A5006018676- Carbon Nanotubes in Composites
- Semiconductor materials and devices
- Graphene research and applications
- Diamond and Carbon-based Materials Research
- Nanotechnology research and applications
- Advanced Materials Characterization Techniques
- Ion-surface interactions and analysis
- Advancements in Semiconductor Devices and Circuit Design
- Vacuum and Plasma Arcs
- Force Microscopy Techniques and Applications
- Electron and X-Ray Spectroscopy Techniques
- Mechanical and Optical Resonators
- Nanowire Synthesis and Applications
- Electrostatic Discharge in Electronics
- Integrated Circuits and Semiconductor Failure Analysis
- Molecular Junctions and Nanostructures
- Silicon Carbide Semiconductor Technologies
- Silicon Nanostructures and Photoluminescence
- Radiation Effects in Electronics
- Neuroscience and Neural Engineering
- Advanced Electron Microscopy Techniques and Applications
- Electrohydrodynamics and Fluid Dynamics
- Plasma Diagnostics and Applications
- Magnetic confinement fusion research
- Quantum and electron transport phenomena
Ioffe Institute
2016-2024
Tambov State Technical University
2020
Kyoto Katsura Hospital
2019
Kyoto University
2019
Physico-Technical Institute
2012-2017
Russian Academy of Sciences
2012-2017
Peter the Great St. Petersburg Polytechnic University
2014-2016
Saint-Petersburg State University of Telecommunications
2014
Pfizer (United States)
2012
Federal State Budgetary Institution of Science "Scientific and Technological Center of Unique Instrumentation" of the Russian Academy of Sciences
1992
Abstract Hot ion mode was recently achieved at the Globus-M2 spherical tokamak when toroidal magnetic field as high 0.9 T and plasma current 0.35 MA. The injection of two neutral beams with a total power 0.7 MW an energy 30 keV into major radius 0.36 m minor 0.22 (aspect ratio 1.6) made it possible to heat ions up 4 keV, while electron density in center 8 × 10 19 −3 . achievement temperatures became due good thermal insulation plasma.
This article presents, for the first time, a comparative analysis of emission characteristics large-area field-effect cathodes (LAFE) based on carbon nanotubes (CNTs) various morphologies according to key parameters using unique computerized technique. The work presents description technology creating CNT arrays and their comprehensive structure characterization. All synthesized by catalytic PECVD method silicon substrate showed high degree chemical purity under presented technological...
For field electron emission (FE), an empirical equation for measured current I m as a function of voltage V has the form = CV k exp[– B / ], where is constant and C are constants or vary weakly with . Values can be extracted (i) from simulations based on some specific FE theory, in principle (ii) current–voltage measurements sufficiently high quality. This paper shows that comparison theoretically derived experimentally k- values could provide sensitive useful tool comparing theory...
This paper provides a demonstration-of-concept of new methodology for comparing field electron emission (FE) theory and experiment. It uses the parameter κ in mathematical equation Im = CVmκ exp[-B/Vm] (where B C are weakly varying or constants) that is taken to describe how measured current depends on voltage Vm electronically ideal FE systems (i.e. (i) have constant configuration during application (ii) Im(Vm) given by physics alone). Experimental values (κm) used compare two alternative...
An experimental apparatus and a LabView-based software suite were developed to conduct real-time research on field electron emission. The authors observed analyzed the current–voltage characteristics of emitters based carbon nanotube/polystyrene nanocomposites. A simple quantitative test was used compare such with classical emission theory.
Nanostructured multitip surfaces have sufficient potential to obtain the high emission currents necessary develop stable and noninertial sources of free electrons with increased levels permissible currents. The key understanding processes formation stability macroscopic from these large area field emitters (LAFEs) is assessing local characteristics individual sites. Herein, a method for determining nanoscale sites developed via processing glow pattern data system rapidly recording...
Theoretical analysis of field electron emission must consider many parameters, one the most critical being enhancement factor (FEF). In a single tip form, FEF can vary several orders magnitude and depends only on system geometry, when gap length between emitter counter-electrode is much greater than height emitter. this work, we determine very accurate analytical expressions for five emitters with various shapes, which are often considered in literature: Ellipsoidal,...
Myeloperoxidase (MPO) is known to be inactivated and covalently modified by treatment with hydrogen peroxide agents similar 3-(2-ethoxypropyl)-2-thioxo-2,3-dihydro-1H-purin-6(9H)-one (1), a 254.08 Da derivative of 2-thioxanthine. Peptide mapping liquid chromatography mass spectrometry detected modification 1 in labile peptide-heme-peptide fragment the enzyme, accompanied increase 252.08 Da. The loss two atoms was consistent mechanism-based oxidative coupling. Multistage (MS(4)) an ion...
Local emission characteristics of microscopic sites on the surface large-area field emitters are among most important factors influencing macroscopic properties. This work aimed to evaluate local using a computerized projector and technique involving multichannel recording current–voltage characteristics. The model emitter consisted nanocomposite multiwall carbon nanotubes in polymer matrix.
In this paper, a comparison of theoretical and experimental approaches to the study large-area field electron emitters (LAFEs) was performed using test for correspondence measured volt-ampere characteristics ideal emission mode (the “orthodoxy”). The ranges permissible values electric fields, which provide mainly electrons, are justified calculated. compliance with regime is integrated as one software modules into computerized system studying LAFE. developed approach allows check directly in...
This work describes the investigation of carbon nanotube-polymeric nanocomposites and other multiple-tip emitters based on a new reflectron-type time-of-flight mass spectrometer specialized for field emission (FE) tasks, as well multichannel acquisition system on-line processing current–voltage characteristics parameters flat multipoint emitters. Evidence concerning transfer large molecular clusters emitter material to opposite electrode as-prepared samples is presented. It determined that...
The possibility of tuning the work function field emission cathodes coated with metal oxides by modifying chemical composition oxide film using an example CNT/NiO nanostructures is proposed.
A method for studying fluctuations in the microscopic emission parameters of flat multiple-point cathodes has been developed. For field emitters based on polymer/multiwalled carbon nanotube nanocomposites, statistical distribution effective heights centers obtained. Numerical estimates made using Pearson's chi-squared test confirmed that this is lognormal. these emitters, influence current describe characteristics discussed.
A study of single-tip tungsten emitters with the construction current–voltage dependences in quadratic Fowler–Nordheim coordinates and modified (Murphy–Good plot that depend on value work function) real-time has been carried out. The statistical data emission area field enhancement factor were accumulated. voltage power pre-exponential obtained by plotting dependence notional dimensionless at tip apex ln(Im/Jk) versus ln(f). An empirical formula is proposed uses a correction for voltage,...
The technique of record and in situ processing data about evolution multiwall carbon nanotubes polymer (MWCNT-polymer) field emitters was developed. It includes multichannel acquisition system current, voltage, vacuum level temperature computer on-line these by program which written on LabView. We gained time dependence enhancement factor, height number emission sites, slope-interception diagram voltage-current characteristics derivative.