Персона: Фоминский, Вячеслав Юрьевич
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Институт лазерных и плазменных технологий
Стратегическая цель Института ЛаПлаз – стать ведущей научной школой и ядром развития инноваций по лазерным, плазменным, радиационным и ускорительным технологиям, с уникальными образовательными программами, востребованными на российском и мировом рынке образовательных услуг.
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Вячеслав Юрьевич
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- ПубликацияОткрытый доступPreparation of Mo-S-P electrocatalytic films by pulsed laser ablation of MoS2/P composite target for effective hydrogen production(2020) Rubinkovskaya, O. V.; Fominski, D. V.; Romanov, R. I.; Nevolin, V. N.; Fominski, V. Yu.; Рубинковская, Оксана Владимировна; Фоминский, Дмитрий Вячеславович; Романов, Роман Иванович; Неволин, Владимир Николаевич; Фоминский, Вячеслав Юрьевич© Published under licence by IOP Publishing Ltd.The results of structural and electrochemical studies of thin Mo-S-P films obtained by pulsed laser deposition at various conditions from a target made of mixture of MoS2 and P powders are presented. For variation of S/P ratio and modification structure of the catalytic films, the deposition of the laser plume was conducted in vacuum, in Ar and H2S gas. The highest electrocatalytic properties for activating the hydrogen evolution reaction in an acid solution were found for composite amorphous/nanocrystalline MoS6P/nc-Mo films. In the chemical stateof S 2p, the high binding energy dominated. The doping of the films with phosphorus increased the efficiency of the reaction compared with that of MoS x /nc-Mo films. The analysis of the synergistic effect of phosphorus on the performance of amorphous MoS x P y films in H2 evolution was carried out using the density functional theory.
- ПубликацияТолько метаданныеComparative Characteristics of Catalytically Active MoSx Films in the Hydrogen Evolution Reaction on a MoSx/WSe2 Heterojunction Photocathode(2024) Rubinkovskaya, O. V.; Romanov, R. I.; Fominski, D. V.; Nevolin, V. N.; Fominski, V. Y.; Рубинковская, Оксана Владимировна; Романов, Роман Иванович; Фоминский, Дмитрий Вячеславович; Неволин, Владимир Николаевич; Фоминский, Вячеслав Юрьевич
- ПубликацияОткрытый доступFeatures of pulsed laser ablation of MoS2and MoSe2targets and their influence on the tribological properties of the deposited low friction films(2020) Goikhman, A.; Smirnov, N.; Fominski, D.; Gritskevich, M.; Romanov, R.; Fominski, V.; Фоминский, Дмитрий Вячеславович; Грицкевич, Мария Дмитриевна; Романов, Роман Иванович; Фоминский, Вячеслав Юрьевич© Published under licence by IOP Publishing Ltd.Laser-initiated modification of the structure and morphology of the MoS2 and MoSe2 targets used to obtain antifriction thin-film coatings by pulsed laser deposition were studied. Significant differences were revealed in the ablation mechanism of these materials that caused important differences in the structure formation of MoS x /Mo and MoSe x /Mo coatings containing submicro- and nano-scaled Mo particles. Results of the study of structure, morphology and tribological properties of these coatings (coefficient of friction, wear resistance) when testing by the technique of sliding the ball over the covered disk under different air humidity and temperatures are presented. Comparative studies have revealed the superiority of the MoSe x /Mo coatings over the MoS x /Mo coatings during sliding friction under varying conditions of applications in frictional unites.
- ПубликацияТолько метаданныеLocal laser annealing of 3C-SiC film deposited on the silicon substrate by CVD(2019) Mikhalik, M. M.; Avramchuk, A. V.; Komissarov, I. V.; Yu, Fominski, V.; Romanov, R. I.; Sultanov, A. O.; Siglovaya, N. V.; Ryndya, S. M.; Gusev, A. S.; Labunov, V. A.; Kargin, N. I.; Фоминский, Вячеслав Юрьевич; Романов, Роман Иванович; Султанов, Азрет Оюсович; Сигловая, Наталия Владимировна; Рындя, Сергей Михайлович; Гусев, Александр Сергеевич; Лабунов, Владимир; Каргин, Николай Иванович© Published under licence by IOP Publishing Ltd. In this work, we try to suite an approach, which concerns of epitaxial graphene growth by laser irradiation of 3C-SiC (111) film deposited on silicon substrate (111) by chemical vapor deposition method. Laser treatment was performed by pulsed 1064 nm laser with 20 Hz repetition rate and 15 ns pulse duration, the fluency was varied 0-1.5 J/cm 2 . Raman spectroscopy studies show that for fluence above 0.8 J/cm 2 2D band is noticeable revealing formation of high crystallographic quality graphitic (graphene) film.
- ПубликацияТолько метаданныеStructural, electrical and mechanical properties of ВСх films prepared by pulsed laser deposition from mixed and dual boron-diamond/graphite targets(2019) Zinin, P. V.; Bulatov, K. M.; Filonenko, V. P.; Fominski, V. Y.; Romanov, R. I.; Vasil'evskii, I. S.; Safonov, D. A.; Soloviev, A. A.; Фоминский, Вячеслав Юрьевич; Романов, Роман Иванович; Васильевский, Иван Сергеевич; Сафонов, Данил Андреевич; Соловьев, Алексей© 2019 Elsevier B.V. Relatively low and high deposition rates of BCх films were realized by pulsed laser ablation of mixed B–diamond and dual B–graphite targets, respectively. Deposition was performed at 500 °C and the rate of film deposition was determined with respect to the number of atomic monolayers (obviously less or more than one monolayer) grown for one laser pulse. In the case of BCх films formation with a low deposition rate, doping with B facilitated the growth of the nanocomposite structure, which possessed an increased fraction of sp3 bonds, a very low electrical resistance, and an improved mechanical performance. The change of the sheet resistance of these films as the temperature was reduced from 300 to 65 K had a metallic character. For about 95-nm-thick films with bulk compositions of BC1.7 and BC0.6, the resistivity at room temperature were approximately equal to 1.5 mΩ·cm, and the lowest resistivity of 0.23 mΩ·cm was detected for B-enriched film at 85 K. With an increase in the B atom concentration in such films, the charge carrier (holes) concentration decreased, and their mobility increased from 180 to 10,500 cm2·V−1·s−1 due to samples cooling. The application of a higher deposition rate from the dual B–graphite target activated surface migration of condensed atoms, which caused the development of granular morphology, the B segregation and the reduction of the sp3 bond fraction. The hardness and electrical conductivity of such films were obviously inferior to those of the films obtained by PLD with a low deposition rate.
- ПубликацияОткрытый доступThe formation of unsaturated IrOx in SrIrO3 by cobalt-doping for acidic oxygen evolution reaction(2024) Zhao, J. -W.; Yue, K.; Zhang, H.; Wei, S.-Y.; Fominskii, V. Y.; Фоминский, Вячеслав ЮрьевичAbstract Electrocatalytic water splitting is a promising route for sustainable hydrogen production. However, the high overpotential of the anodic oxygen evolution reaction poses significant challenge. SrIrO 3 -based perovskite-type catalysts have shown great potential for acidic oxygen evolution reaction, but the origins of their high activity are still unclear. Herein, we develop a Co-doped SrIrO 3 system to enhance oxygen evolution reaction activity and elucidate the origin of catalytic activity. In situ experiments reveal Co activates surface lattice oxygen, rapidly exposing IrO x active sites, while bulk Co doping optimizes the adsorbate binding energy of IrO x . The Co-doped SrIrO 3 demonstrates high oxygen evolution reaction electrocatalytic activity, markedly surpassing the commercial IrO 2 catalysts in both conventional electrolyzer and proton exchange membrane water electrolyzer.
- ПубликацияОткрытый доступTribological Properties of WS2 Thin Films Containing Graphite-like Carbon and Ni Interlayers(2023) Romanov, R. I.; Fominski, D. V.; Gritskevich, M.; Fominski, V. Y.; Романов, Роман Иванович; Фоминский, Дмитрий Вячеславович; Грицкевич, Мария Дмитриевна; Фоминский, Вячеслав Юрьевич
- ПубликацияТолько метаданныеConstruction of a transition-metal sulfide heterojunction photocatalyst driven by a built-in electric field for efficient hydrogen evolution under visible light(2023) Zhang, W.; Xu, Q.; Tang, X.; Jiang, H.; Fominski, V.; Фоминский, Вячеслав Юрьевич
- ПубликацияОткрытый доступComparative study of the structure, composition, and electrocatalytic performance of hydrogen evolution in mosx~2+δ/mo and mosx~3+δ films obtained by pulsed laser deposition(2020) Demin, M.; Goikhman, A.; Maksimova, K.; Fominski, V.; Fominski, D.; Romanov, R.; Фоминский, Вячеслав Юрьевич; Фоминский, Дмитрий Вячеславович; Романов, Роман Иванович© 2020 by the authors. Licensee MDPI, Basel, Switzerland.Systematic and in-depth studies of the structure, composition, and efficiency of hydrogen evolution reactions (HERs) on MoSx films, obtained by means of on-and off-axis pulsed laser deposition (PLD) from a MoS2 target, have been performed. The use of on-axis PLD (a standard configuration of PLD) in a buffer of Ar gas, with an optimal pressure, has allowed for the formation of porous hybrid films that consist of Mo particles which support a thin MoSx~2+δ (δ of ~0.7) film. The HER performance of MoSx~2+δ/Mo films increases with increased loading and reaches the highest value at a loading of ~240 μg/cm2. For off-axis PLD, the substrate was located along the axis of expansion of the laser plume and the film was formed via the deposition of the atomic component of the plume, which was scattered on Ar molecules. This made it possible to obtain homogeneous MoSx~3+δ (δ~0.8–1.1) films. The HER performances of these films reached saturation at a loading value of ~163 μg/cm2. The MoSx~3+δ films possessed higher catalytic activities in terms of the turnover frequency of their HERs. However, to achieve the current density of 10 mA/cm2, the lowest over voltages were −162 mV and −150 mV for the films obtained by off-and on-axis PLD, respectively. Measurements of electrochemical characteristics indicated that the differences in the achievable HER performances of these films could be caused by their unique morphological properties.
- ПубликацияОткрытый доступРАЗЛЕТ ЛАЗЕРНОЙ ПЛАЗМЫ В СЕРОВОДОРОДЕ И ФОРМИРОВАНИЕ ТОНКОПЛЕНОЧНЫХ ПОКРЫТИЙ a-С(S, H) С КАЧЕСТВЕННЫМИ АНТИФРИКЦИОННЫМИ СВОЙСТВАМИ(НИЯУ МИФИ, 2021) Грицкевич, М. Д.; Фоминский, Д. В.; Романов, Р. И.; Фоминский, В. Ю.; Фоминский, Вячеслав Юрьевич; Фоминский, Дмитрий Вячеславович; Грицкевич, Мария Дмитриевна; Романов, Роман ИвановичThe effect of reactive pulsed laser deposition of carbon on the tribological properties of the surface of steel materials was investigated. The influence of H2S pressure on the chemical state and composition of a-C(S,H) film was investigated. For the optimal pressure, the obtained coatings have high wear resistance and low coefficient of friction.