Персона: Гришаков, Константин Сергеевич
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Институт нанотехнологий в электронике, спинтронике и фотонике
Институт ИНТЭЛ занимается научной деятельностью и подготовкой специалистов в области исследования физических принципов, проектирования и разработки технологий создания компонентной базы электроники гражданского и специального назначения, а также построения современных приборов на её основе.
Наша основная цель – это создание и развитие научно-образовательного центра мирового уровня в области наноструктурных материалов и устройств электроники, спинтроники, фотоники, а также создание эффективной инновационной среды в области СВЧ-электронной и радиационно-стойкой компонентной базы, источников ТГц излучения, ионно-кластерных технологий материалов.
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Константин Сергеевич
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- ПубликацияТолько метаданныеInterlayer Heat Conductivity and Thermal Stability of Distorted Bilayer Graphene(2021) Podlivaev, A. I.; Grishakov, K. S.; Katin, K. P.; Maslov, M. M.; Подливаев, Алексей Игоревич; Гришаков, Константин Сергеевич; Катин, Константин Петрович; Маслов, Михаил Михайлович© 2021, Pleiades Publishing, Inc.The nonorthogonal tight-binding potential is augmented by long-range terms needed for a correct description of the interlayer interaction in bilayer graphene. The molecular dynamics method is used to study the heat transfer between two distorted graphene layers, one of which is initially cooled down to 0 K, and the second one is heated up to 77−7000 K. The characteristic time of the heat transfer depending on the initial temperature of the heated layer and the distortion of the layers is determined. It is demonstrated that both factors significantly affect the intensity of interlayer heat transfer. It is found that, during the characteristic time of temperature equalization, thermally induced defects of various types, including melting, separation of the layers, and tangential shear of the heated layer, can appear in the system. It is shown that the formation of thermally induced defects can result in more than an order of magnitude increase in the rate of interlayer heat transfer.
- ПубликацияОткрытый доступПРОГРАММА ДЛЯ РАСЧЕТА СТАТИЧЕСКИХ ХАРАКТЕРИСТИК РЕЗОНАНСНО-ТУННЕЛЬНЫХ ДИОДОВ НА ОСНОВЕ GAN(НИЯУ МИФИ, 2022) Гришаков, К. С.; Каргин, Н. И.; Каргин, Николай Иванович; Гришаков, Константин СергеевичПрограмма предназначена для расчета вольт-амперных характеристик GaN резонансно-туннельных диодов (РТД) с учетом межэлектронного взаимодействия, поляризационных зарядов на гетерограницах. Область применения программы: оптимизация статических характеристик GaN РТД. Пользователем задаются: толщины слоев, значения поляризационных зарядов на гетерограницах, степень легирования, значения эффективной массы и диэлектрической проницаемости квантовой ямы, значения разрыва зоны проводимости для барьерных слоев, температура. Далее программа решает стационарную систему уравнений Шредингера и Пуассона с открытыми граничными условиями для заданной гетероструктуры. Полученная вольт-амперная характеристика записывается в выходной текстовый файл. Программа распараллелена с помощью технологии OpenMP. Тип ЭВМ: IBM PC. ОС: Windows ХР и выше, Linux.
- ПубликацияОткрытый доступOn the stability of the metastable phase of atomic hydrogen(2020) Degtyarenko, N. N.; Grishakov, K. S.; Дегтяренко, Николай Николаевич; Гришаков, Константин Сергеевич© Published under licence by IOP Publishing Ltd.The possibility of metastable hydrogen formation was studied in details using the density functional theory. It was shown that the I41/amd structure of atomic metallic hydrogen could be dynamically stable in the pressure range of 175-500 GPa. The results of calculations of structural, energy characteristics and phonon spectra of the normal phase are presented.
- ПубликацияОткрытый доступElectronic Characteristics of Layered Heterostructures Based on Graphene and Two-Dimensional Perovskites: First-Principle Study(2025) Zubkov,L.; Kulyamin, P. A.; Grishakov, K. S.; Kaya, S.; Katin, K. P.; Maslov, M. M.; Зубков, Лев Станиславович; Кулямин, Павел Андреевич; Гришаков, Константин Сергеевич; Катин, Константин Петрович; Маслов, Михаил Михайлович
- ПубликацияТолько метаданныеTheoretical Study of the Interaction Between Favipiravir and Fluorinated Boron Nitride Fullerene(2024) Zubkov, L. S.; Kalika, E. B.; Grishakov, K. S.; Maslov, M. M.; Katin, K. P.; Зубков, Лев Станиславович; Гришаков, Константин Сергеевич; Маслов, Михаил Михайлович; Катин, Константин Петрович
- ПубликацияОткрытый доступAb initio Study of Hydrogen Adsorption on Metal-Decorated Borophene-Graphene Bilayer(2021) Grishakov, K. S.; Katin, K. P.; Kochaev, A. I.; Kaya, S.; Gimaldinova, M. A.; Maslov, M. M.; Гришаков, Константин Сергеевич; Катин, Константин Петрович; Гимальдинова, Маргарита Александровна; Маслов, Михаил МихайловичWe studied the hydrogen adsorption on the surface of a covalently bonded bilayer borophene-graphene heterostructure decorated with Pt, Ni, Ag, and Cu atoms. Due to its structure, the borophene-graphene bilayer combines borophene activity with the mechanical stability of graphene. Based on the density functional theory calculations, we determined the energies and preferred adsorption sites of these metal atoms on the heterostructure's borophene surface. Since boron atoms in different positions can have different reactivities with respect to metal atoms, we considered seven possible adsorption positions. According to our calculations, all three metals adsorb in the top position above the boron atom and demonstrate catalytic activity. Among the metals considered, copper had the best characteristics. Copper-decorated heterostructure possesses a feasible near-zero overpotential for hydrogen evolution reaction. However, the borophene-graphene bilayer decorated with copper is unstable with respect to compression. Small deformations lead to irreversible structural changes in the system. Thus, compression cannot be used as an effective mechanism for additional potential reduction.
- ПубликацияТолько метаданныеParametrization of a Microwave and the Noise Model of a Metamorphic 0.15 µm MHET InAlAs/InGaAs Transistor(2021) Gorelov, A. A.; Lokotko, V. V.; Kargin, N. I.; Vasilievsky, I. S.; Grishakov, K. S.; Ryzhuk, R. V.; Горелов, Андрей Алексеевич; Каргин, Николай Иванович; Васильевский, Иван Сергеевич; Гришаков, Константин Сергеевич; Рыжук, Роман Валериевич© 2021, Pleiades Publishing, Ltd.Abstract: AlGaAs MHEMT transistors are studied in the microwave frequency range with a gate length of 0.15 μm. It is found that the discrepancy between the experimental and theoretically calculated, within the model, S-parameters does not exceed 0.5% in the frequency range from 1 to 30 GHz. The static characteristics of the device are satisfactorily described by the indicated model in the voltage range of the runoff up to 2.5 V. For the analysis of the noise characteristics, the Fukui model is used. It is found that the influence of the parasitic drain capacitance and the values of the drain and source inductances do not significantly affect the noise characteristics of the transistor, and an increase in the parasitic capacitance and a decrease in the parasitic gate inductance can lead to a significant reduction in the high-frequency noise figure.
- ПубликацияТолько метаданныеCarbon vs silicon polyprismanes: a comparative study of metallic sp(3)-hybridized allotropes(2020) Maslov, M. M.; Grishakov, K. S.; Gimaldinova, M. A.; Katin, K. P.; Маслов, Михаил Михайлович; Гришаков, Константин Сергеевич; Гимальдинова, Маргарита Александровна; Катин, Константин ПетровичPolyprismanes are the special type of single-walled nanotubes with an extremely small cross-section in the form of a regular polygon. In the presented study, we considered carbon and silicon polyprismanes that are constructed from carbon and silicon five-, six-, seven- and eight-membered rings, respectively. By means of density functional theory using the periodic boundary conditions, the geometry and electronic characteristics of these tubes were investigated. The results obtained indicate that, with an increase in the effective diameter, carbon polyprismanes undergo an abrupt change in electronic properties, which can be described as a transition from the dielectric to the metallic state. The character of the energy spectrum, as well as the behavior of transmission function near the Fermi level, illustrate that at some critical diameter they begin to exhibit non-typical for the sp(3)-carbon systems metallic nature. In such a case, it has been found from the partial density of electronic states calculation that the overlapping of bands near the Fermi level is mainly due to the 2p state of carbon atoms. Unlike carbon analogs, silicon polyprismanes are metals for any considered diameter. The metallic properties of the silicon polyprismanes arise due to the 3p states of the silicon atoms. Unexpected properties endowed by the prismane morphology discover new prospects of application of carbon and silicon nanostructures as the basic elements of future electronics.
- ПубликацияТолько метаданныеSuperconducting germanium hydride with A15 structure(2021) Degtyarenko, N. N.; Grishakov, K. S.; Дегтяренко, Николай Николаевич; Гришаков, Константин Сергеевич© 2021 Institute of Physics Publishing. All rights reserved.The possibility of the formation of A15 germanium hydride is investigated theoretically by the density functional method. It is shown that A15 germanium hydride Ge2H6 is stable in a certain pressure range of about 125 GPa. The results of calculations of the structural, phonon and electronic properties, energy characteristics of the normal phase are presented. The critical temperature of the superconducting transition is estimated.
- ПубликацияТолько метаданныеSilicon rebirth: Ab initio prediction of metallic sp3-hybridized silicon allotropes(2020) Katin, K. P.; Grishakov, K. S.; Gimaldinova, M. A.; Maslov, M. M.; Катин, Константин Петрович; Гришаков, Константин Сергеевич; Гимальдинова, Маргарита Александровна; Маслов, Михаил Михайлович© 2019 Elsevier B.V.We report the prediction of metallic quasione-dimensional sp3-hybridized silicon allotropes in the form of prismanes. Silicon prismanes or polysilaprismanes are the silicon nanotubes of a special type constructed from the dehydrogenated molecules of cyclosilanes (silicon rings). By means of density functional theory, the electronic, geometry, energy, and some mechanical properties of these tubes are investigated. Our results show that silicon polyprismanes are thermodynamically stable compounds, and the character of the energy spectrum, as well as the behavior of transmission function near the Fermi level, illustrate that they exhibit non-typical for the silicon systems metallic nature. Moreover, the metallic state of polysilaprismanes is resistant to the mechanical stresses applied along their main axis. Unusual properties predicted in the presented study discover new prospects of application of silicon nanostructures as the basic elements of future micro- and nanoelectronics, as well as in energy, metrology, medical, and information technologies.