251 Result(s)
-
Article
Structure, Rock Types, and Reservoir Properties of Altered Permian–Triassic Rhyodacites in Grabens of the Frolov Megadepression in Western Siberia
This article presents results of the comprehensive study (composition, reservoir properties, geophysical parameters, and age) of altered felsic volcanic rocks (rhyolites, dacites) associated with the Permian-T...
-
Article
Raman Scattering Spectroscopy and Photoluminescence of GaAs Nanowires
Experimental data on studying the phonon and optical properties of GaAs nanowires with orientation (111) located on a gold substrate with the help of Raman scattering spectroscopy (RSS) and photoluminescence (...
-
Article
Late Pliocene Gilbert Type Delta and Early Pleistocene Drainage System Changes in the Erzurum Basin, NE Turkiye
The Late Pliocene Gilbert-type delta is described in the western Erzurum Basin (NE Turkiye) and its position in the Late Cenozoic development of the basin is defined. The Erzurum Basin originated no later than...
-
Article
Stratigraphy of Cenozoic Deposits and the History of the Latest Stage of Geological Development of the Zaisan Depression (Eastern Kazakhstan)
The Zaisan Depression is a unique geological structure that preserves the most complete sedimentary record of the Late Mesozoic and most of the Cenozoic. A century of studies brought very rich data on the stra...
-
Article
Endogenous Regeneration of Alveolar Bone by Decellularized Tooth Matrix
The efficiency of bone tissue regeneration by decellularized tooth matrix, demineralized tooth matrix, and commercial xenograft Bio-Oss Spongiosa was compared on the model of a critical-size circular defect in...
-
Article
First LA–ICP–MS Apatite Fission-Track Ages from the Basement of the Siberian Platform (Nepa–Botuoba Anteclise)
The first results of laser ablation inductively-coupled plasma mass-spectrometry apatite fission-track dating are presented from drill core of boreholes, which exposed the top of the Siberian Platform's crysta...
-
Article
Van der Waals Heteroepitaxial Growth of Layered SnSe \({}_{\mathbf{2}}\) on Surfaces Si(111) and Bi \({}_{\mathbf{2}}\) Se \({}_{\mathbf{3}}\) (0001)
Layered SnSe \({}_{2}\) films of nearly 50 and 30 nm in thickness were grown on Si(111) and Bi ...
-
Article
Development of the Southern Coastal Area of the Caspian Sea during the Pliocene–Quaternary According to Biostratigraphic and Magnetostratigraphic Data
The paper considers geological structure of the coastal region of the South Caspian, including paleontological and magnetostratigraphic dating of the Neogene–Quaternary deposits. Western and eastern segments o...
-
Article
Open AccessInterdisk spacing effect on resonant properties of Ge disk lattices on Si substrates
The light reflection properties of Ge disk lattices on Si substrates are studied as a function of the disk height and the gap width between disks. The interdisk spacing effect is observed even at such large ga...
-
Article
Measuring the Interatomic Distance in a Silicon Crystal Lattice Using an Optical Scanning Interferometer
We study the influence of the characteristics of the optical system of an interferometer on the distribution of spectral power density of partially coherent light passing through the system. The results of mea...
-
Article
Scientific Heritage of S. V. Bogdanov
This article is dedicated to the famous physicist, founder of the school of acoustoelectronics and acoustooptics, Corresponding Member of the Russian Academy of Sciences Sergei Vasilievich Bogdanov in connecti...
-
Article
Vertical-Cavity Surface-Emitting Lasers for Miniature Quantum Frequency Standards
The results of the development of vertical-cavity surface emitting lasers based on Al \({}_{x}\) Ga ...
-
Article
Broadband Antireflection Coatings Composed of Subwavelength-Sized SiGe Particles
Antireflection properties of subwavelength-sized dielectric SiGe particles grown on Si(100) substrates using the dewetting phenomenon are studied. The average particle size has been set by the amount of deposi...
-
Article
Low-Frequency Microwave Response of a Quantum Point Contact
The low-frequency microwave photoconductance of a short (100 nm) quantum point contact based on a high-mobility two-dimensional electron gas in the frequency range of 2–3 GHz is investigated for the first time...
-
Article
Specific Features of the Atomic Structure of Iron Silicide Nanocrystals in a Silicon Matrix
All transformation stages of the crystal structure of iron silicide nanocrystals (NCs) on an atomically pure Si(111) surface under varying synthesis conditions have been studied in detail using high-resolution...
-
Article
In Situ Reflection Electron Microscopy for the Analysis of Silicon Surface Processes: Sublimation, Electromigration, and Adsorption of Impurity Atoms
The results of recent studies of the structural morphological transformations of Si(111) and Si(100) surfaces using in situ ultrahigh-vacuum reflection electron microscopy (UHV REM) are presented. It is establ...
-
Article
Biosensors Based on SOI Nanowire Transistors for Biomedicine and Virusology
This article contains the results of research on the topical problem of highly sensitive express registration of biological objects using field-effect transistors with the surface open for analyte access, whic...
-
Article
Paleomagnetism of the Permian–Triassic Siberian Traps Intrusions from the Kulumbe River Valley, Northwestern Siberian Platform
Abstract—The Kulumbe River area occupies a transitional position in the Siberian Traps province due to being located in the junction zone of the structures of the Norilsk region and the Tunguska syncline. The Kul...
-
Article
Photon-Stimulated Transport in a Quantum Point Contact (Brief Review)
Studies of photon-stimulated transport through a quantum point contact based on a high-mobility two-dimensional electron gas in a GaAs quantum well are reviewed. This review includes a brief historical introdu...
-
Article
Volcanic Tuffs and Tuffites in Jurassic–Cretaceous (Volgian–Ryazanian) Boundary Rocks of Western Siberia
Altered ash tuff and tuffite layers in the Jurassic–Cretaceous boundary rocks (Bazhenovo Formation) were studied in detail. These layers represent an interval ranging from the upper part of the middle Volgian ...