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1.
Dielectric
and transport
properties, electric polarization at the sequential structural phase transitions in iron-substituted bismuth pyrostannate / S. S. Aplesnin, L. V. Udod, M. N. Sitnikov, O. B. Romanova> // Ceram. Int. - 2021. -
Vol. 47
,
Is. 2
. - P. 1704-1711,
DOI
10.1016/j.ceramint.2020.08.287. - Cited References: 33. - The reported study was funded by Russian Foundation for Basic Research project № 20-52-00005 Bel_a . - ISSN 0272-8842
Кл.слова (ненормированные):
Dielectric
properties
--
Impedance
--
Electrical conductivity
--
Electric polarization
--
Thermopower
Аннотация:
The electrical characteristics including the electrical resistance, impedance, I–V characteristics, capacitance, dissipation factor, and thermoelectric power of the Bi2Sn2-хFeхO7 (х = 0.1, 0.2) stannates have been investigated in the temperature range of 100–600 K at frequencies of 102–106 Hz. The paramagnetic contribution of electrons to the dynamic magnetic susceptibility has been established. The conductivity mechanism of the compounds has been found from the I–V characteristics and the change in the carrier sign has been determined from the thermoelectric power. The hysteresis of the I–V curves, charge transfer currents and polarization current have been observed in the Bi2Sn1·8Fe0·2O7 compound. A nonlinear field dependence of the polarization in the orthorhombic phase has been found. The correlation between the obtained characteristics and the phase structure transitions has been established. Two relaxation channels and activation energy have been found using the Debye model. The hysteretic I–V characteristics have been explained using a model of the electronic structure and the dipole and migration polarization.
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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Akademgorodok, 50, Krasnoyarsk, 660036, Russian Federation
Reshetnev Siberian State University of Science and Technology, Krasnoyarsk, 660037, Russian Federation
Доп.точки доступа:
Aplesnin, S. S.; Аплеснин, Сергей Степанович; Udod, L. V.; Удод, Любовь Викторовна; Sitnikov, M. N.; Romanova, O. B.; Романова, Оксана Борисовна
}
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2.
Музалевский, Константин Викторович
.
Дистанционное измерение профилей влажности в пахотном слое почвы на основе поляриметрических наблюдений коэффициента отражения в P- и C-диапазонах частот. Эксперимент / К. В. Музалевский> // Соврем. проблемы дистанц. зондир. Земли из космоса. - 2020. -
Т. 17
,
№ 3
. - С. 145-148,
DOI
10.21046/2070-7401-2020-17-3-145-148. - Библиогр.: 5. - Работа выполнена в рамках проекта Российского фонда фундаментальных исследований № 18-05-00405, методика измерения коэффициентов отражения была развита при поддержке проекта государственного задания № 0356-2019-0004 . - ISSN 2070-7401. - ISSN 2411-0280
Перевод заглавия:
Remote sensing of moisture profiles in the arable soil layer based on polarimetric observations of the reflection coefficient in the P- and C-bands. Experiment
Кл.слова (ненормированные):
радиолокация
--
беспилотный летательный аппарат
--
агропочвы
--
влажность почвы
--
пахотный слой
--
диэлектрическая проницаемость
--
Radar
--
Unmanned aerial vehicle
--
Agricultural soils
--
Soil moisture
--
Arable layer
--
Dielectric
constant
Аннотация:
В данном сообщении экспериментально подтверждена принципиальная возможность дистанционного измерения профилей влажности в пахотном слое почвы с пригодной для практического применения точностью на основе поляриметрических измерений коэффициента отражения на двух частотах 630 МГц и 5,4 ГГц. Коэффициенты отражения измерялись под углом 35° импульсным методом в ходе естественных циклов испарения и увлажнения пахотного слоя почвы на участке сельскохозяйственного поля, находящегося под паром в районе пос. Минино, Красноярский край. Профили влажности почвы восстанавливались в ходе решения обратной задачи, информативным признаком в которой выступало отношение коэффициентов обратного радарного рассеяния на согласованных линейных поляризациях. Отношение коэффициентов обратного радарного рассеяния было оценено в скалярном приближении метода Кирхгофа в виде отношения коэффициентов отражения по мощности, измеренных на горизонтальной и вертикальной поляризациях. Среднеквадратическое отклонение и коэффициент детерминации между восстановленными и измеренными значениями объёмной влажности в поверхностном слое почвы толщиной 10 см оказались равны 2,2 % и 0,91 соответственно. Исследование показывает перспективность разработки поляриметрических многочастотных радиолокационных систем комбинированного сверхвысокочастотного и дециметрового диапазонов для дистанционного зондирования профилей влажности пахотного слоя почв.
This report experimentally confirmed the fundamental possibility of remote sensing of moisture profiles in the arable soil layer with practical acceptable accuracy based on polarimetric measurements of the reflection coefficient at two frequencies of 630 MHz and 5.4 GHz. Reflection coefficients were measured at an angle of 35° by the impulse method, during natural cycles of the evaporation and moistening of soil arable layer in a plot of an agricultural field under steam in the area of Minino village, Krasnoyarsk region. Soil moisture profiles were retrieved in the course of solving the inverse problem, in which cost function was the ratio of the backscattering coefficients taken on coincident linear polarizations. The ratio of the backscattering coefficients was estimated by the scalar Kirchhoff approximation in the form of a ratio of power reflection coefficients, which were measured on horizontal and vertical polarizations. The standard deviation and the determination coefficient between the retrieved and measured soil moisture in the 10 cm topsoil were 2.2 % and 0.91, respectively. The study shows the prospects of developing polarimetric multi-frequency radar systems of combined UHF and SHF bands for remote sensing of moisture profiles in the arable layer of soils.
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Держатели документа:
Kirensky Institute of Physics SB RAS, Krasnoyarsk, 660036, Russian Federation
Доп.точки доступа:
Muzalevskiy, K. V.
}
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3.
An ultra-wideband stripline
bandpass filter with a noise suppression level of more than 100 dB / B. A. Belyaev, A. M. Serzhantov, A. A. Leksikov [et al.]> // Tech. Phys. Lett. - 2020. -
Vol. 46
,
Is. 8
. - P. 787-791,
DOI
10.1134/S1063785020080179. - Cited References: 9. - This work was financially supported by the Ministry of Science and Higher Education of the Russian Federation in the implementation of the integrated project "Creation of a production of earth stations of advanced satellite communications systems to ensure the coherence of hard, northern and Arctic territory of Russian Federation," implemented with the participation of the Federal Research Center "Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences|" (agreement number 075-11-2019-078 dated 13.12.2019) . - ISSN 1063-7850. - ISSN 1090-6533
РУБ
Physics, Applied
Кл.слова (ненормированные):
passband filter
--
resonator
--
dielectric
substrate
--
strip conductors
Аннотация:
An ultra-wideband bandpass filter formed by cascading of a novel high-pass filter (HPF) and a low-pass filter (LPF) on suspended substrates with a two-sided pattern of strip conductor has been investigated. The high selectivity of the HPF is ensured by the transmission zeros near the passband, the number of which is equal to the filter order. A second-order HPF has been designed on a 0.5-mm-thick substrate with a permittivity of ε = 9.8 using the numerical electrodynamic analysis of a 3D model of the filter. The experimental HPF prototype has a cutoff frequency of fb = 0.25 GHz at a level of –3 dB and a passband that extends to 5 GHz. The ultra-wideband bandpass filter formed by cascading of the LPF and the designed HPF has a fractional bandwidth of Δf/f0 = 150% with a central frequency of f0 = 1 GHz. It has the broad and deep high-frequency stopband, which extends to a frequency of 7.8f0 at a suppression level of –100 dB.
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Публикация на русском языке
Полосковый сверхширокополосный полосно-пропускающий фильтр с уровнем подавления помех более 100 dB [Текст] / Б. А. Беляев, А. М. Сержантов, Ан. А. Лексиков [и др.] // Письма в Журн. техн. физ. - 2020. - Т. 46 Вып. 16. - С. 7-11
Держатели документа:
Russian Acad Sci, Kirensky Inst Phys, Krasnoyarsk Sci Ctr, Siberian Branch, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Inst Engn Phys & Radio Elect, Krasnoyarsk 660041, Russia.
Доп.точки доступа:
Belyaev, B. A.; Беляев, Борис Афанасьевич; Serzhantov, A. M.; Leksikov, An. A.; Лексиков, Андрей Александрович; Bal'va, Y. F.; Бальва, Ярослав Федорович; Grushevskii, E. O.; Грушевский, Евгений Олегович; Ministry of Science and Higher Education of the Russian Federation [075-11-2019-078]
}
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4.
Udod, L. V.
Magnetic properties of bismuth pyrostannate doped with 3D ions / L. V. Udod, S. S. Aplesnin, M. N. Sitnikov> // Inorg. Mater.: Appl. Res. - 2020. -
Vol. 11
,
Is. 4
. - P. 809-814,
DOI
10.1134/S2075113320040383. - Cited References: 11. - This study was supported by the Russian Foundation for Basic Research, project nos. 18-52-00009 Bel_a, 18-42-240001 r_a, and 18-32-00079 mol_a and state assignment no. 3.5743.2017/6.7 . - ISSN 2075-1133
Кл.слова (ненормированные):
crystal structure
--
magnetic and
dielectric
properties
--
I–V characteristic
--
conductivity
--
phase transitions
Аннотация:
The effect of substitution of Cr3+ and Mn4+ ions for tin in bismuth pyrostannate on the magnetic properties of the compound has been investigated. The interrelation between the magnetic,
dielectric
, and electrical properties has been established. Qualitative dependences of the temperature behavior of the permittivity and magnetic susceptibility on the substituent ion have been obtained. A change in the conductivity type from hopping to tunneling has been found.
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Публикация на русском языке
Удод, Любовь Викторовна. Магнитные свойства пиростанната висмута, допированного 3d-ионами [Текст] / Л. В. Удод, С. С. Аплеснин, М. Н. Ситников // Материаловедение. - 2019. - № 10. - С. 19-24
Держатели документа:
Kirensky Institute of Physics, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Reshetnev Siberian State University of Science and Technology, Krasnoyarsk, 660037, Russian Federation
Доп.точки доступа:
Aplesnin, S. S.; Аплеснин, Сергей Степанович; Sitnikov, M. N.; Удод, Любовь Викторовна
}
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5.
Maksimov, D. N.
Optical bistability with bound states in the continuum in
dielectric
gratings / D. N. Maksimov, A. A. Bogdanov, E. N. Bulgakov> // Phys. Rev. A. - 2020. -
Vol. 102
,
Is. 3
. - Ст. 033511,
DOI
10.1103/PhysRevA.102.033511. - Cited References: 53. - This work was financially supported by the Government of the Russian Federation through the ITMO Fellowship and Professorship Program. A.A.B. also acknowledges support by the Ministry of Science and Higher Education of Russian Federation, goszadanie No. 2019-1246 and RFBR (18-32-20205) . - ISSN 2469-9926. - ISSN 2469-9934
РУБ
Optics + Physics, Atomic, Molecular & Chemical
Рубрики:
COUPLED-MODE THEORY
WAVE-GUIDE
TRANSITION
RESONANCE
ARRAYS
Аннотация:
We consider light scattering by
dielectric
gratings supporting optical bound states in the continuum. Due to the presence of instantaneous Kerr nonlinearity critical field enhancement in the spectral vicinity of the bound state triggers the effect of optical bistability. The onset of bistability is explained theoretically in the framework of the temporal coupled-mode theory. As the central result we cast the problem in the form of a single field-driven nonlinear oscillator. The theoretical results are verified in comparison with numerical simulations.
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Держатели документа:
Siberian Fed Univ, Krasnoyarsk 660041, Russia.
RAS, Fed Res Ctr KSC SB, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
ITMO Univ, Dept Phys & Engn, St Petersburg 191002, Russia.
Reshetnev Siberian State Univ Sci & Technol, Krasnoyarsk 660037, Russia.
Доп.точки доступа:
Bogdanov, A. A.; Bulgakov, E. N.; Булгаков, Евгений Николаевич; Максимов, Дмитрий Николаевич; Government of the Russian Federation through the ITMO Fellowship; Ministry of Science and Higher Education of Russian Federation, goszadanie [2019-1246]; RFBRRussian Foundation for Basic Research (RFBR) [18-32-20205]
}
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6.
Полевое тестирование метода
картографического моделирования влагозапасов поверхностного слоя почвенного покрова, основанного на данных радарной съёмки Sentinel-1 и цифровой модели рельефа / А. М. Зейлигер, K. V. Muzalevskiy, Е. В. Зинченко [и др.]> // Соврем. проблемы дистанц. зондир. Земли из космоса. - 2020. -
Т. 17
,
№ 4
. - С. 113-128,
DOI
10.21046/2070-7401-2020-17-4-113-128. - Библиогр.: 32 . - ISSN 2070-7401. - ISSN 2411-0280
Перевод заглавия:
Field testing of the cartographic modeling of soil water content of the surface layer of soil cover based on Sentinel-1 radar survey and digital elevation model
Кл.слова (ненормированные):
почвенный покров
--
влажность почвы
--
точечные данные
--
растровые данные
--
гранулометрический состав
--
шероховатость земной поверхности
--
цифровая модель местности
--
БПЛА
--
радарная съёмка
--
Sentinel-1
--
обратное радарное рассеяние
--
нейронные сети
--
диэлектрическая модель почвы
--
Soil cover
--
Soil moisture
--
Raster data
--
Particle size distribution
--
Surface roughness
--
Digital terrain model
--
UAV
--
Radar imaging
--
Sentinel-1
--
Radar backscatter
--
Neural networks
--
Dielectric
soil model
Аннотация:
Влагосодержание поверхностного слоя почвенного покрова (ВПС ПП) является одним из ключевых параметров, используемых для количественного описания гидрологического состояния поверхности почвы, а также при оценке доступности почвенной влаги растительному покрову. Поскольку коэффициент обратного радарного рассеяния чувствителен к влажности почвы, в настоящей работе применялись данные Sentinel-1 для картирования влажности почвы с высоким пространственным разрешением с целью отображения пространственных и временных закономерностей распределения почвенной влаги на уровне поля в практике управления почвенными и водными ресурсами. Прямые измерения ВПС ПП толщиной 5 см были реализованы в результате проведённого полевого мониторинга на экспериментальном участке, расположенном на территории Всероссийского научно-исследовательского института орошаемого земледелия (пос. Водный, Волгоградская обл.). В заданных координатах на тестовом участке были отобраны соответствующие почвенные образцы, влагосодержание которых было определено с использованием термостатно-весового метода. В результате создан первый точечный слой геоданных ВПС ПП. По данным радарной съёмки Sentinel-1 была выполнена оценка ВПС ПП для того же пространственного экстента экспериментального участка. Значения растрового набора значений влажности почвы по данным дистанционного зондирования (ВПС ПП-ДЗЗ) в пределах границ экспериментального участка были рассчитаны по данным радарной съёмки Sentinel-1. Эти расчёты основаны на оценке отражательной способности почвы, полученной методом нейронной сети, и дальнейшего решения обратной задачи с использованием диэлектрической модели, учитывающей содержание глинистой фракции почвы тестового участка. В ходе тренировки нейронной сети использовались входные данные коэффициентов обратного радарного рассеяния, измеренные Sentinel-1 на согласованной вертикальной и перекрёстной поляризации, и выходное значение отражательной способности почвы, оценённое на основе точечного слоя геоданных ВПС ПП и диэлектрической модели. Ортотрансформация снимка Sentinel-1 осуществлялась с использованием цифровой модели рельефа (ЦМР), созданной в результате стереосъёмки, выполненной с использованием беспилотного летательного аппарата Phantom 4 Pro. В результате сравнения наборов геоданных ВПС ПП и ВПС ПП-ДЗЗ, полученных в ходе полевого мониторинга и дистанционного зондирования соответственно, были оценены значения коэффициента детерминации (0,948) и стандартного отклонения (2,04 %). Этот результат подтверждает удовлетворительную линейную корреляцию между наборами ВПС ПП и ВПС ПП-ДЗЗ. Сравнение двух полученных точечных слоёв геоданных ВПС ПП указывает на удовлетворительное воспроизведение первого набора вторым. Такой вывод получен в результате наземного мониторинга и картографического моделирования, выполненного с помощью разработанного метода с использованием данных радарной съёмки Sentinel-1 и характеристик ЦМР. Результаты исследования позволяют сделать вывод, что разработанный метод может рассматриваться в качестве научной и методологической основы новой технологии картографического мониторинга ВПС ПП, которая рассматривается в настоящее время в качестве одной из основных базовых характеристик для использования в точном орошаемом земледелии.
The surface moisture content (SMC) is one of the key parameters, which is used for the quantitative description of soil hydrological state as well as the estimation of soil water availability to vegetation canopy. Since the radar backscattering coefficient is sensitive to SMC, in this investigation Sentinel-1 data was used for soil moisture mapping with a high spatial resolution, based on which the spatial and temporal patterns of soil moisture distribution at field level was mapped for implementing in the management of soil and water resources. Direct measurements of SMC in a layer thickness of 5 cm were carried out during field monitoring at an experimental test site, located on the territory of the All-Russian Scientific Research Institute of Irrigated Agriculture (Vodny village, Volgograd region). In the given coordinates on the test site, soil samples were taken, the moisture content of which was determined using the thermostat-weight method. As a result, the first point georeferenced layer of SMC was created. At the same time, the estimation of SMC based on Sentinel-1 radar observations was performed for the same spatial extent of the test site. The raster set of SMC within the boundaries of the test site was calculated from the Sentinel-1 remote sensing (RS) observations. This layer will be named SMC-RS. These calculations were based on the assessment of soil reflectivity obtained by neural network (NN) method and the further solution of the inverse problem using a
dielectric
model, which takes into account the soil clay content at the test site. During the training of the NN, backscatter coefficients measured by Sentinel-1 at co- and cross-polarization were used as input data. As the output data of the NN, the value of soil reflectivity, which was estimated based on point georeferenced layer of SMC and a
dielectric
model were used. Terrain correction of Sentinel-1 image was carried out using a digital elevation model (DEM), created by Phantom 4 Pro unmanned aerial vehicle as the result of stereo photography. As a result of comparing the georeferenced data sets SMC and SMC-RS obtained during field monitoring and remote sensing, respectively, the following values of determination coefficient (0.948) and standard deviation (2.04 %) were estimated. This result confirms a satisfactory linear correlation between both data sets. The comparison of the two layers of point georeferenced data sets indicates that the first set is well correlated by the second. This conclusion was obtained as the result of ground monitoring and cartographic modelling carried out using the developed method, Sentinel-1 observation and DEM. The developed method can be considered as the scientific and methodological basis of the new technology for the cartographic monitoring of SMC, which is currently treated as one of the main basic characteristics to be used in precision irrigated agriculture. © 2020 Space Research Institute of the Russian Academy of Sciences. All rights reserved.
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Держатели документа:
Российский государственный аграрный университет ― МСХА имени К. А. Тимирязева, Москва, Россия
Институт физики им. Л.В. Киренского СО РАН, Красноярск, Россия
Всероссийский научно-исследовательский институт орошаемого земледелия, Волгоград, Россия
Доп.точки доступа:
Зейлигер, А. М.; Muzalevskiy, K. V.; Музалевский, Константин Викторович; Зинченко, Е. В.; Ермолаева, О. С.; Мелихов, В. В.
}
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7.
Bulgakov, E. N.
Giant resonant enhancement of optical binding of
dielectric
disks / E. N. Bulgakov, K. N. Pichugin, A. F. Sadreev> // J. Opt. Soc. Am. B. - 2020. -
Vol. 37
,
Is. 11
. - P. 3335-3340,
DOI
10.1364/JOSAB.402659. - Cited References: 30. - Russian Science Support Foundation (19-02-00055) . - ISSN 0740-3224
Кл.слова (ненормированные):
Aspect ratio
--
Bessel functions
--
Laser beams
Аннотация:
Two-fold variation over the aspect ratio of each disk and distance between disks gives rise to numerous events of avoided crossing of resonances of individual disks. For these events, the hybridized anti-bonding resonant modes can acquire a morphology close to the Mie resonant mode with the high orbital momentum of an equivalent sphere. The factor of such resonance can exceed the factor of an isolated disk by two orders of magnitude. We show that dual incoherent counterpropagating coaxial Bessel beams with power 1mW/µm2 with frequency resonant to such anti-bonding Mie-like modes result in unprecedented optical binding forces up to tens of nano-Newtons for silicon micrometer-sized disks. We show also that the magnitude and sign of optical forces depend strongly on the longitudinal wave vector of the Bessel beams.
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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC, SB RAS, Krasnoyarsk, 660036, Russian Federation
Reshetnev Siberian State University of Science and Technology, Krasnoyarsk, 660037, Russian Federation
Доп.точки доступа:
Pichugin, K. N.; Пичугин, Константин Николаевич; Sadreev, A. F.; Садреев, Алмаз Фаттахович; Булгаков, Евгений Николаевич
}
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8.
Bikbaev, R. G.
Hybrid Tamm and surface plasmon polaritons in resonant photonic structure / R. G. Bikbaev, S. Y. Vetrov, I. V. Timofeev> // J. Quant. Spectrosc. Radiat. Transf. - 2020. -
Vol. 253
. - Ст. 107156,
DOI
10.1016/j.jqsrt.2020.107156. - Cited References: 58. - The reported study was funded by Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Region Science and Technology Support Fund to the research project No. 19-42-240004 and by a joint project of the Russian Foundation for Basic Research, project No. 19-52-52006, and the Taiwan Ministry of Science and Technology, project No. 108-2923E-009-003-MY3 . - ISSN 0022-4073
Кл.слова (ненормированные):
Tamm plasmon polariton
--
Surface plasmon polariton
--
Metal-
dielectric
nanocomposite
--
Hybrid mode
--
Optical sensor
Аннотация:
Hybrid modes originating from the coupling of the Tamm and surface plasmon polaritons excited in a one-dimensional resonant photonic structure are demonstrated. The structure represents a photonic crystal bounded by a nanocomposite film consisting of a transparent matrix and silver nanoparticles uniformly distributed over its volume. In comparison with structures on planar metal films the volume concentration and shape of nanoparticles are of great help in configuring the hybrid mode properties, including their wavelength and splitting. Also the radiation incidence angle variation opens the possibility of fine-tuning the energy spectra of the structure. We demonstrate the high-sensitivity of optical sensors based on the resonant photonic structure.
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Держатели документа:
L.V. Kirensky Institute of Physics, Federal Research Center KSC SB RAS660036, Krasnoyarsk, Russian Federation
Siberian Federal University660041, Krasnoyarsk, Russian Federation
Доп.точки доступа:
Vetrov, S. Ya.; Ветров, Степан Яковлевич; Timofeev, I. V.; Тимофеев, Иван Владимирович; Бикбаев, Рашид Гельмединович
}
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9.
A Bandpass Filter–Polarizer
Based on a
Dielectric
Multilayer with Strip Conductor Gratings / B. A. Belyaev, V. V. Tyurnev, A. S. Voloshin [et al.]> // Dokl. Phys. - 2020. -
Vol. 65
,
Is. 7
. - P. 225-229,
DOI
10.1134/S1028335820050067. - Cited References: 10. - This study was financially supported by the Ministry of Science and Higher Education of the Russian Federation in the implementation of the integrated project “Creation of a production of earth stations of advanced satellite communications systems to ensure the coherence of hard-to-reach, northern and Arctic territories of Russian Federation,” implemented with the participation of the Federal Research Center “Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences” (agreement number 075 -11-2019-078 dated 13.12.2019) . - ISSN 1028-3358
Кл.слова (ненормированные):
frequency response
--
return loss
--
bandpass filter
--
insertion loss
Аннотация:
A new design of a multilayer bandpass filter is proposed, in which each resonator consists of two identical
dielectric
layers with parallel strip conductor gratings on their outer surfaces and an orthogonal strip conductor grating between the layers. The filter designed on the basis of crossed gratings works simultaneously as a polarizer transparent in a specified frequency band if the electric field vector of a wave is parallel to the outer strip conductors but reflects waves with an orthogonal polarization. The data from a numerical electrodynamic analysis of a 3D model of the proposed device agree well with the results of the measurements performed on the fifth-order filter–polarizer prototype with a relative bandwidth of 14% and a central frequency of 13.4 GHz. The microwave power loss in the filter passband is ~1.2 dB under parallel polarization of the electromagnetic wave and more than 40 dB under orthogonal polarization.
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Публикация на русском языке
Полосно-пропускающий фильтр-поляризатор на диэлектрической слоистой структуре с решетками полосковых проводников [Текст] / Б. А. Беляев, В. В. Тюрнев, А. С. Волошин [и др.] // Доклады Академии наук. Физика, технические науки. - 2020. - Т. 493 № 1. - С. 5-10
Держатели документа:
Kirenskii Institute of Physics, Krasnoyarsk Science Center, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Siberian State University of Science and Technology, Krasnoyarsk, 660014, Russian Federation
Доп.точки доступа:
Belyaev, B. A.; Беляев, Борис Афанасьевич; Tyurnev, V. V.; Тюрнев, Владимир Вениаминович; Voloshin, A. S.; Волошин, Александр Сергеевич; Leksikov, An. A.; Лексиков, Андрей Александрович; Galeev, R. G.; Shabanov, V. F.; Шабанов, Василий Филиппович
}
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10.
Bulgakov, E. N.
Giant resonant enhancement of optical binding of
dielectric
particles / E. N. Bulgakov, K. N. Pichugin, A. F. Sadreev> // Phys. Rev. A. - 2020. -
Vol. 102
,
Is. 4
. - Ст. 043518,
DOI
10.1103/PhysRevA.102.043518. - Cited References: 49. - This work was supported by Russian Foundation for Basic Research Project No. 19-02-00055. A.S. thanks D. Maksimov and E. Sherman for helpful discussions . - ISSN 2469-9926. - ISSN 2469-9934
РУБ
Optics + Physics, Atomic, Molecular & Chemical
Рубрики:
FORCE
SPHERES
BEAM
Аннотация:
Optical coupling of two identical
dielectric
particles gives rise to bonding and antibonding resonances. The latter is featured by significant narrowing of the resonant width and strong enhancement of the Q factor for the high-index micron-size particles in subwavelength range. We consider particles shaped as spheres and disks under coaxial illumination of dual incoherent counterpropagating Bessel beams. In the case of spheres we derive analytical expressions for the optical binding (OB) force which decays and displays two periods of oscillations. For close distances the OB force enormously increases in the resonant regime. The case of two coaxial disks is featured by extremal enhancement of the Q factor owing to the twofold variation over the distance between disks and the aspect ratio of each disk compared to the case of two spheres. In that case we demonstrate enhancement of the OB force up to several tens of nanonewtons. We show that the magnitude and sign of the OB force strongly depend on the longitudinal wave vector of the Bessel beams.
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Держатели документа:
RAS, Kirensky Inst Phys, Fed Res Ctr, KSC,SB, Krasnoyarsk 660036, Russia.
Доп.точки доступа:
Pichugin, K. N.; Пичугин, Константин Николаевич; Sadreev, A. F.; Садреев, Алмаз Фаттахович; Булгаков, Евгений Николаевич; Russian Foundation for Basic Research ProjectRussian Foundation for Basic Research (RFBR) [19-02-00055]
}
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11.
A Bandpass Filter
Based on
Dielectric
Layers with a Strip Conductor Subwavelength Grating at Their Interfaces / B. A. Belyaev, V. V. Tyurnev, A. S. Voloshin [et al.]> // Dokl. Phys. - 2020. -
Vol. 65
,
Is. 9
. - P. 343-348,
DOI
10.1134/S1028335820090013. - Cited References: 12. - This study was supported by the Ministry of Science and Higher Education of the Russian Federation, state assignment no. FEFE-2020-0013 “Development of the Theory of Self-Configurable Machine-Learning Algorithms for Simulating and Predicting Characteristics of Complex Systems” . - ISSN 1028-3358
Кл.слова (ненормированные):
frequency response
--
return loss
--
passband filter
--
insertion loss
Аннотация:
The design of a multilayer bandpass filter has been investigated, in which each of the half-wavelength resonators consists of two
dielectric
layers with outer strip conductor gratings in the form of square grids and inner ones in the form of square patches. The grids serve as mirrors with specified reflective properties, which ensure optimal couplings of the outer resonators with free space and optimal coupling between the resonators. The patch gratings make it possible to tune the resonator eigenfrequency during the filter synthesis. The efficiency of the quasi-static calculation of the frequency response for the layered structure is shown for the case of a lattice period smaller than the wavelength in the
dielectric
and much smaller than the layer thickness. Since the calculation does not require much computing power, the parametric synthesis of the device can be performed on a conventional personal computer. The measured characteristics of the prototype of the synthesized third-order filter with a fractional passband width of ∼10% and a central passband frequency of ∼10.6 GHz are in good agreement with the calculation. The proposed design allows one to fabricate multilayer panels radio transparent in a certain frequency band for hiding microwave antennas.
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Публикация на русском языке
Полосно-пропускающий фильтр из диэлектрических слоев с субволновыми решетками полосковых проводников на границах [Текст] / Б. А. Беляев, В. В. Тюрнев, А. С. Волошин [и др.] // Доклады Академии наук. Физика, технические науки. - 2020. - Т. 494 № 1. - С. 75-81
Держатели документа:
Kirensky Institute of Physics, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Siberian State University of Science and Technology, Krasnoyarsk, 660014, Russian Federation
Доп.точки доступа:
Belyaev, B. A.; Беляев, Борис Афанасьевич; Tyurnev, V. V.; Тюрнев, Владимир Вениаминович; Voloshin, A. S.; Волошин, Александр Сергеевич; Leksikov, An. A.; Лексиков, Андрей Александрович; Galeev, R. G.; Shabanov, V. F.; Шабанов, Василий Филиппович
}
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12.
Belyaev, B. A.
Study of an Electromagnetic Wave Transmission Line Based on Coupled
Dielectric
Resonators / B. A. Belyaev, K. V. Lemberg, V. F. Shabanov> // Dokl. Phys. - 2019. -
Vol. 64
,
Is. 11
. - P. 409-413,
DOI
10.1134/S1028335819110053. - Cited References: 7. - This study was supported by the Ministry of Science and Higher Education, project no. RFMEFI60417X0179. . - ISSN 1028-3358. - ISSN 1562-6903
Кл.слова (ненормированные):
waveguide
--
plasmon resonance
--
electromagnetically coupled resonators
Аннотация:
An analog of an optical waveguide in the form of a chain of metallic nanoparticles has been investigated using modified cylindrical
dielectric
resonators in the microwave band. Similar to the plasma oscillations in spherical nanoparticles, the two lowest resonances of the
dielectric
resonator correspond to the dipole and quadrupole oscillatory modes. It is shown that a waveguide consisting of seven resonators exhibits high frequency selective properties and relatively low loss if the resonances of the quadrupole oscillatory modes are used to form its passband. The characteristics of the investigated waveguide remain almost unchanged at its bending by 90°, and the cross section of localization of the main part of the energy propagating in the waveguide is smaller than the electromagnetic wavelength by a factor of five, which approximately corresponds to the optical waveguides based on plasma oscillations in nanoparticles.
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Беляев, Борис Афанасьевич. Исследование линии передачи электромагнитных волн на связанных диэлектрических резонаторах [Текст] / Б. А. Беляев, К. В. Лемберг, В. Ф. Шабанов // Доклады Академии наук. - 2019. - Т. 489 № 3. - С. 240-245
Держатели документа:
Kirenskii Institute of Physics, Krasnoyarsk Science Center, Siberian Branch, Russian Academy of Sciences, 660036, Krasnoyarsk, Russia
Siberian Federal University, 660041, Krasnoyarsk, Russia
Reshetnev Siberian State University of Science and Technology, 660014, Krasnoyarsk, Russia
Доп.точки доступа:
Lemberg, K. V.; Лемберг, Константин Вячеславович; Shabanov, V. F.; Шабанов, Василий Филиппович; Беляев, Борис Афанасьевич
}
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13.
A
dielectric
model
of thawed and frozen Arctic soils considering frequency, temperature, texture and dry density / V. L. Mironov, A. Yu. Karavayskiy, Yu. I. Lukin, I. P. Molostov> // Int. J. Remote Sens. - 2020. -
Vol. 41
,
Is. 10
. - P. 3845-3865,
DOI
10.1080/01431161.2019.1708506. - Cited References: 39 . - ISSN 0143-1161. - ISSN 1366-5901
Аннотация:
A
dielectric
model was developed for thawed and frozen mineral soils, based on the refractive mixing
dielectric
formula and the
dielectric
measurement data for three soils collected in the Arctic tundra of the Yamal Peninsula. The refractive mixing
dielectric
model was used in conjunction with the Debye multi relaxation equations as a theoretical model to fit the measured complex relative permittivity spectra as a function of soil moisture and temperature. As a result, the
dielectric
spectroscopic parameters for the various components of water in the soil, such as the low- and high-frequency limits of the complex relative permittivity, the times of the corresponding relaxations, and the specific conductivity, were simultaneously determined for soils with different clay contents for all measured temperatures. As the theoretical temperature dependences of these parameters, the Clausius–Mossotti, Eyring, and linear equations for the conductivity were used. By using approximations of the measured data with these formulas, the parameters of the temperature-dependent model were derived, such as the coefficient of volume expansion, energy and entropy of activation, and coefficient of thermal conductivity. A set of the parameters discussed above in conjunction with the refractive mixing formula is a temperature- and mineralogically dependent multi-relaxation spectroscopic
dielectric
model, which enables estimation of the permittivity of moist soils as a function of dry soil density, moisture, frequency, temperature, and texture. The statistical error of the proposed
dielectric
model was estimated in terms of the normalized root-mean-square error (nRMSE), which was equal to 5% and 25% for the
dielectric
constant and
dielectric
loss factor, respectively.
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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russia
Altai State University, Barnaul, Russia
Доп.точки доступа:
Mironov, V. L.; Миронов, Валерий Леонидович; Karavayskiy, A. Yu.; Каравайский, Андрей Юрьевич; Lukin, Y. I.; Лукин, Юрий Иванович; Molostov, I. P.
}
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14.
Features of Raman
spectra in barium titanate pressed powder / I. V. Zaytseva [et al.]> // IOP Conf. Ser.: Mater. Sci. Eng. - 2019. -
Vol. 699
,
Is. 1
. - Ст. 012058,
DOI
10.1088/1757-899X/699/1/012058. - Cited References: 16. - The reported study was funded by RFBR according to the research projects No. 19-42-543-016 and 18-02-00399 and State assignment No AAAA-A17-117052410033-9. The experiments were performed in the multiple-access centre “High-Resolution Spectroscopy of Gases and Condensed Matter” in IA&E SBRAS (Novosibirsk, Russia) and Centre for Common Use of the Krasnoyarsk Scientific Centre, SBRAS (Krasnoyarsk, Russia). . - ISSN 1757-8981. - ISSN 1757-899X
Перевод заглавия:
Особенности спектров комбинационного рассеяния в прессованном порошке титаната бария
Аннотация:
Raman spectra in barium titanate powder under non-hydrostatic pressures are presented. The relationship between the pressure (up to 11 GPa) and the shift and the width of E(TO)-phonon line has been established. It has been found that under the action of uniaxial pressure a new Raman peak arises in the vicinity of 100 cm−1. It is shown that the Raman shift and width of both peaks increase depending on the applied pressure. These Raman lines broadening may be associated with an increase of the concentration of defect states in the volume of the sample.
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Держатели документа:
Institute of Automation and Electrometry SB RAS, 630090 Novosibirsk, Russia
Kirensky Institute of Physics Federal Research Centre KSC SB RAS, 660036 Krasnoyarsk, Russia
Доп.точки доступа:
Zaytseva, I. V.; Pugachev, A. M.; Surovtsev, N. V.; Krylov, A. S.; Крылов, Александр Сергеевич; SPM-2019-RCWDFM Joint International Conference (3rd International Conference "Scanning Probe Microscopy" (SPM), the 4th Russia-China Workshop on
Dielectric
and Ferroelectric Materials (RCWDFM), and International Youth Conference "Functional Imaging of Nanomaterials")(25-28 August 2019 ; Ekaterinburg, Russia)
}
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15.
Collective lattice resonances
in arrays of
dielectric
nanoparticles: a matter of size / V. I. Zakomirnyi [et al.]> // Opt. Lett. - 2019. -
Vol. 44
,
Is. 23
. - P. 5743-5746,
DOI
10.1364/OL.44.005743. - Cited References: 66. - Russian Science Foundation (19-72-00066). . - ISSN 0146-9592. - ISSN 1539-4794
Аннотация:
Collective lattice resonances (CLRs) in finite-sized 2D arrays of
dielectric
nanospheres have been studied via the coupled dipole approximation. We show that even for sufficiently large arrays, up to 100×100 nanoparticles (NPs), electric or magnetic dipole CLRs may differ significantly from the ones calculated for infinite arrays with the same NP sizes and interparticle distances. The discrepancy is explained by the existence of a sufficiently strong cross-interaction between electric and magnetic dipoles induced at NPs in finite-sized lattices, which is ignored for infinite arrays. We support this claim numerically and propose an analytic model to estimate a spectral width of CLRs for finite-sized arrays. Given that most of the current theoretical and numerical researches on collective effects in arrays of
dielectric
NPs rely on modeling infinite structures, the reported findings may contribute to thoughtful and optimal design of inherently finite-sized photonic devices.
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Держатели документа:
Department of Theoretical Chemistry and Biology, School of Engineering Sciences in Chemistry, Biotechnology and Health, Royal Institute of Technology, Stockholm SE-10691, Sweden
Federal Siberian Research Clinical Centre under FMBA of Russia, Krasnoyarsk 660037, Russia
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk 660036, Russia
Institute of Computational Modeling SB RAS, Krasnoyarsk 660036, Russia
Siberian Federal University, Krasnoyarsk 660041, Russia
Siberian State University of Science and Technology, Krasnoyarsk 660014, Russia
The Institute of Optics, University of Rochester, Rochester, New York 14627, USA
Доп.точки доступа:
Zakomirnyi, V. I.; Закомирный, Вадим Игоревич; Ershov, A. E.; Ершов, Александр Евгеньевич; Gerasimov, V. S.; Герасимов, Валерий Сергеевич; Karpov, S. V.; Карпов, Сергей Васильевич; Ågren, H.; Rasskazov, I. L.
}
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16.
Features of the
Preparation and Study of Electrophysical Characteristics (BeO+TiO2)-Ceramics by Impedance Spectroscopy / A. A. Lepeshev [et al.]> // Refract. Ind. Ceram. - 2019. -
Vol. 60
,
Is. 3
. - P. 309-317,
DOI
10.1007/s11148-019-00359-1. - Cited References: 26 . - ISSN 1083-4877. - ISSN 1573-9139
Кл.слова (ненормированные):
(BeO + TiO2)-ceramic
--
electrophysical properties
--
impedance
--
frequency dependence
--
dielectric
permittivity
--
dielectric
loss tangent
Аннотация:
An electrically conducting two-component BeO-ceramic with the addition of micro- and nano-crystalline TiO2 powder is prepared that can be used as a material for scattered microwave radiation absorption in high-power electronic devices. The nature of the occurrence of electrical conductivity and absorption of the microwave field in (BeO + TiO2)-ceramics is not completely established. Impedance spectroscopy is used for the first time to investigate the electrical and
dielectric
characteristics of this ceramic in the frequency range from 100 Hz to 100 MHz in relation to presence of micro- and nano-sized TiO2 phase within the BeO ceramic composition. It is established that the static resistance of ceramics with addition of a TiO2 nanopowder is significantly reduced compared with the resistance of original ceramic with TiO2 micropowder. It is shown that real and imaginary components of the
dielectric
constant of the ceramic studied increase to abnormally large values with a reduction in frequency of the effective electric field, and in the high frequency range f ≥ 108 Hz the process of
dielectric
relaxation commences leading to an increase in
dielectric
loss angle.
Dielectric
properties of ceramic samples are determined under blocking conditions for through conduction. The effect of TiO2 micropowder additions on
dielectric
polarization processes with frequency increasing up to 12 × 109 Hz is considered.
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Публикация на русском языке
Особенности получения и исследование электрофизических характеристик (ВеО + TiO2)-керамики методом импедансной спектроскопии [Текст] / А. А. Лепешев [и др.] // Новые огнеупоры. - 2019. - № 6. - С. 55-63
Держатели документа:
FGBOU VO Siberian Federal University, Krasnoyarsk, Russia
FGBUN Federal Research Center, Krasnoyarsk Scientific Center, Siberian Section of the Russian Academy of Sciences, Krasnoyarsk, Russia
FGBOU VO Academician M. F. Reshetnev Siberian Aerospace University, Krasnoyarsk, Russia
FGAOU VO Ural Federal University, Ekaterinburg, Russia
Доп.точки доступа:
Lepeshev, A. A.; Pavlov, A. V.; Drokin, N. A.; Дрокин, Николай Александрович; Malkin, A. I.; Kiiko, V. S.; Knyazev, N. S.
}
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17.
Sorokin, A. V.
Forest
dielectric
characteristics for navigation satellites signals in L1 range / A. V. Sorokin, V. G. Podoprigora, E. Ponomarev> //
E3S Web of Conferences. - 2019. -
Vol. 75
. - Ст. 01011,
DOI
10.1051/e3sconf/20197501011. - Cited References: 9 . - ISBN 2267-1242
Аннотация:
A structural
dielectric
model of the forest is presented taking into account the wood Biomass distribution. The multi-scale structural formations of the individual trees and the stand as a whole as a hierarchical system of non-interacting components of the mixed
dielectric
are discussed. Layers of crowns and trunks are distinguished as anisotropic
dielectric
media with gradient boundaries. The possibility of using the orientation parameter of the order of branches in the crown layer to estimate the gradients of the effective permittivity of the inhomogeneous distribution and its spatial anisotropy is analyzed. A comparative analysis of the features of the effective
dielectric
permittivity of pine and birch forests is carried out. The possibilities of using a layered anisotropic
dielectric
forest model to describe the transformation of GPS and GLONASS signals in order to restore the biometric characteristics of the forest are considered.
РИНЦ
,
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Держатели документа:
Federal Research Center KSC SB RAS
Siberian Federal University
Reshetnev Siberian State Univ Sci & Technol,
Доп.точки доступа:
Podoprigora, V. G.; Подопригора, Владимир Георгиевич; Ponomarev, E. I.; Сорокин, Анатолий Васильевич; Региональные проблемы дистанционного зондирования Земли, международная конференция(5 ; 2018 ; сент. ; 11-14 ; Красноярск); Conference on regional problems of earth remote sensing(2018 ; Sept. ; 11-14 ; Krasnoyarsk); Сибирский федеральный университет
}
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18.
Bulgakov, E. N.
Interaction between
dielectric
particles enhances the Q factor. / E. N. Bulgakov, K. N. Pichugin, A. F. Sadreev> //
Journal of Physics: Conference Series. - 2020. -
Vol. 1461
,
Is. 1
. - Ст. 012144,
DOI
10.1088/1742-6596/1461/1/012144. - Cited References: 22. - This work was supported by Russian Science Foundation through Grant 19-02-00055. A. S. thanks A. Bogdanov for numerous and fruitful discussions
Кл.слова (ненормированные):
Anti-symmetric
--
Avoided crossings
--
Dielectric
particles
--
Identical particles
--
Individual particles
--
Quality factors
--
Strong enhancement
--
Two particles
--
Q factor measurement
Аннотация:
We consider resonant modes of two
dielectric
identical particles which can be classified as symmetric and anti symmetric combinations of the resonant modes of individual particles. We show that an approaching of two particles gives rise to an avoided crossing of resonant poles because of interaction between the disks. That in turn results in strong enhancement of the quality factor factor of two disks compared to isolated disks.
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Держатели документа:
Kirensky Institute of Physics, Federal Research Center, KSC SB RAS, Krasnoyarsk, 660036, Russian Federation
Доп.точки доступа:
Pichugin, K. N.; Пичугин, Константин Николаевич; Sadreev, A. F.; Садреев, Алмаз Фаттахович; Булгаков, Евгений Николаевич; International Conference on Metamaterials and Nanophotonics(4 ; 2019 ; 15 - 19 July ; St. Petersburg, Russian Federation)
}
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19.
Collective lattice resonances
in all-
dielectric
nanostructures under oblique incidence / A. D. Utyushev, V. I. Zakomirnyi, A. E. Ershov [et al.]> // Photonics. - 2020. -
Vol. 7
,
Is. 2
. - Ст. 24,
DOI
10.3390/PHOTONICS7020024. - Cited References: 70. - This research was funded by the RF Ministry of Science and Higher Education, the State contract with Siberian Federal University for scientific research and Russian Science Foundation project 19-72-00066 (investigation of finite size effects) . - ISSN 2304-6732
Кл.слова (ненормированные):
Collective lattice resonance
--
Nanoparticle
--
All-
dielectric
nanophotonics
--
Mie resonance
Аннотация:
Collective lattice resonances (CLRs) emerging under oblique incidence in 2D finite-size arrays of Si nanospheres have been studied with the coupled dipole model. We show that hybridization between the Mie resonances localized on a single nanoparticle and angle-dependent grating Wood-Rayleigh anomalies allows for the efficient tuning of CLRs across the visible spectrum. Complex nature of CLRs in arrays of
dielectric
particles with both electric dipole (ED) and magnetic dipole (MD) resonances paves a way for a selective and flexible tuning of either ED or MD CLR by an appropriate variation of the angle of incidence. The importance of the finite-size effects, which are especially pronounced for CLRs emerging for high diffraction orders under an oblique incidence has been also discussed.
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Держатели документа:
Department of Engineering Physics and Radioelectronics, Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Department of Space Materials and Technology, Siberian State University of Science and Technology, Krasnoyarsk, 660014, Russian Federation
Institute of Computational Modeling SB RAS, Krasnoyarsk, 660036, Russian Federation
L. V. Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation
The Institute of Optics, University of Rochester, Rochester, NY 14627, United States
Доп.точки доступа:
Utyushev, A. D.; Zakomirnyi, V. I.; Ershov, A. E.; Gerasimov, V. S.; Karpov, S. V.; Карпов, Сергей Васильевич; Rasskazov, I. L.
}
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20.
Mironov, V. L.
Spectroscopic Multirelaxation
Dielectric
Model of Thawed and Frozen Arctic Soils Considering the Dependence on Temperature and Organic Matter Content / V. L. Mironov, I. V. Savin> // Izv. Atmos. Ocean. Phys. - 2019. -
Vol. 55
,
Is. 9
. - P. 986-995,
DOI
10.1134/S0001433819090305. - Cited References: 16 . - ISSN 0001-4338. - ISSN 1555-628X
РУБ
Meteorology & Atmospheric Sciences + Oceanography
Рубрики:
SMOS BRIGHTNESS TEMPERATURES
RELAXATION
BOREAL
Кл.слова (ненормированные):
dielectric
model
--
moisture
--
temperature
--
organic soil
--
remote sensing
--
wet soil
Аннотация:
A temperature spectroscopic
dielectric
model of moist soils developed on the basis of measurements of six samples of thawed and frozen Arctic soils with different contents of organic matter, from 30 to 90%, is presented. This model allows predicting complex permittivity values of moist soil that are in a good agreement with
dielectric
measurements. It is applicable in a frequency range from 0.05 to 15 GHz, a temperature range from ‒30° to +25°C, and a moisture range from 0.009 to 1.001 g/g. It can be recommended for use in remote sensing algorithms of moisture and temperature of soil using space radiometric and radar data.
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Публикация на русском языке
Миронов, Валерий Леонидович. Спектроскопическая многорелаксационная диэлектрическая модель талых и мерзлых арктических почв, учитывающая зависимости от температуры и содержания органического вещества [Текст] / В. Л. Миронов, И. В. Савин // Исслед. Земли из космоса. - 2019. - № 1. - С. 62-73
Держатели документа:
Russian Acad Sci, Kirensky Inst Phys, Siberian Branch, Krasnoyarsk, Russia.
Доп.точки доступа:
Savin, I. V.; Савин, Игорь Викторович; Миронов, Валерий Леонидович
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