64 Result(s)
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Article
N. T. Bagraev
English
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Article
Therapy of Covid Complications with Terahertz Irradiation
The results of the use of terahertz (THz) irradiation generated by a silicon nanosandwich under conditions of a stabilized source-drain current in the treatment of covid complications are presented. THz irradi...
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Terahertz Express Diagnostics of Complications Caused by COVID-19
A spectrometer based on silicon nanosandwiches has been proposed to detect complications caused by COVID-19. Operating in the mode of a balanced photodetector, the silicon nanosandwich is both a source of tera...
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Article
Using Terahertz Irradiation to Mitigate the Effects of Radiation Exposure
Experimental data are presented on the effect of broadband irradiation in the terahertz range, modulated in the gigahertz range, on the survival of mice that have received acute poisoning with depleted uranium...
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Magnetic Properties of Edge Channels of Silicon Nanosandwich Structures with Deposited DNA Oligonucleotides
Measurements of the field dependences of the static magnetic susceptibility demonstrate de Haas-Van Alphen and Aharonov–Bohm oscillations at high temperatures and low magnetic fields in silicon nanosandwich st...
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Terahertz Emission from Silicon Carbide Nanostructures
For the first time, electroluminescence detected in the middle and far infrared ranges from silicon carbide nanostructures on silicon, obtained in the framework of the Hall geometry. Silicon carbide on silicon...
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Registration of Terahertz Irradiation with Silicon Carbide Nanostructures
The response to external terahertz (THz) irradiation from the silicon carbide nanostructures prepared by the method of substitution of atoms on silicon is investigated. The kinetic dependence of the longitudin...
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A Device for Transcutaneous Stimulation of the Diaphragm
Results obtained during the development of an original device for noninvasive transcutaneous stimulation of the diaphragm using electromagnetic radiation in the terahertz frequency range are presented. The blo...
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Analysis of the Experimental Curve of Magnetization of a Silicon Nanosandwich with the Use of Numerical Simulation
The field dependence of the magnetization of a silicon nanosandwich observed at room temperature exhibits quite a complicated character, mainly due to the contribution of the quantum magnetic effect, which is ...
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Article
Phase Transitions in Silicon-Carbide Epitaxial Layers Grown on a Silicon Substrate by the Method of the Coordinated Substitution of Atoms
The temperature dependences of the longitudinal resistance and heat capacity of silicon-carbide epitaxial films grown on single-crystal silicon substrates by the method of ghe coordinated substitution of atoms...
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Magnetic Properties of Thin Epitaxial SiC Layers Grown by the Atom-Substitution Method on Single-Crystal Silicon Surfaces
A cycle of experimental investigations is carried out, specifically, the measurements and analysis of field dependences of the static magnetic susceptibility in samples of single-crystal SiC thin films grown o...
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Description of the Magnetization Oscillations of a Silicon Nanostructure in Weak Fields at Room Temperature. The Lifshitz–Kosevich Formula with Variable Effective Carrier Mass
A formalism of the statistical approach to describing de Haas–van Alphen oscillations known as the Lifshitz–Kosevich formula is developed as applied to a low-dimensional system with an effective carrier mass d...
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Terahertz Radiation Sources and Detectors Based on Optical Microcavities Embedded in the Edge Channels of Silicon Nanosandwiches
Over the past 30 years, there has been a great deal of interest in the use of terahertz (THz) radiation in various fields, such as security systems, communications, and spectroscopy. In addition, THz radiation...
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Terahertz Response of Biological Tissue for Diagnostic and Treatment in Personalized Medicine
A spectrometer based on silicon nanosandwiches (SNSs) is proposed for problems of personalized medicine. SNS structures exhibit properties of terahertz (THz) emitter and receiver of the THz response of biologi...
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De Haas–van Alphen Oscillations of the Silicon Nanostructure in Weak Magnetic Fields at Room Temperature. Density of States
The field dependence of magnetization of a silicon nanosandwich measured at room temperature in weak magnetic fields manifests de Haas–van Alphen oscillations, the behavior of which is explained under the cond...
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Article
Thermodynamic Description of Oscillations of the Magnetization of a Silicon Nanostructure in Weak Fields at Room Temperature. Density of States
The observation of de Haas–van Alphen oscillations when studying the silicon nanostructure at room temperature in weak magnetic fields enables the use of thermodynamic relations to calculate the density of sta...
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Article
Low-Threshold Field Emission from Carbon Structures
The surface of graphene-like structures placed in an electric field with a strength of 1−10 V/μm is found to undergo considerable deformation. This effect is observed in both a direct field (emission current i...
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Dielectric Properties of Oligonucleotides on the Surface of Si Nanosandwich Structures
Planar silicon nanostructures that are formed as a very narrow silicon quantum well confined by delta-barriers heavily doped with boron are used to study the dielectric properties of DNA oligonucleotides depos...
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Article
High Temperature Quantum Kinetic Effects in Silicon Nanosandwiches
The negative-U impurity stripes confining the edge channels of semiconductor quantum wells are shown to allow the effective cooling inside in the process of the spin-dependent transport, with the reduction of the...
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Article
Dielectric properties of DNA oligonucleotides on the surface of silicon nanostructures
Planar silicon nanostructures that are formed as a very narrow silicon quantum well confined by δ barriers heavily doped with boron are used to study the dielectric properties of DNA oligonucleotides deposited...
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Terahertz response of DNA oligonucleotides on the surface of silicon nanostructures
The possibility of identifying DNA oligonucleotides deposited onto the region of the edge channels of silicon nanostructures is considered. The role of various THz (terahertz) radiation harmonics of silicon na...
