33 results match your criteria: "Moscow Technical University[Affiliation]"
Issues with Modeling a Tunnel Communication Channel through a Plasma Sheath.
Sensors (Basel)
January 2022
Faculty of Physics, Lomonosov Moscow State University, 119991 Moscow, Russia.
We consider two of the most relevant problems that arise when modeling the properties of a tunnel radio communication channel through a plasma layer. First, we studied the case of the oblique incidence of electromagnetic waves on a layer of ionized gas for two wave polarizations. The resonator parameters that provide signal reception at a wide solid angle were found.
View Article and Find Full Text PDFIn situ transport characterization of magnetic states in Nb/Co superconductor/ferromagnet heterostructures.
Beilstein J Nanotechnol
August 2021
Department of Physics, Stockholm University, AlbaNova University Center, SE-10691 Stockholm, Sweden.
Employment of the non-trivial proximity effect in superconductor/ferromagnet (S/F) heterostructures for the creation of novel superconducting devices requires accurate control of magnetic states in complex thin-film multilayers. In this work, we study experimentally in-plane transport properties of microstructured Nb/Co multilayers. We apply various transport characterization techniques, including magnetoresistance, Hall effect, and the first-order-reversal-curves (FORC) analysis.
View Article and Find Full Text PDFControlling the proximity effect in a Co/Nb multilayer: the properties of electronic transport.
Beilstein J Nanotechnol
September 2020
Institute of Electronic Engineering and Nanotechnologies ASM, MD2028 Kishinev, Moldova.
Article Synopsis
- The research investigates the proximity effect in superconductor/ferromagnetic superlattices, focusing on how variations in ferromagnetic layer thickness and coercive fields affect superconductivity.
- Using the Usadel equations, the study identifies conditions under which the magnetic alignment of adjacent ferromagnetic layers leads to significant changes in the superconducting order parameter.
- Experimental observations show that the resistive transition of a Nb/Co multilayer exhibits multiple steps, indicating that local magnetization affects superconductive behavior, suggesting potential applications in tunable kinetic inductors for artificial neural networks.
Unipolar magnetic field pulses as an advantageous tool for ultrafast operations in superconducting Josephson "atoms".
Beilstein J Nanotechnol
July 2019
Lomonosov Moscow State University Physics Department, Moscow, 119991, Russia.
Article Synopsis
- A theoretical framework is proposed to understand how ultrafast population transfer and magnetization reversal in superconducting meta-atoms occur when exposed to short magnetic field pulses.
- A method using stimulated Raman Λ-type transitions is suggested to enable rapid quantum operations on the picosecond timeframe.
- An experimental setup for implementing this ultrafast control within a circuit-on-chip is also introduced.
Adiabatic superconducting cells for ultra-low-power artificial neural networks.
Beilstein J Nanotechnol
October 2016
Moscow Technical University of Communications and Informatics (MTUCI), Moscow, 111024, Russia.
Article Synopsis
- The paper suggests using superconducting quantum interferometers to create neural networks that consume very little power.
- These networks utilize special components called Josephson cells, which have activation functions shaped like sigmoid and Gaussian curves.
- The authors focus on optimizing these components for popular types of neural networks, specifically three-layer perceptrons and radial basis function networks.
Distributed self-regulation of living tissue: beyond the ideal limit.
Phys Rev E Stat Nonlin Soft Matter Phys
February 2010
Moscow Technical University of Radioengineering, Electronics, and Automation, Vernadsky 78, 119454 Moscow, Russia.
The present paper is devoted to mathematical description of the vascular network response to local perturbations in the cellular tissue state, being one of the basic mechanisms controlling the inner environment of human body. Keeping in mind individual organs we propose a model for distributed self-regulation of living tissue, which is regarded as an active hierarchical system without any controlling center. This model is based on the self-processing of information about the cellular tissue state and cooperative interaction of blood vessels governing redistribution of blood flow over the vascular network.
View Article and Find Full Text PDF[Quantitative myocardial perfusion assessment with magnetic resonance imaging in patients with coronary artery disease].
Kardiologiia
April 2016
Cardiology Research Complex; ul. Tretiya Cherepkovskaya, 15a, 121552 Moscow, Russia; N. Bauman Moscow Technical University.
Aim: To elucidate feasibility of the absolute myocardial blood flow (MBF), total coronary resistance (TCR), and myocardial blood flow reserve (MBFR) quantification using MRI in patients with coronary artery disease (CAD).
Material And Methods: A total of 19 patients with angiographically documented CAD and 9 healthy subjects were studied by MRI using double-slice saturation-recovery Turbo-FLASH sequence for monitoring myocardial first pass kinetics of Gd-DTPA-BMA at rest and during hyperemia (dipyridamole 0.56 mg/kg).
The sensitivity of the anomalous time dependence of viscosity to the concentration of the DNA-protein complexes (DNA + histone-like proteins of bacteria or, in other words, the genome) such as chromatin and the conformations of these complexes in lysates of E. coli AB1157 cells were studied. A linear region of the anomalous viscosity time dependence on the concentration of E.
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