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 was grown by the method of substitution of atoms on silicon. The electroluminescence from the edge channels of nanostructures is induced due to the longitudinal drain-source current. The electroluminescence spectra obtained in the terahertz frequency range, 3.4, 0.12 THz, arise due to the quantum Faraday effect. Within the framework of the proposed model, the longitudinal current induces a change in the number of magnetic flux quanta in the edge channels, which leads to the appearance of a generation current in the edge channel and, accordingly, to terahertz radiation.

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 longitudinal voltage is recorded at room temperature by varying the drain-source current in the device structure performed in a Hall geometry. In the frameworks of proposed model based on the quantum Faraday effect the incident radiation results in the appearance of a generated current in the edge channels with a change in the number of magnetic flux quanta and in the appearance of features in the kinetic dependence of the longitudinal voltage. The generation of intrinsic terahertz irradiation inside the silicon carbide nanostructures is also revealed by the electrically-detected electron paramagnetic resonance (EDEPR) measured the longitudinal voltage as a function of the magnetic field value.

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 irradiation was used in addition to drug therapy for the treatment of patients with COVID-19, which made it possible to reduce the patient’s stay in the intensive care unit, reduce the time of patient intubation and stay on mechanical ventilation, and reduce the radiological and pharmacological burden on the patient. An idea was obtained about the resonant response of a living biological tissue to THz irradiation, which made it possible to formulate requirements for irradiation parameters depending on the characteristics of the biological tissue under study. The characteristics of resonant frequencies for the pulmonary alveoli were determined, which made it possible to develop and use the proposed treatment method for the treatment of pneumonia caused by COVID-19.

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 compounds. For the first time, the results indicate a clinically significant increase in the life span of mice, the control terms for the development of end-stage renal disease and death, as well as an increase in the survival of mice by 50%. Long-term consequences that form in the period after therapy with antidotes / chelators of toxic metals can be prevented or significantly weakened by the proposed method of physiotherapy, which can solve many problems facing society, both in ensuring occupational health and the health of the population as a whole in case of accidents at nuclear power facilities. Keywords: occupational health, broadband terahertz irradiation, GHz modulation, poisoning with depleted uranium compounds, mouse survival.

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 terahertz irradiation and a receiver of reflected and/or radiated from biological tissue. It has been demonstrated that recording the current-voltage characteristics of a silicon nanosandwich made it possible to analyze changes in the thyroid gland, thereby determining the degree and nature of changes caused by the COVID-19 disease.. Keywords: silicon nanosandwich, terahertz irradiation, current-voltage characteristic, COVID-19.

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 block diagram and design of a terahertz emitter and a controlled current source for its power supply are presented, along with specialized software for selecting and setting the amplitude and time parameters of the stimulating signal.

The paper studied the dependence of the magnitude of the magnetic field induced in the contour formed by the edge channels of the silicon nanosandwich structure on the magnitude of the external magnetic field used for pre-magnetization. The measurements were carried out using a fluxgate magnetometer inside a magnetic screen, which ensures the value of the variation in the magnetic field induction no more than 0.1 nT. The experimental results obtained are in good agreement with preliminary estimates that take into account the energy of negative-U dipoles, and thus confirm the defining role of the spin-orbit interaction in quantum transport in the edge channels of the silicon nanosandwich structure. The presence of nanomagnetism in the contour of the edge channels of nanosandwich structures based on the classical semiconductor silicon, which were created using planar technology methods widely used to create processors and various integrated circuits, is demonstrated for the first time.

The conductance dependences of the edge channels of silicon nanosandwich structures (SNS) on the vertical gate voltage Vg are studied. The experiments are carried out in such a range of Vg, in which the two-dimensional density of holes p2D is stable that made it possible to avoid the changes of the Fermi level position and thereby to unambiguously identify the Aharonov-Casher oscillations. The effect of a spin field-effect transistor at a high temperature (T = 77 K) is demonstrated, which manifests itself in the form of Aharonov- Casher oscillations of longitudinal conductance depending on Vg, which controls the Bychkov-Rashba spin-orbit interaction. This experiment became possible due to the high degree of spin polarization of holes and the long spin-lattice relaxation time because of the extremely small width of the silicon quantum well and the narrowness of its edge channels, which is ensured by the properties of the negative-U-barriers limiting them effectively decreasing the electron-electron interaction.

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 interpreted as the de Haas–van Alphen effect at integer and fractional filling factors. Based on the earlier found two-dimensional carrier density of carriers, the critical fields for the corresponding filling factors have been calculated. Simulation of the de Haas–van Alphen oscillations has been performed at a high temperature ( T=300 K) based on the given energy density distribution of the silicon nanosandwich states in the neighborhood of the Landau levels by means of a calculation procedure realized at a supercomputer. The dependence of the effective mass of carriers on the strength of an external magnetic field that we revealed earlier has been taken into account.

Temperature dependences of the longitudinal resistance and heat capacity of silicon carbide epitaxial films grown on monocrystalline silicon substrates by the method of coordinated substitution of atoms are investigated. Peculiarities in the behavior of these dependences have been found at temperatures equal to 56°C, 76°C, 122°C and 130°C. The observed peculiarities of the behavior of heat capacity and longitudinal resistance, considering appearance of a giant value of diamagnetism previously discovered in the samples at these temperatures, are interpreted as phase transitions of charge carriers into a coherent (superconducting, if we consider diamagnetism) state.

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 terahertz irradiation and a receiver of reflected and/or radiated from biological tissue. It has been demonstrated that recording the current-voltage characteristics of a silicon nanosandwich made it possible to analyze changes in the thyroid gland, thereby determining the degree and nature of changes caused by the COVID-19 disease.

At room temperature, a macroscopic quantum galvanomagnetic effect of Faraday electromagnetic induction was demonstrated under conditions of the capture of single magnetic flux quanta in the edge channels, confined by chains of negative-U centers, in a silicon nanostructure heavily doped with boron, prepared in Hall geometry on an n-type Si (100) substrate. It is shown that this effect leads to the appearance of an induction current when only a constant magnetic field is applied in the absence of an externally applied voltage or a stabilized current.

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 irradiation was used in addition to drug therapy for the treatment of patients with COVID-19, which made it possible to reduce the patient's stay in the intensive care unit, reduce the time of patient intubation and stay on mechanical ventilation, and reduce the radiological and pharmacological burden on the patient. An idea was obtained about the resonant response of a living biological tissue to THz irradiation, which made it possible to formulate requirements for irradiation parameters depending on the characteristics of the biological tissue under study. The characteristics of resonant frequencies for the pulmonary alveoli were determined, which made it possible to develop and use the proposed treatment method for the treatment of pneumonia caused by COVID-19.

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 structures (SNS). In the case of the deposition of DNA oligonucleotides into the edge channels of the SNS, a change in the oscillation period is observed. The possibilities of using the obtained data to identify the properties of DNA oligonucleotides are discussed.

The article presents the results of measurement and analysis of the field dependences of the static magnetic susceptibility of thin epitaxial silicon carbide films grown on the (110) surface of single-crystal silicon by the method of the coordinated substitution of atoms. In weak magnetic fields, the occurrence of two quantum effects at room temperature was experimentally found: the hysteresis of the static magnetic susceptibility and, in the field dependences, quantum Aharonov-Bohm oscillations of the static magnetic susceptibility. The simultaneous occurrence of these effects is a consequence of two- and one-particle interference of charge carriers (two-dimensional holes) on microdefects consisting of dipole centers with negative correlation energy (negative-U dipole centers).

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 compounds. For the first time, the results indicate a clinically significant increase in the life span of mice, the control terms for the development of end-stage renal disease and death, as well as an increase in the survival of mice by 50%.Long-term consequences that form in the period after therapy with antidotes / chelators of toxic metals can be prevented or significantly weakened by the proposed method of physiotherapy, which can solve many problems facing society, both in ensuring occupational health and the health of the population as a whole in case of accidents at nuclear power facilities.

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 structures (SNS). In the case of the deposition of DNA oligonucleotides into the edge channels of the SNS, a change in the oscillation period is observed. The possibilities of using the obtained data to identify the properties of DNA oligonucleotides are discussed. Keywords: THz radiation, DNA identification, de Haas-Van Alphen, Aharonov-Bohm.

The response to external terahertz (THz) radiation from the silicon carbide nanostructures prepared by the method of substitution of atoms on silicon is investigated. The kinetic dependence of the longitudinal voltage is recorded at room temperature by varying the drain-source current in the device structure performed in a Hall geometry. In the frameworks of proposed model based on the quantum Faraday effect the incident radiation results in the appearance of a generated current in the edge channels with a change in the number of magnetic flux quanta and in the appearance of features in the kinetic dependence of the longitudinal voltage. The generation of intrinsic terahertz radiation inside the silicon carbide nanostructures is also revealed by the electrically-detected electron paramagnetic resonance (EDEPR) measured the longitudinal voltage as a function of the magnetic field value.

For the first time, electroluminescence was discovered 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 was grown by the method of substitution of atoms on silicon. The electroluminescence from the edge channels of nanostructures is induced due to the longitudinal drain- source current. The electroluminescence spectra obtained in the terahertz frequency range, 3.4, 0.12 THz, arise due to the quantum Faraday effect. Within the framework of the proposed model, the longitudinal current induces a change in the number of magnetic flux quanta in the edge channels, which leads to the appearance of a generation current in the edge channel and, accordingly, to terahertz radiation.

The ability to detect the terahertz (THz) emission from a silicon nanosandwich structure (Si-NS) is demonstrated with the silicon carbide nanostructure (SiC-NS) as a detector. Electrical response in longitudinal voltage of the detector was observed under the constant drain-source current (I ds(DET) ) of the detector.