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Mass transfer during metal electrodeposition into the pores of anodic aluminum oxide from a binary electrolyte under the potentiostatic and galvanostatic conditions
Electrochimica Acta. 2016. Vol. 207. P. 247-256.
Bograchev D., Volgin V., Davydov A.
The mass transfer during the nanowire formation by the metal electrodeposition into the pores with a high aspect ratio from a binary electrolyte is studied theoretically. The application of quasi-steady-state approximation is justified. The equations for the ion concentration and electric potential at the bottom and in the mouth of the pores, the reaction overpotential, and the variation of the current density with time are obtained. The problem of time dependence of unfilled pore part length is solved numerically. The distinctions between the results obtained under the potentiostatic and galvanostatic conditions are demonstrated.
Bograchev Daniil A., Volgin V. M., Davydov A. D., Electrochimica Acta 2013 Vol. 96 P. 1-7
A simple model of electrochemical growth of nanowires in the pores of anodic aluminum oxide (AAO) template is developed. The metal deposition is considered at various overpotentials. The model takes into consideration the ionic transfer both in the varying diffusion layer in the pores and in the diffusion layer above the template, which is determined ...
Added: March 14, 2015
Bograchev Daniil A., Electrochimica Acta 2013 Vol. 112 P. 279-286
A model of inhomogeneous pores filling during electrodeposition of ordered metal nanowire arrays isdeveloped. The model takes into consideration the ionic transfer both in the varying diffusion layer in thepores and in the diffusion layer above the template, which is determined by the external hydrodynamicconditions. The model takes into account the kinetics of electrochemical reaction ...
Added: March 16, 2015
Trukhin V. N., Eliseev A., Optics and Spectroscopy 2015 Vol. 119 No. 5 P. 754-758
Experimental results on THz radiation emission by periodic arrays of semiconductor GaAs-based nanowires upon excitation by ultrashort optical pulses are presented. The efficiency of THz radiation emission is found to increase due to the resonant excitation of cylindrical modes in a nanocrystal. The maximum value of THz field can be achieved at distances between nanowires ...
Added: April 16, 2021
Mozharov A. M., Komissarenko F. E., Vasiliev A. A. et al., Journal of Physics: Conference Series 2016 Vol. 741 P. 1-5
Electrical properties of single GaN nanowires grown by means of molecular beam epitaxy with Nplasma source were studied. Ohmic contacts connected to single ntype GaN wires were produced by the combination of electron beam lithography, metal vacuum evaporation and rapid thermal annealing technique. The optimal annealing temperature to produce ohmic contacts implemented in the form of Ti/Al/Ti/Au stack has been determined. By means of 2terminal measurement wiring diagram the conductivity of single NW has been obtained for NWs with different growth parameters. The method of MESFET measurement circuit layout of single GaN nanowires (NWs) has been developed. In accordance ...
Added: February 18, 2021
Bolshakov A. D., Dvoretckaia L. N., Fedorov V. V. et al., Semiconductors 2018 Vol. 52 No. 16 P. 2088-2091
In this paper we demonstrate the results on selective area growth of GaP nanowires via self-catalyzed growth method using molecular beam epitaxy (MBE) technique on patterned Si(111) substrates. The pattern fabrication method on a base of the photolithography process over an array of microspherical lenses has been studied theoretically and then optimized in order to ...
Added: February 18, 2021
Gridchin V., Kotlyar K., Reznik R. et al., Nanotechnology 2021 Vol. 32 No. 33 Article 335604
InGaN nanostructures are among the most promising candidates for visible solid-state lighting
and renewable energy sources. To date, there is still a lack of information about the influence of
the growth conditions on the physical properties of these nanostructures. Here, we extend the
study of InGaN nanowires growth directly on Si substrates by plasma-assisted molecular beam
epitaxy. The results ...
Added: August 30, 2021
Bolshakov A. D., Fedorov V. V., Sapunov G. A. et al., Journal of Physics: Conference Series 2018 Vol. 1092 No. 1 P. 1-4
In this report, we study influence of the Si (111) substrate surface preparation on the growth, electronic and optical properties of the GaN nanowires (NWs) obtained via plasmaassisted molecular beam epitaxy. The substrate preparation varied from bare Si (111) surface and its deliberately nitridated counterpart to growth on AlN and Ga2O3 buffer layers and Ga ...
Added: February 18, 2021
Семенов А. В., Девятов И. А., Третьяков И. В. et al., Журнал радиоэлектроники 2011 № 11
Nonlinear Ginzburg-Landau equation for dirty supercondicting 1D wire is derived in the limit of high magnetic field. ...
Added: October 12, 2017
Sidorova M., Kozorezov A. G., Semenov A. et al., Physical Review B: Condensed Matter and Materials Physics 2018 Vol. 97 No. 184512 P. 1-13
We developed the model of the internal phonon bottleneck to describe the energy exchange between the
acoustically soft ultrathin metal film and acoustically rigid substrate. Discriminating phonons in the film into
two groups, escaping and nonescaping, we show that electrons and nonescaping phonons may form a unified
subsystem, which is cooled down only due to interactions with escaping ...
Added: May 29, 2018
Frolov A. V., Orlov A. P., Sinchenko A. A. et al., Journal of Physics: Conference Series 2018 Vol. 941 P. 1-4
We report preparation of nanoribbons (crossection ~ 250*25 nm2) by focused ion beam etching of single-crystalline Bi2Se3 and detailed measurements of their magnetoresistance at temperatures down to 4.2 K, magnetic field up to 9 T. In a magnetic field parallel to the axis of nanowire the magnetoresistance shows up oscillations. Surprisingly, the Fourier analysis shows ...
Added: February 25, 2018
Shcherbatenko M., Lobanov Y., Semenov A. et al., Proceedings of SPIE 2017 Vol. 10229 P. 102290G-1-102290G-12
Achievement of the ultimate sensitivity along with a high spectral resolution is one of the frequently addressed problems, as the complication of the applied and fundamental scientific tasks being explored is growing up gradually. In our work, we have investigated performance of a superconducting nanowire photon-counting detector operating in the coherent mode for detection of ...
Added: October 13, 2017
Bolshakov A. D., Fedorov V. V., Shugurov K. Y. et al., Nanotechnology 2019 Vol. 30 No. 39 P. 1-12
The role of Si (111) substrate surface preparation and buffer layer composition in the growth, electronic and optical properties of the GaN nanowires (NWs) synthesized via plasma-assisted molecular beam epitaxy is studied. A comparison study of GaN NWs growth on the bare Si (111) substrate, silicon nitride interlayer, predeposited AlN and GaOx buffer layers, monolayer thick ...
Added: February 18, 2021
Bolshakov A., Fedorov V., Sibirev N. et al., Physica Status Solidi - Rapid Research Letters 2019 Vol. 13 No. 11 P. 1900350
Growth and properties of the self‐catalyzed heterostructured GaP nanowires (NWs) with GaP1 − xAsx insertions in the form of nanodiscs (NDs) grown by means of molecular‐beam epitaxy on Si (111) substrate are studied. To obtain the NDs with the different composition and optoelectronic properties, the ratio of As and P fluxes is varied. Structural properties of the synthesized ...
Added: September 29, 2020
Korneev Alexander, Korneeva Y., Manova N. et al., IEEE Transactions on Applied Superconductivity 2013 Vol. 23 No. 3 P. 2201204
In this paper, we present our approaches to the development of fiber-coupled superconducting single photon detectors with enhanced photon absorption. For such devices we have measured detection efficiency in wavelength range from 500 to 2000 nm. The best fiber coupled devices exhibit detection efficiency of 44.5% at 1310 nm wavelength and 35.5% at 1550 nm ...
Added: March 7, 2014
Antipov A., Seleznev V., Vakhtomin Y. et al., IOP Conference Series: Materials Science and Engineering (MSE) 2020 Vol. 781 No. 1 P. 012011-1-012011-5
Spectral characteristics of WSi and NbN superconducting single-photon detectors with different surface resistance and width of nanowire strips have been investigated in the wavelength range of 1.3-2.5 µm. WSi structures with narrower strips demonstrated better performance for detection of single photons in longer wavelength range. The difference in normalized photon count rate for such structures ...
Added: December 10, 2020
Budkov Y., Kolesnikov A. L., Polymer Science - Series C 2018 Vol. 60 No. Supplement 1 P. 148-159
Theoretical models of the conformational behavior of flexible polymer chains in mixed solvents enunciated in the world literature during the last decade are critically reviewed. Models describing different mechanisms of coil-to-globule transitions in a good solvent induced by cosolvent addition are highlighted. Special attention is given to the analysis of theoretical approaches to describing the ...
Added: November 30, 2018
Kalmykov A., Melentiev P., Balykin V., Laser Physics Letters 2020 Vol. 17 No. 4 P. 045901
In this paper we present measurements and comparison of SPP propagation length at the practically important telecom wavelength (1560 nm) as well as in the near-infrared and visible spectral ranges. The measurements were carried out for plane SPP waves excited on Ag film surface using optical microscopy of SPP waves in the far field. We ...
Added: January 15, 2021
M. : Faculty of Physics, MSU, 2017
The Low Temperature Physics Conference is an international event held every three years, under the auspices of the IUPAP through its Commission C5 on Low Temperature Physics. The aim of these conferences is to exchange information and views among the members of the international scientific community in the general field of Low Temperature Physics. It ...
Added: October 1, 2017
Boldyrev K., Романов А., Хаула Е. et al., Journal of the American Ceramic Society 2019 Vol. 102 No. 5 P. 2745-2751
Single crystal of TlCl was doped with NIR photoluminescent univalent bismuth cations by prolonged immersion in liquid bismuth metal. The ion exchange Tl+ + Bi0 ↔ Tl0 + Bi+ at the crystal surface with subsequent Bi+ migration to the bulk are expected to drive the doping process. Contrary with Bi‐doped TlCl crystals, grown by Bridgman method, the ion exchange does ...
Added: February 8, 2019
Казанцев Д. В., Казанцева Е. А., Кузнецов Е. В. et al., Известия РАН. Серия физическая 2017 Т. 81 № 12 С. 1709-1714
Описаны принципы работы безапертурного сканирующего микроскопа ближнего оптического поля (ASNOM). Зондом в приборе служит металлизированная игла атомно-силового микроскопа, и оптическое взаимодействие с объектами на поверхности локализовано вблизи ее острия размером в несколько нанометров. Тело иглы имеет длину в несколько микрон, и это обеспечивает высокую эффективность ее электромагнитного взаимодействия с падающими на нее извне и излучаемыми ...
Added: December 6, 2020
Bodrova A., Osinsky A., Brilliantov N., Scientific Reports 2020 Vol. 10 Article 693
We study analytically and numerically the distribution of granular temperatures in granular mixtures for
different dissipation mechanisms of inelastic inter-particle collisions. Both driven and force-free systems
are analyzed. We demonstrate that the simplified model of a constant restitution coefficient fails to
predict even qualitatively a granular temperature distribution in a homogeneous cooling state. At the
same time we reveal ...
Added: February 25, 2020
Демин А. С., Масляев С. А., Пименов В. Н. et al., Физика и химия обработки материалов 2017 № 6 С. 5-17
Изучено влияние облучения в установке Плазменный фокус PF-1000 экстремальными энергетическими потоками быстрых ионов дейтерия (Ei≈100 кэВ, плотность мощности qi≈1011-1012 Вт/см2, длительность импульса ti≈10-50 нс) и дейтериевой плазмы (qpl≈109- 1010 Вт/см2, tpl≈50-100 нс) на структуру поверхностного слоя молибденовой пластины с учетом его плавления, частичного испарения и закалки расплава. На облученной поверхности обнаружено образование капельных структур, пор, ...
Added: December 25, 2017
Kuzmichev S. A., Kuzmicheva T. E., Tchesnokov S. N. et al., Journal of Superconductivity and Novel Magnetism 2016 Vol. 29 No. 4 P. 1111-1116
We present temperature dependences of the large and the small superconducting gaps measured directly by SnS-Andreev spectroscopy in various Fe-based superconductors and MgB2. The experimental L,S(T ) are wellfitted with a two-gap model based on Moskalenko and Suhl system of equations (supplemented with a BCS integral renormalization). From the fitting procedure, we estimate the key ...
Added: March 19, 2016
Dziom V., Shuvaev A. V., Shchepetilnikov A. et al., Physical Review B: Condensed Matter and Materials Physics 2019 Vol. 99 No. 4 Article 045305
The integer quantum Hall effect is a well-studied phenomenon at frequencies below about 100 Hz. The plateaus in high-frequency Hall conductivity were experimentally proven to retain up to 33 GHz, but the behavior at higher frequencies has remained largely unexplored. Using continuous-wave terahertz spectroscopy, the complex Hall conductivity of GaAs/AlGaAs heterojunctions was studied in the ...
Added: December 11, 2020