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Effective removal of global tilt from atomically-resolved topography images of vicinal surfaces with narrow terraces
Ultramicroscopy. 2024. Vol. 267. Article 114053.
Aladyshkin A. Y., Chaika A. N., Semenov V. N., A.M. Ionov, Bozhko S.
The main feature of vicinal surfaces of crystals characterized by the Miller indices(ℎℎ𝑚)is rather small width(less than 10 nm) and substantially large length (more than 200 nm) of atomically-flat terraces. This makesdifficult to apply standard methods of image processing and correct visualization of crystalline lattices at theterraces and multiatomic steps. Here we consider two procedures allowing us to minimize effects of bothsmall-scale noise and global tilt of sample: (i) analysis of the difference of two Gaussian blurred images, and(ii) subtraction of the plane, whose parameters are determined by optimization of the histogram of the visibleheights, from raw topography image. It is shown that both methods provide nondistorted images demonstratingatomic structures on vicinal Si(556) and Si(557) surfaces
Сказочкин А. В., Бондаренко Г.Г., Гайдар А. И. et al., Перспективные материалы 2026 № 11 С. 60–75
Рассмотрены механизмы структурно-фазовой перестройки и физико-химические
процессы при формировании износостойких и коррозионно-пассивных покрытий на
чугуне ВЧ40 комбинированной технологией, сочетающей ультразвуковое пластическое
деформирование и электроискровое легирование (ЭИЛ). Образцы модифицировали
ультразвуковым индентором (УЗИ) в среде микрочастиц SiO2 (5 мкм) под давлением
400 МПа с последующим ЭИЛ графитовым и твердосплавным (ВК8) электродом. Структуру,
состав и микротвердость изучали методами сканирующий электронный микроскопии
совмещенной с энергодисперсионной рентгеновской ...
Added: October 16, 2026
Gordin V. A., Efremenko D., Boundary-Layer Meteorology 2026 Vol. 192 No. 51
An inverse problem of reconstructing the turbulent exchange tensor from large archives of observed wind profiles within the Åkerblom–Ekman (A-E) model framework is investigated using high-vertical-resolution radiosonde observations. The reconstructed tensor provides improved agreement between modeled and observed wind profiles compared to classical formulations based on real turbulent exchange coefficient. Instead of the classical A-E ...
Added: October 16, 2026
Kuznetsov A. P., Sedova Y. V., Stankevich N., Chaos, Solitons and Fractals 2026 Vol. 213 No. 12 Article 119309
We analyze the interaction of a quasi-periodic subsystem, in which two-, three-, and four- frequency quasi-periodic oscillations are possible, with a chaotic subsystem. A discrete version is obtained via the Euler scheme from the corresponding flow model. The dynamics of individual subsystems are discussed, including quasi-periodic bifurcations of invariant tori and the occur rence of ...
Added: October 16, 2026
Aleksei Samarin, Nazarenko A., Nazarenko D. et al., Machine Learning and Knowledge Extraction 2026 Vol. 8 No. 10 Article 330
Automated microscopic image analysis is essential for quantitative microbiology, yet manual acquisition and generic recognition models struggle with morphological variability and scene artifacts. We address both ends of this pipeline. First, we present a low-cost, open-source acquisition system, based on an Arduino UNO R3 microcontroller and NEMA 17 stepper motors, that automates focusing, magnification, and ...
Added: October 14, 2026
Parkhomenko V., Kulikova S., Buzmakov A. V., Lobachevskii Journal of Mathematics 2026 Vol. 47 No. 6 P. 2979–2992
The stability of formal concepts and its generalization as robustness are considered in the paper. We use an approximation of stability in the form of Δ-measure for fast calculations. A computationally efficient method for calculating robustness based on subcontexts is presented. We also present a new method to analytically evaluate the number of preimages for ...
Added: October 14, 2026
Kuznetsov A. P., Sedova Y. V., Sataev I. R. et al., Mathematics and Computers in Simulation 2027 Vol. 2 P. 574–592
Universal bifurcation structures on the parameter plane of nonlinear systems, known as shrimps, are discussed. An overview of numerous examples from various fields of science is given. Shrimps are typical for both maps of different dimensions and flows. The varieties of shrimp are discussed and relevant examples are given. The similarity property on the parameter ...
Added: October 14, 2026
Dmitriev A., Kornilov V., Batienkov R., Lecture Notes in Civil Engineering 2026 Vol. 886 P. 249–255
Numerous studies have provided compelling evidence that the probability distribution of avalanche sizes follows a power law, and that 1/f noise is present in the stochastic dynamics of landslides. We present a theoretical explanation of these phenomena within the framework of self-organized criticality theory, proposing a discrete-time model in the form of a sandpile cellular ...
Added: October 13, 2026
Pakhomova A., Вестник Московского университета. Серия 9: Филология 2026 № 1 С. 162–177
Beginning in the mid-1920s Aleksandr Vvedensky, Daniil Kharms,
and Konstantin Vaginov became acquainted with the circle of the poet, writer, and
playwright Mikhail Kuzmin, and by the close of this decade, they became regular
visitors to his residence. The interactions between Kuzmin and the Oberiuts has
been sufficiently developed; however, numerous studies have shifted the focus to the
pragmatics of ...
Added: April 1, 2026
B.V. Andryushechkin, Павлова Т. В., В.М. Ш. et al., Physical Chemistry Chemical Physics 2026 Vol. 28 No. 1 P. 47–51
The early stage of molecular oxygen adsorption on the Ag(100) surface was reexamined with scanning tunneling microscopy (STM) and density functional theory. Using an oxygen-functionalized STM tip, we demonstrated that the simple interpretation of the individual objects randomly distributed over the surface as chemisorbed oxygen atoms is incompatible with the cross-shaped structures observed in atomic-resolution ...
Added: February 17, 2026
B. V. Andryushechkin, Pavlova T. V., Shevlyuga V. M. et al., Physics of Wave Phenomena 2025 Vol. 33 No. 6 P. 424–433
Adsorption of molecular oxygen on the Ag(111) surface at room temperature has been studied using scanning tunneling microscopy (STM), Auger-electron spectroscopy (AES), temperature programmed desorption (TPD), and density functional theory (DFT). In the early stage of adsorption, the STM images show formation of a disordered phase in the form of dark spots (local oxide (Ag6O6) ...
Added: February 17, 2026
B.V. Andryushechkin, Denisenkov V. S., Komarov N. S. et al., Surface Science 2025 Vol. 760 Article 122769
Adsorption of iodine on Ag(110) has been studied in ultra high vacuum with room temperature scanning tunneling microscopy (STM) and low energy electron diffraction (LEED) in combination with density functional theory (DFT) calculations. It was found that at low coverages iodine forms structure. Further adsorption of iodine leads to compression of atoms in the troughs along direction and formation of domain walls separating domains. As ...
Added: February 17, 2026
Vergeles S. S., Levchenko A., Parfenyev V., Успехи физических наук 2025 Т. 195 № 11 С. 1199–1220
Attenuation of surface waves due to viscous dissipation is accompanied by the excitation of slow vortex currents due to the conservation of total momentum. We present a theoretical model for small-amplitude waves that explains experiments on vortex flow generation by crossing waves. Special attention is paid to the effect of surface contaminants, which is accounted ...
Added: November 9, 2025
Pavlova T., Shevlyuga V. M., Physical Chemistry Chemical Physics 2025 Vol. 27 No. 43 P. 23421–23427
Phosphorus diffusion on a Si(100) surface was studied using scanning tunneling microscopy (STM) at temperatures of 77 and 300 K. The phosphorus source utilized was the PBr_3 molecule, which fully dissociates on the surface at 77 K. We observed diffusion of P atoms both along and across the rows of Si dimers. To support the observation ...
Added: October 20, 2025
T. V. Pavlova, Journal of Chemical Physics 2025 Vol. 162 No. 19 P. 194701–194701
Added: June 27, 2025
Pavlova T., Shevlyuga V. M., Journal of Chemical Physics 2024 Vol. 160 No. 5 Article 054701
For the most precise incorporation of single impurities in silicon, which is utilized to create quantum devices, a monolayer of adatoms on the Si(100) surface and a dopant-containing molecule are used. Here we studied the interaction of a phosphorus tribromide with a chlorine monolayer with mono- and bivacancies in a scanning tunneling microscope (STM) at ...
Added: July 2, 2024
B. V. Andryushechkin, Loginov B. A., Physics of Wave Phenomena 2023 Vol. 31 No. 2 P. 67–73
Structural transformations under chlorine adsorption on the Ag(100) surface have been studied with scanning tunneling microscopy (STM) and within the density functional theory (DFT) calculations. The DFT method reveals that the preferable adsorption site of chlorine atoms is the fourfold hollow position. The STM technique is used to study the disorder-order structural phase transition occurring ...
Added: March 24, 2024
B. V. Andryushechkin, Pavlova T. V., Shevlyugaa V. M., Physical Chemistry Chemical Physics 2024 Vol. 26 No. 2 P. 1322–1327
The atomic structure of the Ag(111)-p(4 × 4)-O phase was reexamined with scanning tunneling microscopy (STM) and density functional theory. We discovered two different phases with the same (4 × 4) periodicity and demonstrated that the accepted Ag6 model is incompatible with high-resolution oxygen-sensitive STM images. Using bias dependencies of the STM images, we have shown ...
Added: March 24, 2024
T. V. Pavlova, V. M. Shevlyuga, Journal of Chemical Physics 2023 Vol. 159 No. 21 Article 214701
The interaction of the PBr3 molecule with Si dangling bonds (DBs) on a chlorinated Si(100) surface was studied. The DBs were charged in a scanning tunneling microscope (STM) and then exposed to PBr3 directly in the STM chamber. Uncharged DBs rarely react with molecules. On the contrary, almost all positively charged DBs were filled with molecule fragments. ...
Added: January 29, 2024
Berman S., Zhussupbekova A., Walls B. et al., Physical Review B: Condensed Matter and Materials Physics 2023 Vol. 107 No. 16 Article 165425
The niobium surface is almost always covered by a native oxide layer which greatly influences the performance
of superconducting devices. Here we investigate the highly stable niobium oxide overlayer of Nb(110), which is
characterized by its distinctive nanocrystal structure as observed by scanning tunneling microscopy (STM). Our
ab initio density functional theory (DFT) calculations show that a subtle ...
Added: December 24, 2023
Chekmazov S. V., Zagitova A. A., Ionov A. M. et al., Journal of Surface Investigation: X-Ray, Synchrotron and Neutron Techniques 2023 Vol. 17 No. 3 P. 620–624
The electronic and atomic structure and transport properties of black phosphorus single crystals prepared by high-pressure and gas-transport methods were studied by X-ray photoelectron spectroscopy and scanning probe microscopy (STM, AFM). The atomic resolution of the single crystal surface was obtained by scanning tunneling microscopy. After exposure of the clean surface under ambient conditions, the ...
Added: December 19, 2023
Никонов Э. Г., Назмитдинов Р. Г., Глуховцев П. И., Поверхность. Рентгеновские, синхротронные и нейтронные исследования 2023 № 2 С. 71–76
The problem of finding equilibrium configurations of similarly charged particles (ions) induced by
external electrostatic fields in planar systems is of great interest for fundamental and applied research. In this
paper, the results of numerical analysis of equilibrium configurations of negatively charged particles (electrons)
confined in a circular region by an infinite external potential at its boundary are ...
Added: July 19, 2023
Vladimir M. Shevlyuga, Vorontsova Y., Tatiana V. Pavlova, Journal of Physical Chemistry C 2023 Vol. 127 No. 19 P. 8978–8983
The adsorption of PBr3 on the Si(100)-2 × 1 surface was studied by scanning tunneling microscopy (STM) and density functional theory (DFT). The PBr3 molecule completely dissociates on the Si(100) surface at room temperature into P and Br atoms. In most cases, the dissociated molecule was observed in STM on three neighboring Si dimers. DFT calculations confirm ...
Added: May 29, 2023
Pavlova T., Shevlyuga V. M., Andryushechkin B. V. et al., Applied Surface Science 2022 Vol. 591 Article 153080
Halogen monolayer on a silicon surface is attracting active attention for applications in electronic device fabrication with individual impurities. To create a halogen mask for the impurities incorporation, it is desirable to be able to remove a single halogen atom from the surface. We report the desorption of individual halogen atoms from the Si(100)-2 × 1-Cl and -Br surfaces in ...
Added: June 22, 2022