradiation with an Oxygen Plasma Flow","authors":"V. N. Chernik, L. S. Novikov, L. A. Zhilyakov","doi":"10.1134/S1027451026700953","DOIUrl":"10.1134/S1027451026700953","url":null,"abstract":"Transparent conductive indium tin oxide films are used in aerospace technology as conductive layers of dielectric thermal control coatings and protective glasses of solar batteries. The electrical conductivity of the surface prevents its differential electrification under the influence of charged particle flows in the Earth’s atmosphere. At the same time, the effect of space factors, including the incident flow of atomic oxygen during flight, on electrical conductivity has not been studied. In this paper, we study transparent conductive indium tin oxide coatings deposited on glass and polyimide film substrates. The effect of the incident flow of atomic oxygen was simulated by irradiating the samples with an oxygen plasma flow. The equivalent fluence of the atomic oxygen, determined by the mass loss of a polyimide film witness sample, served as a measure of the effect. Experiments have shown the effect of a 100‒3000-fold drop in the electrical conductivity of the coating as the equivalent fluence of atomic oxygen increases to 9 × 1021 cm–2. Analysis of the dependence of resistance on fluence has shown that the supposed sputtering of the coating under the influence of the plasma flow is not the dominant mechanism. The probable cause of the degradation of electrical conductivity should be sought in the change in the bulk properties of the semiconductor material.","PeriodicalId":671,"journal":{"name":"Journal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques","volume":"20 2","pages":"480 - 483"},"PeriodicalIF":0.4,"publicationDate":"2026-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148752298","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