Библиотека института физики им. Л.В. Киренского СО РАН

Главная

Базы данных

Труды сотрудников ИФ СО РАН - результаты поиска

Вид поиска

Каталог книг и брошюр библиотеки ИФ СО РАН

Каталог журналов библиотеки ИФ СО РАН

Труды сотрудников ИФ СО РАН

Область поиска

в найденном

Найдено в других БД:

Каталог книг и брошюр библиотеки ИФ СО РАН (6)

Формат представления найденных документов:
полный	информационный	краткий

Отсортировать найденные документы по:
автору	заглавию	году издания	типу документа

Поисковый запрос: (<.>K=Optimization<.>)

Общее количество найденных документов : 22
Показаны документы с 1 по 20

A quantum chemical study of the formation of 2-hydroperoxy-coelenterazine in the Сa2+-regulated photoprotein obelin / L. Y. Antipina [et al.] // J. Struct. Chem. - 2011. - Vol. 52, Is. 5. - P. 870-875. - Cited References: 19. - The work was supported by RFBR (07-04-00930-a), the "Molecular and Cell Biology" Program of the Presidium of the Russian Academy of Sciences, and the Program of the Siberian Division of the Russian Academy of Sciences (project No. 2) within the implementation of the Federal Targeted Program "Scientific and Scientific Pedagogical Personnel of Innovative Russia, 2010" (P333 and P213). . - ISSN 0022-4766

РУБ Chemistry, Inorganic & Nuclear + Chemistry, Physical
Рубрики:
CALCIUM-DISCHARGED OBELIN
   SEMIEMPIRICAL METHODS
   1.7 ANGSTROM
   OPTIMIZATION
   PARAMETERS
   MECHANISM
   FLUORESCENCE
   ELEMENTS
   PROTEIN
   EMITTER
Кл.слова (ненормированные):
coelenterazine -- 2-hydroperoxy-coelenterazine -- Obelia longissima -- Renilla muelleri
Аннотация: The Ca2+-regulated photoprotein obelin determines the luminescence of the marine hydroid Obelia longissima. Bioluminescence is initiated by calcium and appears as a result of the oxidative decarboxylation related to the coelenterazine substrate. The luciferase of the luminescent marine coral Renilla muelleri (RM) also uses coelenterazine as a substrate. However, three proteins are involved in the in vivo bioluminescence of these animals: luciferase, green fluorescent protein, and Ca2+-regulated coelenterazine-binding protein (CBP). In fact, CBP that contains one strongly bound coelenterazine molecule is the RM luciferase substrate in the in vivo bioluminescent reaction. Coelenterazine becomes available for oxygen and the reaction with luciferase only after binding CBP with calcium ions. Unlike Ca2+-regulated photoproteins, the coelenterazine molecule is not activated by oxygen in the CBP molecule. In this work, by means of quantum chemical methods the behavior of substrates in these proteins is analyzed. It is shown that coelenterazine can form different tautomers: CLZ(2H) and CLZ(7H). The formation of 2-hydroperoxy-coelenterazine is studied. According to the obtained data, these proteins use different forms of the substrates for the reaction. In obelin, the substrate is in the CLZ(2H) form that affords hydrogen peroxide. In RM, coelenterazine is in the CLZ(7H) form, and therefore, CBP is not activated by oxygen.

WoS,
Смотреть статью,
Читать в сети ИФ
Держатели документа:
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Div, Krasnoyarsk, Russia
Russian Acad Sci, Inst Biophys, Siberian Div, Krasnoyarsk, Russia
MF Reshetnev Siberian State Aerosp Univ, Krasnoyarsk, Russia

Доп.точки доступа:
Antipina, L. Yu.; Tomilin, F. N.; Томилин, Феликс Николаевич; Vysotski, E. S.; Высоцкий, Евгений Степанович; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич
}
Найти похожие

Magnetic nanoparticles in borate glasses: Identification and sizing / I. S. Edelman [et al.] // International Conference on Optimization of Electrical and Electronic Equipment (OPTIM 2014) : IEEE Computer Society, 2014. - P. 95-104, DOI 10.1109/OPTIM.2014.6850939. - Cited References: 60 . - ISBN 978-1-4799-5183-3
Рубрики:
Engineering, Electrical and Electronic
Кл.слова (ненормированные):
SUPERPARAMAGNETIC RESONANCE -- FERROMAGNETIC-RESONANCE -- FERRITE NANOPARTICLES -- OXIDE NANOPARTICLES -- FARADAY-ROTATION -- CERAMICS -- IRON -- CRYSTALLIZATION -- ANISOTROPY -- PARTICLES
Аннотация: Heat treatment of borate glasses co-doped with low contents of iron and larger radius elements: Dy, Tb, Gd, Ho, Er, Y and Bi results in formation of magnetic nanoparticles, radically changing their physical properties. Transmission electron microscopy and synchrotron radiation-based techniques: XRD, EXAFS, XANES and SAXS, show a broad distribution of nanoparticle sizes with characteristic depending on the treatment regime; a crystalline structure of these nanoparticles is detected in heat treated samples. Magnetic circular dichroism (MCD) studies of samples subjected to heat treatment as well as of maghemite, magnetite and iron garnet allow to unambiguously assigning the nanoparticle structure to maghemite. Different features observed in the MCD spectra are related to different electron transitions in Fe3+ ions gathered in the nanoparticles. Variable-temperature electron magnetic resonance (EMR) studies confirm the formation of magnetic nanoparticles and the identification of their nature. Computer simulations of the EMR spectra corroborate the broad distribution of nanoparticle sizes found by 'direct' techniques. © 2014 IEEE.

Материалы конференции,
Материалы конференции,
Scopus,
WOS,
Читать в сети ИФ

Доп.точки доступа:
Edelman, I. S.; Эдельман, Ирина Самсоновна; Ivanova, O. S.; Иванова, Оксана Станиславовна; Zubavichus, Y.; Trofimova, N. N.; Zaikovskiy, V. I.; Artemenko, A.; Curely, J.; Kliava, J.; Russian Foundation for Basic Research; Russian Foundation for Basic Research; International Conference on Optimization of Electrical and Electronic Equipmen (22 May - 24 May 2014 ; Bran, Romania)
}
Найти похожие

Zobov, V. E.
On time-optimal NMR control of states of qutrits represented by quadrupole nuclei with the spin I=1 / V. E. Zobov, V. P. Shauro // J. Exp. Theor. Phys. - 2011. - Vol. 113, Is. 2. - P. 181-191, DOI 10.1134/S1063776111060094. - Cited References: 48. - This work was supported by the Russian Foundation for Basic Research (project no. 09-07-00138) and the Dynasty Foundation. . - ISSN 1063-7761

РУБ Physics, Multidisciplinary
Рубрики:
QUANTUM COMPUTATION
   MAGNETIC-RESONANCE
   ALGORITHMS
   ELEMENTS
   PULSES
   DESIGN
   QUDITS
   GATES
Кл.слова (ненормированные):
Logical operators -- Nuclear spins -- Numerical optimizations -- Optimality -- Physical parameters -- Quadrupole nuclei -- Qutrits -- Radio frequencies -- RF pulse -- Three level systems -- Time dependence -- Time-optimal -- Computer control systems -- Computer simulation -- Fourier transforms -- Optimization -- Quantum computers -- Resonance -- Nuclear quadrupole resonance
Аннотация: Elementary logical operators (selective rotation, Fourier transform, controllable phase shift, and SUM gate) are considered for a quantum computer based on three-level systems (qutrits) represented by nuclear spins I = 1 under nuclear magnetic resonance conditions. The computer simulation of the realization of these operators by means of simple and composite selective radiofrequency (RF) pulses and optimized RF pulses is performed. The time dependence of the amplitude of last pulses is found by numerical optimization at different durations. Two variants are proposed for realization of a two-qutrit SUM gate by using one-qutrit or two-qutrit optimized RF pulses. The calculated time dependences of realization errors were used to study the time optimality of different methods for obtaining gates, proposed earlier and in this paper. The advantages and disadvantages of each of the methods are evaluated for different values of physical parameters.

WOS,
Scopus,
Читать в сети ИФ
Держатели документа:
[Zobov, V. E.
Shauro, V. P.] Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
ИФ СО РАН
L.V. Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk 660036, Russian Federation

Доп.точки доступа:
Shauro, V. P.; Шауро, Виталий Павлович; Зобов, Владимир Евгеньевич
}
Найти похожие

Aplesnin, S. S.
Effect of bond fluctuations on the transport properties of manganites and nickelates / S. S. Aplesnin // J. Exp. Theor. Phys. - 2007. - Vol. 104, Is. 5. - P. 766-774, DOI 10.1134/S1063776107050111. - Cited References: 26 . - ISSN 1063-7761

РУБ Physics, Multidisciplinary
Рубрики:
NEUTRON-DIFFRACTION
   CHARGE DISPROPORTIONATION
   ELECTRONIC-STRUCTURE
   MAGNETIC ORDER
   TRANSITIONS
   PEROVSKITES
   PRNIO3
   GAP
Кл.слова (ненормированные):
Crystal structure -- Manganites -- Optimization -- Thermal conductivity -- Thermal effects -- Bond fluctuations -- Nickelates -- Orthorhombic crystal structure -- Nickel compounds
Аннотация: For the manganites RMnO(3) (R = La, Pr, Nd), a mechanism is proposed to explain the anomalous temperature dependences of the kinetic coefficients, resistivity, and thermoelectric power during the transition from the pseudocubic O to the orthorhombic O' crystal structure. The contributions of the bending and stretching modes of the octahedron to the formation of thermal-conductivity maxima and to the deviation from the linear dependence of ln(rho/T) on 1/T at low temperatures have been estimated. In nickelates, the metal-insulator transition is caused by lattice-polaron pinning by the stretching mode of the octahedron, and the low-temperature anomaly of the thermal conductivity is related to electron scattering by the bending mode of the octahedron.

WOS,
Scopus,
Читать в сети ИФ
Держатели документа:
Russian Acad Sci, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
Reshetnev Siberian State Aerosp Univ, Krasnoyarsk 660014, Russia
ИФ СО РАН
Kirensky Institute of Physics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russian Federation
Reshetnev Siberian State Aerospace University, Krasnoyarsk, 660014, Russian Federation

Доп.точки доступа:
Аплеснин, Сергей Степанович
}
Найти похожие

Ovchinnikov, S. G.
Effective Hamiltonian for HTSC cuprates taking into account electron-phonon interaction in the strong-correlation regime / S. G. Ovchinnikov, E. I. Shneider // J. Exp. Theor. Phys. - 2005. - Vol. 101, Is. 5. - P. 844-855, DOI 10.1134/1.2149064. - Cited References: 38. - This work was supported by the Russian Foundation for Basic Research (project no. 03-02-16124), the program “Quantum Macrophysics” of the Presidium of the Russian Academy of Sciences, the Foundation in Support for Russian Science, the Foundation of Noncommercial . - ISSN 1063-7761

РУБ Physics, Multidisciplinary
Рубрики:
HIGH-TEMPERATURE SUPERCONDUCTORS
   D-WAVE SUPERCONDUCTIVITY
   T-C
   DISPERSION
   SCATTERING
   OXIDES
   STATE
   MODEL
Кл.слова (ненормированные):
Electron beams -- Electronic structure -- Optimization -- Phonons -- Electron correlations -- Hubbard X operators -- Spin-photon interaction -- Hamiltonians
Аннотация: Electron-phonon interaction is sequentially derived from a realistic p-d multiband model for the cuprates under conditions of strong electron correlations. The electronic structure is described using the representation of the Hubbard X operators in a generalized tight-binding method. Dependences of the diagonal and off-diagonal (on lattice sites) matrix elements of electron-phonon interaction on the wavevectors are found for three phonon modes, namely, breathing, apical breathing, and bending modes. The interactions of the breathing and bending modes with electrons are shown to contribute to the formation of kinks in the (0; 0)-(pi; pi) and (0; 0)-(pi; 0) directions, respectively. A low-energy t-J* model with phonons is developed; apart from electron-phonon interaction, it also includes spin-phonon interaction. The elimination of phonons gives an effective electron-electron interaction that depends on the occupation number of a multielectron term and on the carrier concentration due to strong electron correlations. (c) 2005 Pleiades Publishing, Inc.

WOS,
Scopus,
РИНЦ,
Смотреть статью,
Читать в сети ИФ

Публикация на русском языке Овчинников, Сергей Геннадьевич. Эффективный гамильтониан для ВТСП-купратов с учетом электрон-фононного взаимодействия в режиме сильных корреляций [Текст] / С. Г. Овчинников, Е. И. Шнейдер // Журнал экспериментальной и теоретической физики. - 2005. - Т. 128 Вып. 5. - С. 974-986

Держатели документа:
Russian Acad Sci, Kirensky Inst Phys, Krasnoyarsk 660036, Russia
ИФ СО РАН
Kirenskii Institute of Physics, Siberian Division, Russian Academy of Sciences, Krasnoyarsk, Akademgorodok, 660036, Russian Federation

Доп.точки доступа:
Shneider, E. I.; Шнейдер, Елена Игоревна; Овчинников, Сергей Геннадьевич
}
Найти похожие

Fedorov, A. S.
Optimization of the calculations of the electronic structure of carbon nanotubes / A. S. Fedorov, P. B. Sorokin // Phys. Solid State. - 2005. - Vol. 47, Is. 11. - P. 2196-2202, DOI 10.1134/1.2131167. - Cited References: 19 . - ISSN 1063-7834

РУБ Physics, Condensed Matter
Рубрики:
MOLECULAR-DYNAMICS
ELASTIC PROPERTIES
TUBES
Аннотация: A method is proposed for calculating the electronic structure and physical properties (in particular, Young's modulus) of nanotubes, including single-walled carbon nanotubes. This method explicitly accounts for the periodic boundary conditions for the geometric structure of nanotubes and makes it possible to decrease considerably (by a factor of 10-10(3)) the time needed to calculate the electronic structure with minimum error. In essence, the proposed method consists in changing the geometry of the structure by partitioning nanotubes into sectors with the introduction of the appropriate boundary conditions. As a result, it becomes possible to reduce substantially the size of the unit cell of the nanotube in two dimensions, so that the number of atoms in a new unit cell of the modified nanotube is smaller than the number of atoms in the initial unit cell by a factor equal to an integral number. A decrease in the unit cell size and the corresponding decrease in the number of atoms provide a means for drastically reducing the computational time, which, in turn, substantially decreases with an increase in the degree of partition, especially for nanotubes with large diameters. The results of the calculations performed for carbon and non-carbon (boron nitride) nanotubes demonstrate that the electronic structures, densities of states, and Young's moduli determined within the proposed approach differ insignificantly from those obtained by conventional computational methods. (c) 2005 Pleiades Publishing, Inc.

WOS,
Scopus,
Читать в сети ИФ
Держатели документа:
Russian Acad Sci, Kirensky Phys Inst, Siberian Div, Krasnoyarsk 660036, Russia
ИФ СО РАН
Kirensky Institute of Physics, Siberian Division, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Sorokin, P. B.; Федоров, Александр Семенович
}
Найти похожие

Optimization of the contrast, brightness, and modulation amplitude of light in electrooptic devices based on polymer-encapsulated ferroelectric liquid crystals / V. Y. Zyryanov [et al.] // Tech. Phys. Lett. - 1998. - Vol. 24, Is. 6. - P. 483-484, DOI 10.1134/1.1262154. - Cited References: 6 . - ISSN 1063-7850

РУБ Physics, Applied

Аннотация: An analysis is made of the relations connecting the maximum optical transmittance, the light modulation amplitude, and the contrast in a polymer-encapsulated ferroelectric liquid-crystal device to the geometry of device and the tilt angle theta of the director. The correctness of the calculations is confirmed by their agreement with experimental measurements. (C) 1998 American Institute of Physics. [S1063-7850(98)02806-7].

WOS,
Scopus,
Читать в сети ИФ

Держатели документа:
Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk, Russia
ИФ СО РАН

Доп.точки доступа:
Zyryanov, V. Y.; Зырянов, Виктор Яковлевич; Smorgon, S. L.; Сморгон, Сергей Леонидович; Shabanov, A. V.; Шабанов, Александр Васильевич; Pozhidaev, E. P.
}
Найти похожие

Optimization of photothermal methods for laser hyperthermia of malignant cells using bioconjugates of gold nanoparticles / V. S. Gerasimov [et al.] // Colloid J. - 2016. - Vol. 78, Is. 4. - P. 435-442, DOI 10.1134/S1061933X16040050. - Cited References: 33. - This work was supported by the Ministry of Education and Science of the Russian Federation (contract no. 14.607.21.0104 RFMEFI60714X0104) (Section 3) and the State Assignment of the Ministry of Education and Science of the Russian Federation for Siberian Federal University (contract no. 1792) (Section 2). The numerical calculations were performed using the MVS-1000 M cluster at the Institute of Computational Modeling, Siberian Branch, Russian Academy of Sciences. . - ISSN 1061-933X

РУБ Chemistry, Physical
Рубрики:
THERMAL THERAPY
   PLASMONIC NANOPARTICLES
   OPTICAL-PROPERTIES
   TUMOR-CELLS
   CARCINOMA
   CLUSTERS
   CANCER
Аннотация: Selective action of laser radiation on membranes of malignant cells has been studied in different regimes using conjugates of gold nanoparticles with oligonucleotides by the example of DNA aptamers. Under the conditions of a contact between a bioconjugate and a cell surface and the development of substantial and rapidly relaxing temperature gradients near a nanoparticle, the membranes of malignant cells alone are efficiently damaged due to the local hyperthermia of a cellular membrane. It has been shown that employment of pulsed instead of continuous wave laser radiation provides the localization of the damaging action, which does not involve healthy cells. © 2016, Pleiades Publishing, Ltd.

Смотреть статью,
Scopus,
WOS,
Читать в сети ИФ

Публикация на русском языке Оптимизация фототермических методов лазерной гипертермии злокачественных клеток с применением биоконъюгатов золотых наночастиц [Текст] / В. С. Герасимов [и др.] // Коллоид. журн. : Наука, 2016. - Т. 78 № 4. - С. 417–425

Держатели документа:
Siberian Federal University, Svobodnyi pr. 79, Krasnoyarsk, Russian Federation
Institute of Computational Modeling, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50/44, Krasnoyarsk, Russian Federation
Kirenskii Institute of Physics, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50/38, Krasnoyarsk, Russian Federation
Reshetnev State Siberian State Aerospace University, pr. Gazety “Krasnoyarskii rabochii” 31, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Gerasimov, V. S.; Герасимов, Валерий Сергеевич; Ershov, A. E.; Ершов, Александр Евгеньевич; Karpov, S. V.; Карпов, Сергей Васильевич; Polyutov, S. P.; Semina, P. N.; Семина, Полина Николаевна
}
Найти похожие

Thermoelectric properties and cost optimization of spark plasma sintered n-type Si0.9Ge0.1 - Mg2Si nanocomposites / A. Usenko [et al.] // Scripta Mater. - 2018. - Vol. 146. - P. 295-299, DOI 10.1016/j.scriptamat.2017.12.019. - Cited References: 28. - This work was supported by Russian Science Foundation (project No. 16-13-00060). Part of the work (structural characterization of the samples) was carried out with financial support of the Ministry of Education and Science of the Russian Federation in the framework of Increase Competitiveness Program of NUST “MISiS”. Partial support by Act 211 Government of the Russian Federation, contract # 02.A03.21.0011, is also acknowledged. . - ISSN 1359-6462
Кл.слова (ненормированные):
Cost optimization -- Lattice thermal conductivity -- Magnesium silicides -- Spark plasma -- Thermo-Electric materials -- Thermoelectric figure of merit -- Thermoelectric performance -- Thermoelectric properties
Аннотация: We report on thermoelectric properties of low Ge content n-type Si0.9Ge0.1–Mg2Si nanocomposite. Introduction of the Mg2Si phase into a SiGe matrix resulted in a dramatic drop of the lattice thermal conductivity beyond the previously reported lowest limit for SiGe alloys due to intensification of phonon scattering on SiGe–Mg2Si grain boundaries. For a sample doped with 1 at.% of Mg2Si, the peak value of thermoelectric figure of merit ZT reached ~ 0.8 at 800 °C. Sintered nanocomposites still exhibit high thermoelectric performance while being almost two times cheaper than Si0.8Ge0.2.

Смотреть статью,
Scopus,
WOS,
Читать в сети ИФ
Держатели документа:
National University of Science and Technology “MISiS”, Moscow, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation
Kirensky Institute of Physics, Krasnoyarsk, Russian Federation
National Research South Ural State University, Chelyabinsk, Russian Federation

Доп.точки доступа:
Usenko, A.; Moskovskikh, D.; Korotitskiy, A.; Gorshenkov, M.; Zakharova, E.; Fedorov, A. S.; Федоров, Александр Семенович; Parkhomenko, Y.; Khovaylo, V.
}
Найти похожие

10.

Optimization of steel-surface hardening by carbon nanostructures followed by treatment with hIgh-intensity energy sources / G. S. Bocharov [et al.] // J. Surf. Invest. - 2018. - Vol. 12, Is. 1. - P. 27-32, DOI 10.1134/S102745101801007X. - Cited References: 14. - This study was supported by the Russian Science Foundation, project no. 16-19-10027. . - ISSN 1027-4510
Кл.слова (ненормированные):
metal surface hardening -- carbon nanomaterials -- laser irradiation -- electron-beam treatment -- microhardness
Аннотация: The effect whereby a steel surface is modified by its covering with a nanocarbon material followed by fast electron- or laser-beam irradiation is studied. The initial material is low-carbon steel. Soot produced via the thermal sputtering of graphite electrodes in an electric arc with the subsequent extraction of fullerenes is used as the nanocarbon coating. Due to the fact that nanocarbon-coated samples are irradiated with a 60-keV electron beam, the material microhardness enhances considerably. The dependence between the microhardness and the irradiation energy is nonmonotonic and reaches its maximum (about 600 ± 20 HV) under the condition that the electron-irradiation energy is 460 J/cm2 and the intensity is 1.53 kW/cm2. This corresponds to a fourfold increase in the microhardness. Electron-beam irradiation of the treated surface is accompanied by a 1.5–2-fold decrease in the friction coefficient. Experimental results are compared with data obtained under laser irradiation of the nanocarbon-coated steel surface.

Смотреть статью,
Scopus,
WOS,
Читать в сети ИФ

Публикация на русском языке Оптимизация упрочнения стальной поверхности углеродными наноструктурами с последующей обработкой высокоинтенсивными источниками [Текст] / Г. С. Бочаров [и др.] // Поверхность. - 2018. - № 1. - С. 33-39

Держатели документа:
National Research University “Moscow Power Engineering Institute”, Moscow, Russian Federation
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Bocharov, G. S.; Eletskii, A. V.; Zakharenkov, A. V.; Zilova, O. S.; Sliva, A. P.; Terentyev, E. V.; Fedorovich, S. D.; Churilov, G. N.; Чурилов, Григорий Николаевич
}
Найти похожие

11.

    Su, Binbin.
    Mn2+-Based narrow-band green-emitting Cs3MnBr5 phosphor and the performance optimization by Zn2+ alloying / B. B. Su, M. S. Molokeev, Z. G. Xia // J. Mater. Chem. C. - 2019. - Vol. 7, Is. 36. - P. 11220-11226, DOI 10.1039/c9tc04127c. - Cited References: 24. - The present work was supported by the National Natural Science Foundations of China (Grant No. 51722202, 51972118 and 51572023), Natural Science Foundations of Beijing (2172036) and the Guangdong Provincial Science & Technology Project (no. 2018A050506004). . - ISSN 2050-7526. - ISSN 2050-7534
   Перевод заглавия: Узкополосный зеленый люминофор Cs3MnBr5 на основе Mn2+ и оптимизация рабочих характеристик путем легирования Zn2+

РУБ Materials Science, Multidisciplinary + Physics, Applied
Рубрики:
THERMAL-STABILITY
BACKLIGHT
EMISSION
Аннотация: To discover new narrow-band green-emitting phosphors is a challenge for backlighting light-emitting diodes (LEDs) used in liquid crystal displays (LCDs). The synthesis and optical properties of Cs3MnBr5 are demonstrated herein. The intrinsic Mn2+ luminescence without concentration quenching leads to intense green emission at 520 nm with narrow full width at half maximum of 42 nm and high photoluminescence quantum yield (PLQY) of 49% under the excitation at 460 nm. When a small amount of Zn2+ is introduced into Cs3MnBr5, the luminescence intensity decreases slightly. However, the thermal stability of Cs3MnBr5 is improved from 82% to 87% with the intensity values at 423 K compared to that at 298 K. The white LED device fabricated using Cs3Mn0.96Zn0.04Br5 (green) and K2SiF6:Mn4+ (red) phosphors with a blue LED chip exhibit a high luminous efficiency (107.76 lm W-1) and wide color gamut (101% National Television System Committee standard (NTSC) in Commission Internationale de L'Eclairage (CIE) 1931 color space), demonstrating its potential application in wide color gamut LCD backlights.

Смотреть статью,
Scopus,
WOS,
Читать в сети ИФ
Держатели документа:
South China Univ Technol, State Key Lab Luminescent Mat & Devices, Guangzhou 510641, Guangdong, Peoples R China.
South China Univ Technol, Inst Opt Commun Mat, Guangzhou 510641, Guangdong, Peoples R China.
Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Lab Crystal Phys, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
Far Eastern State Transport Univ, Dept Phys, Khabarovsk 680021, Russia.

Доп.точки доступа:
Molokeev, M. S.; Молокеев, Максим Сергеевич; Xia, Zhiguo
}
Найти похожие

12.

    Bulgakov, E. N.
    Q-factor optimization in dielectric oligomers / E. N. Bulgakov, D. N. Maksimov // Phys. Rev. A. - 2019. - Vol. 100, Is. 3. - Ст. 033830, DOI 10.1103/PhysRevA.100.033830. - Cited References: 43. - This work was supported by the Ministry of Higher Education and Science of the Russian Federation (State Contract No. 3.1845.2017/4.6). . - ISSN 2469-9926. - ISSN 2469-9934
   Перевод заглавия: Оптимизация добротности в диэлектрических олигомерах

РУБ Optics + Physics, Atomic, Molecular & Chemical
Рубрики:
FOURIER MODAL METHOD
   PHOTONIC CRYSTAL
   BOUND-STATES
   ENHANCEMENT
Аннотация: In this paper we propose an optimization procedure for quality-factor (Q-factor) enhancement in dielectric oligomers. The oligomers are introduced as linear periodic chains of dielectric elements the individual Q factors of which are optimized via multipolar conversion in an avoided crossing of two resonant eigenfrequencies. It is demonstrated that when such dielectric elements are assembled into an infinite periodic array the coupling between individual resonances gives rise to an in-Γ optical bound state in the continuum (BIC) unprotected by symmetry. By setting up the oligomers of finite numbers of dielectric elements we observe high quality resonances which occur as traces of the infinite array band structure. The resulting high quality resonances exhibit light localization spots of a few squared wavelengths with Q factors Q ˃10 4. The localization is provided by similarity of the field pattern to that of the BIC with the losses at the edges of the array suppressed due to an almost flat BIC host band. The scaling law of the Q factor against the dielectric permittivity is derived.

Смотреть статью,
Scopus,
WOS,
Читать в сети ИФ
Держатели документа:
Reshetnev Siberian State Univ Sci & Technol, Krasnoyarsk 660037, Russia.
RAS, Kirensky Inst Phys, Fed Res Ctr KSC SB, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Krasnoyarsk 660041, Russia.

Доп.точки доступа:
Maksimov, D. N.; Максимов, Дмитрий Николаевич; Булгаков, Евгений Николаевич; Ministry of Higher Education and Science of the Russian FederationMinistry of Education and Science, Russian Federation [3.1845.2017/4.6]
}
Найти похожие

13.

Efficiency comparison of the optimization methods that are used to design microwave filters [Text] / V. V. Tyurnev // Materials digest of the VUIth International Scientific and Practical conference "Space and time - coordinate system of human develop-ment", Kiev, August 25 - September 1. - 2011. - P75-76

Доп.точки доступа:
Tyurnev, V.V.; "Space and time - coordinate system of human develop-ment", International Scientific and Practical conference(2011 ; Aug. 25 - Sep. 1 ; Kiev)
}
Найти похожие

14.

Miniature suspended-substrate bandpass filter / B. A. Belyaev [et al.] // Prog. Electromagn. Res. C. - 2010. - Vol. 15. - P219-231, DOI 10.2528/PIERC10070604 . - ISSN 1937-8718
Кл.слова (ненормированные):
Attenuation poles -- Narrow band filter -- Optimization method -- Pass-band edge -- Resonator filters -- Strip conductors -- Stripline structures -- Microwave filters -- Resonators -- Strip telecommunication lines -- Bandpass filters
Аннотация: A new quasi-lumped suspended-substrate stripline structure admitting implementation of miniature highly selective narrowband filters is studied. Appreciable improvement of the device selectivity is achieved with supplementary strip conductors introduced between the resonators, which induce attenuation poles near both passband edges. Furthermore, these supplementary conductors reducing the coupling between the resonators allow diminishing the interresonator spacing and the total size. A four-resonator filter is synthesized using the intelligence optimization method. Experimental results of the manufactured filter are presented.

Scopus,
eLibrary
Держатели документа:
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk 660036, Russian Federation
Institute of Engineering Physics and Radio Electronics, Siberian Federal University, Krasnoyarsk 660074, Russian Federation

Доп.точки доступа:
Belyaev, B. A.; Беляев, Борис Афанасьевич; Лексиков, Александр Александрович; Leksikov, A. A.; Tyurnev, V. V.; Тюрнев, Владимир Вениаминович; Serzhantov, A. M.; Сержантов, Алексей Михайлович
}
Найти похожие

15.

    Analytic gradient for the adaptive frozen orbital bond detachment in the fragment molecular orbital method / D. G. Fedorov [et al.] // Chem. Phys. Lett. - 2009. - Vol. 477, Is. 1-3. - P. 169-175, DOI 10.1016/j.cplett.2009.06.072. - Cited Reference Count: 49. - Гранты: We thank Professor M. Suenaga of Kyushu University for continuing his development of the modeling software FACIO and its FMO interface. D. G. F. and K. K. were supported by the a Grant-in- Aid for Scientific Research (JSPS, Japan) and the Next Generation SuperComputing Project, Nanoscience Program (MEXT, Japan). J.H.J. was supported by a Skou Fellowship from the Danish Research Agency (Forskningsradet for Natur og Univers). - Финансирующая организация: JSPS, Japan; Next Generation SuperComputing Project; MEXT, Japan; Danish Research Agency . - JUL 28. - ISSN 0009-2614
Рубрики:
DENSITY-FUNCTIONAL THEORY
   GEOMETRY OPTIMIZATIONS
   SEMICONDUCTOR NANOWIRES
   SILICON NANOWIRES
   METHOD FMO
   ENERGY
   SURFACES
   RECONSTRUCTION
   CHEMISTRY
   PROTEINS
Кл.слова (ненормированные):
Energy gradients -- Fragment molecular orbital methods -- Future applications -- Geometry optimization -- Numerical criteria -- Silicon Nanowires -- Molecular modeling -- Molecular orbitals
Аннотация: We have developed and implemented the analytic energy gradient for the bond detachment scheme in the fragment molecular orbital method (FMO) suitable to describe solids, and applied it to the geometry optimization of a silicon nanowire at several levels of theory. In addition, we have examined in detail the effects of the particular choice of the fragmentation upon the accuracy and introduced a number of numerical criteria to characterize the errors. The established route is expected to provide guidance for future applications of FMO to surfaces, solids and nanosystems. (C) 2009 Elsevier B. V. All rights reserved.

WOS,
Scopus,
eLibrary
Держатели документа:
Natl Inst Adv Ind Sci & Technol, RICS, Tsukuba, Ibaraki 3058568, Japan
SB RAS, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
Siberian Fed Univ, Krasnoyarsk 660041, Russia
Univ Copenhagen, Dept Chem, DK-2100 Copenhagen, Denmark
Kyoto Univ, Grad Sch Pharmaceut Sci, Sakyo Ku, Kyoto 6068501, Japan

Доп.точки доступа:
Fedorov, D.G.; Kitaura, K.; Avramov, P. V.; Аврамов, Павел Вениаминович; Jensen, J.H.
}
Найти похожие

16.

    Strong Electron Correlations Determine Energetic Stability and Electronic Properties of Er-Doped Goldberg-Type Silicon Quantum Dots / P. V. Avramov [et al.] // J. Phys. Chem. C. - 2009. - Vol. 113, Is. 36. - P. 15964-15968, DOI 10.1021/jp904996e. - Cited Reference Count: 43. - Гранты: This work was supported by a CREST (Core Research for Evolutional Science and Technology) grant in the Area of High Performance Computing for Multiscale and Multiphysics Phenomena from the Japan Science and Tcchnology Agency (JST) and a collaborative RFBR-JSPS Grant 0902-92107-Phi. One of the authors (S.I.) also acknowledges support by the Program for Improvement of Research Environment for Young Researchers from Special Coordination Funds for Promoting Science and Technology (SCF) commissioned by the Ministry of Education, Culture, Sports, Science and Technology (MEXT) of Japan. - Финансирующая организация: Japan Science and Tcchnology Agency (JST); RFBR-JSPS Grant; Ministry of Education, Culture, Sports, Science and Technology (MEXT) of Japan . - SEP 10. - ISSN 1932-7447
Рубрики:
IMPLANTED POROUS SILICON
   AUGMENTED-WAVE METHOD
   MU M LUMINESCENCE
   SI NANOCRYSTALS
   THIN-FILMS
   BASIS-SET
   ERBIUM
   PHOTOLUMINESCENCE
   DENSITY
   PSEUDOPOTENTIALS
Кл.слова (ненормированные):
Ab initio -- Atomic structure -- Density functionals -- Empirical pseudo-potential -- Endohedrals -- Energetic stability -- Er-doped -- Erbium complexes -- Erbium ion -- Experimental data -- Hartree-fock -- Many body perturbation theory -- Mass centers -- Perturbation approach -- Plane wave -- Pseudopotentials -- Quantum Dot -- Silicon quantum dots -- Strong binding -- Strong electron correlations -- Theoretical result -- Crystal atomic structure -- Electron correlations -- Electron density measurement -- Electronic properties -- Electronic structure -- Erbium -- Perturbation techniques -- Structural optimization -- Semiconductor quantum dots
Аннотация: Atomic and electronic structures of Goldberg-type silicon quantum dots and their endohedral erbium complexes were studied using ab initio and plane wave pseudopotential density functional and Moller-Plesset many-body perturbation theories. During atomic structure optimizations, the erbium ions occupy mass centers inside the central hollows of quantum dots of different symmetries. It was found that strong electron correlations within the Er 4f shell taken into account by empirical pseudopotential and post-Hartree-Fock perturbation approaches are responsible for strong binding of Er ions to quantum dots. We elucidate the effects of symmetry and discuss theoretical results in comparison to available experimental data,

WOS,
Scopus,
eLibrary,
http://pubs.acs.org/doi/abs/10.1021/jp904996e.
Держатели документа:
SB RAS, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
Siberian Fed Univ, Krasnoyarsk 660041, Russia
Natl Inst Adv Ind Sci & Technol, RICS, Tsukuba, Ibaraki 3058568, Japan
Nagoya Univ, Inst Adv Res, Nagoya, Aichi 4648602, Japan
Nagoya Univ, Dept Chem, Nagoya, Aichi 4648602, Japan
Kyoto Univ, Fukui Inst Fundamental Chem, Sakyo Ku, Kyoto 6068103, Japan

Доп.точки доступа:
Avramov, P. V.; Аврамов, Павел Вениаминович; Kuzubov, A. A.; Кузубов, Александр Александрович; Fedorov, D. G.; Irle, S.; Morokuma, K.
}
Найти похожие

17.

Peculiarities of Intelligence Optimization of a Microstrip Filter on Folded Dual-mode Resonators [Text] / I. A. Dovbysh, V. V. Tyurnev // Progress in Electromagnetics Research Symposium Proceedings (PIERS 2009). - 2009. - P. 1161-1163

Материалы конференции

Доп.точки доступа:
Dovbysh, I.A.; Tyurnev, V. V.; Progress In Electromagnetics Research Symposium(26 ; 2009 ; Aug. ; 18-21 ; Moscow)
}
Найти похожие

18.

Nanoparticle shape optimization for Tamm-plasmon-polariton-based organic solar cells in the visible spectral range / R. G. Bikbaev, S. Y. Vetrov, I. V. Timofeev, V. F. Shabanov // Photonics. - 2022. - Vol. 9, Is. 11. - Ст. 786, DOI 10.3390/photonics9110786. - Cited References: 28. - The reported study was funded by a grant of the President of the Russian Federation №MK-46.2021.1.2 . - ISSN 2304-6732
Кл.слова (ненормированные):
photonic crystal -- Tamm plasmon polariton -- organic solar cell
Аннотация: The effect of the shape of the nanoparticles and the polarization of incident light on the surface current density and the efficiency of an organic solar cell based on the Tamm plasmon polariton is investigated. In the cases of both elongated and flattened nanoparticles, it is shown that the efficiency of such a solar cell is increased when the electric field vector is parallel to the largest axis of the spheroid.

Смотреть статью,
Scopus,
Читать в сети ИФ
Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation

Доп.точки доступа:
Bikbaev, R. G.; Бикбаев, Рашид Гельмединович; Vetrov, S. Y.; Timofeev, I. V.; Тимофеев, Иван Владимирович; Shabanov, V. F.; Шабанов, Василий Филиппович
}
Найти похожие

19.

Optimization of light modulation characteristics in PDFLC cells / V. Ya. Zyryanov, S. L. Smorgon, V. F. Shabanov [et al.] // 7th International Symposium "Advanced Display Technologies" : proceedings. - 1998. - P. 58-61

Доп.точки доступа:
Zyryanov, V. Ya.; Зырянов, Виктор Яковлевич; Smorgon, S. L.; Shabanov, V. F.; Шабанов, Василий Филиппович; Pozhidaev, E. P.; Andreev, A. L.; Kompanets, I. N.; Shin, S. T.; "Advanced Display Technologies", International Symposium(7 ; 1998 ; 1-5 Dec. ; Minsk)
}
Найти похожие

20.

    Machine learning methods in assessing the effect of mixture composition on the physical and mechanical characteristics of road concrete / I. G. Endzhievskaya, A. S. Endzhievskiy, M. A. Galkin, M. S. Molokeev // J. Build. Eng. - 2023. - Vol. 76. - Ст. 107248, DOI 10.1016/j.jobe.2023.107248. - Cited References: 17. - The work was carried out within the framework of the Strategic Academic Leadership Program "Priority-2030" for the Siberian Federal University. The research in field of Machine Learning application was supported by the Tyumen Oblast Government, as part of the West-Siberian Interregional Science and Education Center’s project No. 89-DON (3) . - ISSN 2352-7102
   Перевод заглавия: Методы машинного обучения в оценке влияния состава смеси на физико-механические характеристики дорожного бетона
Кл.слова (ненормированные):
Concrete optimization -- Random forest -- Decision tree -- Machine learning -- Сement concrete roads
Аннотация: Current manuscript presents a study on the use of 48 experimental data points containing parameters of concrete production technological process and its properties, such as strength, density, and bending strength. It was revealed that temporal characteristics, specifically - compressive strength at the age of 3, 7, 28 days, R3, R7, and R28, are significantly correlated with each other, indicating that only one characteristic, such as R28 or Rfl 28, is sufficient for prediction. The absence of multiple correlations between parameters and properties suggests that linear regression analysis may not be accurate. Therefore, the use of Machine Learning is optimal; specifically Random Forest method is preferable due to ease of use and minimum hyperparameters for tuning. Low prediction errors (?1–11%) for 30% of the test data, as determined by the cross-validation method, confirm a relationship between the experimental parameters and the concrete properties. The most important parameters for achieving high values of compressive and bending strengths, R28 and Rfl 28, were identified, namely: air-entraining additives, granite crushed stone consisting of a mixture of fractions 5–20 mm, crushed stone derived from gravel of high strength grains of large fractions 10–20 mm. To obtain explanatory model, another Machine Learning method, that was used, called Decision Tree. The model showed that a high amount of crushed stone 10–20 mm from gravel, more than 212 (kg per 1 m3 of concrete mix), leads to a higher number of strong grains with smooth, rounded surface, thereby, reducing the bending strength of concrete. However, a large concentration of crushed stone mix fractions of 5–20 mm from granite, more than 537 (kg per 1 m3 of concrete mix), leads to the maximum roughness, which makes a significant contribution to the increased strength of concrete due to the adhesion of the matrix and aggregates to each other.

Смотреть статью,
WOS,
Читать в сети ИФ
Держатели документа:
Siberian Federal University, Svobodny Ave., 79, Krasnoyarsk, 660041, Russia
Laboratory of Theory and Optimization of Chemical and Technological Processes, University of Tyumen, Tyumen, 625003, Russia
Laboratory of Crystal Physics, Kirensky Institute of Physics SB RAS, Krasnoyarsk, 660036, Russia

Доп.точки доступа:
Endzhievskaya, I. G.; Endzhievskiy, A. S.; Galkin, M. A.; Molokeev, M. S.; Молокеев, Максим Сергеевич
}
Найти похожие