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Enhanced light absorption in Tamm metasurface with a bound state in the continuum / R. G. Bikbaev, D. N. Maksimov, P. S. Pankin [et al.] // Photonics Nanostruct. Fundam. Appl. - 2023. - Vol. 55. - Ст. 101148, DOI 10.1016/j.photonics.2023.101148. - Cited References: 47. - This research was funded by the Russian Science Foundation (project no. 22-42-08003). This work was supported by the Higher Education Sprout Project of the National Yang Ming Chiao Tung University and Ministry of Education and the National Science and Technology Council (NSTC 109-2628-E-007 -003 -MY3; 111-2923-E007 -008 -MY3; 111-2628-E-007-021) . - ISSN 1569-4410. - ISSN 1569-4429
Кл.слова (ненормированные):
Tamm plasmon polariton -- Bound state in the continuum -- Metasurface
Аннотация: We consider light absorption in a germanium grating placed on top of photonic-crystalline substrate. Such a system supports an optical Tamm state decoupled from the continuous spectrum with its frequency within the photonic band gap. We have demonstrated that application of the Tamm state makes in possible to engineer extremely narrow absorber which provides a 100 % absorption in a semiconductor grating in the critical coupling regime. The proposed design may be used at both normal and oblique incidence at the telecom wavelength.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, 660036, Krasnoyarsk, Russia
Siberian Federal University, Krasnoyarsk660041, Russia
College of Photonics, National Yang Ming Chiao Tung University, Tainan 711, Taiwan
Institute of Photonics Technologies, National Tsing Hua University, Hsinchu 300, Taiwan

Доп.точки доступа:
Bikbaev, R. G.; Бикбаев, Рашид Гельмединович; Maksimov, D. N.; Максимов, Дмитрий Николаевич; Pankin, P. S.; Панкин, Павел Сергеевич; Ye, Ming-Jyun; Chen, Kuo-Ping; Timofeev, I. V.; Тимофеев, Иван Владимирович
}
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Density-functional study of the Si/SiO2 interfaces in short-period superlattices: Vibrational states and Raman spectra / M. Smirnov, E. Roginskii, A. Savin [et al.] // Photonics. - 2023. - Vol. 10, Is. 8. - Ст. 902, DOI 10.3390/photonics10080902. - Cited References: 61. - The study was supported by grants from the Russian Science Foundation (project No. 22-22-20021) and the Saint-Petersburg Science Center (project No. 32/2022), using the resources of the Computing Center and the Center for Optical and Laser Materials Research at the Research Park of St. Petersburg State University. - The study was performed using the resources of the Computing Center and the Center for Optical and Laser Materials Research at the Research Park of St. Petersburg State University. The authors thank Konstantin Smirnov for his valuable advice. The calculations were also performed in part using the facilities of the JSCC supercomputer center at RAS and the Konstantinov computational center at the Ioffe Institute . - ISSN 2304-6732
Кл.слова (ненормированные):
silicon -- cristobalite -- interface -- superlattice -- Raman spectra -- DFT modelling
Аннотация: Raman spectroscopy has proven its effectiveness as a highly informative and sensitive method for the nondestructive analysis of layered nanostructures and their interfaces. However, there is a lack of information concerning the characteristic phonon modes and their activity in Si/SiO2 nanostructures. In order to overcome this problem, the phonon states and Raman spectra of several Si/SiO2 superlattices (SL) with layer thicknesses varied within 0.5–2 nm are studied using DFT-based computer modeling. Two types of structures with different interfaces between crystalline silicon and SiO2 cristobalite were studied. A relationship between the phonon states of heterosystems and the phonon modes of the initial crystals was established. Estimates of the parameters of deformation potentials are obtained, with the help of which the shifts of phonon frequencies caused by elastic strains in the materials of the SL layers are interpreted. The dependence of intense Raman lines on the SL structure has been studied. Several ways have been proposed to use this information, both for identifying the type of interface and for estimating the structural parameters. The obtained information will be useful for the spectroscopic characterization of the silicon/oxide interfaces.

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Держатели документа:
Faculty of Physics, Saint-Petersburg State University, Universitetskaya nab. 7/9, Saint-Petersburg 199034, Russia
Laboratory of Spectroscopy of Solid State, Ioffe Institute, Politehnicheskaya St. 26, Saint-Petersburg 194021, Russia
Laboratory of Molecular Spectroscopy, Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Akademgorodok St. 50/38, Krasnoyarsk 660036, Russia
School of Engineering and Construction, Siberian Federal University, Svobodny pr. 82, Krasnoyarsk 660041, Russia
Center for Optical and Laser Materials Research, Research Park, Saint-Petersburg State University, Universitetskaya nab. 7/9, Saint-Petersburg 199034, Russia

Доп.точки доступа:
Smirnov, Mikhail; Roginskii, Evgenii; Savin, Aleksandr; Oreshonkov, A. S.; Орешонков, Александр Сергеевич; Pankin, Dmitrii
}
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Near-field evolution of optical vortices and their spatial ordering behind a fork-shaped grating / D. A. Ikonnikov, S. A. Myslivets, V. G. Arkhipkin, A. M. Vyunishev // Photonics. - 2023. - Vol. 10, Is. 4. - Ст. 469, DOI 10.3390/photonics10040469. - Cited References: 32. - The work is supported by the Russian Science Foundation (grant No. 19-12-00203) . - ISSN 2304-6732
Кл.слова (ненормированные):
fork-shaped grating -- optical vortex -- optical singularity -- near-field diffraction
Аннотация: Fork-shaped gratings are periodic structures containing a spatial dislocation known to be used for the production of optical vortices in a far field. Spatial overlapping of diffraction orders in a near field results in complex spatial evolution of optical vortices. In this paper, we report the results of near-field diffraction on fork-shaped gratings with different topological charges and analyze the evolution of specific optical vortices during propagation. Optical vortices have been shown to form two-dimensional well-ordered spatial configurations in specific transverse planes. The locus of points of optical singularities has been shown to form two helical lines twisted around the ±1 diffraction order directions. Our results demonstrate that the spatial behaviour of optical vortices is in close connection with the spatial ordering arising from the Talbot effect. The quantity of optical vortices demonstrates complex spatial dynamics, which includes spatial oscillations and decreasing along the propagation direction. These results provide a foundation towards a deeper understanding of near-field singular optics phenomena.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, 660036 Krasnoyarsk, Russia
Department of Photonics and Laser Technology, Siberian Federal University, 660079 Krasnoyarsk, Russia

Доп.точки доступа:
Ikonnikov, Denis A.; Иконников, Денис Андреевич; Myslivets, S. A.; Мысливец, Сергей Александрович; Arkhipkin, V. G.; Архипкин, Василий Григорьевич; Vyunishev, A. M.; Вьюнышев, Андрей Михайлович
}
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    Polarization-sensitive resonant absorber based on splitted tamm plasmon polariton / A. Y. Avdeeva, R. G. Bikbaev, S. Y. Vetrov [et al.] // Photonics Nanostruc. Fundam. Appl. - 2023. - Vol. 53, Is. 16. - Ст. 101094, DOI 10.1016/j.photonics.2022.101094. - Cited References: 55 . - ISSN 1569-4410. - ISSN 1569-4429
   Перевод заглавия: Поляризационно-чувствительный резонансный поглотитель на основе расщепления таммовского плазмон-поляритона
Кл.слова (ненормированные):
Absorber -- Polarization -- Localization of light -- Tamm plasmon polariton -- Anisotropic nanocomposite -- Plasmonic sensor
Аннотация: The possibility of creating a polarization-sensitive absorber on the basis of the splitting of a Tamm plasmon polariton at the interface between a metallic film and an anisotropic nanocomposite layer conjugated with a photonic crystal is theoretically predicted. The effect of geometrical parameters on the optical absorption spectra under the critical coupling conditions is discussed. It is shown that, changing the polarization of the radiation falling onto the structure along its normal, one can control the absorption at the Tamm plasmon polariton wavelength.

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Держатели документа:
Kirensky Institute of Physics, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation

Доп.точки доступа:
Avdeeva, A. Yu.; Авдеева, Анастасия Юрьевна; Bikbaev, R. G.; Бикбаев, Рашид Гельмединович; Vetrov, S. Ya.; Ветров, Степан Яковлевич; Doyko, R. K.; Timofeev, I. V.; Тимофеев, Иван Владимирович
}
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Tamm plasmons in TiO2 nanotube photonic crystals / M. V. Pyatnov, R. G. Bikbaev, I. V. Timofeev [et al.] // Photonics. - 2023. - Vol. 10, Is. 1. - Ст. 64, DOI 10.3390/photonics10010064. - Cited References: 40. - This research was funded by Russian Science Foundation and Krasnoyarsk Regional Fund of Science, project № 22-22-20078, https://rscf.ru/project/22-22-20078/ (accessed on 01 January 2023) . - ISSN 2304-6732
Кл.слова (ненормированные):
photonic crystals -- titanium dioxide -- absorbers -- anodization
Аннотация: The anodic TiO2 photonic crystals evoke great interest for application as photocatalytic media due to high absorption of light resuling from their specific structure. In this work, the optical properties of the photonic crystal based on a bamboo-type TiO2 nanotube with a metallic coating are analyzed theoretically by the finite-difference time-domain method. The occurrence of Tamm plasmons that appears as a peak in the absorption spectrum is predicted. A Tamm plasmon polariton is a localized state of light excited at the boundary of two highly reflective media, a metal and a Bragg reflector. The integral absorption of the gold-, titanium-, and titanium nitride-coated photonic crystals in the wavelength range of 450–600 nm is calculated. It is established that the titanium nitride-coated structure exhibits the maximum integral absorption.

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Держатели документа:
Kirensky Institute of Physics, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, 660036 Krasnoyarsk, Russia
Siberian Federal University, 660041 Krasnoyarsk, Russia
Institute of Computational Modelling, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, 660036 Krasnoyarsk, Russia

Доп.точки доступа:
Pyatnov, M. V.; Пятнов, Максим Владимирович; Bikbaev, R. G.; Бикбаев, Рашид Гельмединович; Timofeev, I. V.; Тимофеев, Иван Владимирович; Ryzhkov, Ilya I.; Vetrov, S. Ya.; Ветров, Степан Яковлевич; Shabanov, V. F.; Шабанов, Василий Филиппович
}
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Pichugin, K. N.
A series of avoided crossings of resonances in the system of several different dielectric resonators results in giant Q-factors / K. Pichugin, A. Sadreev, E. Bulgakov // Photonics. - 2023. - Vol. 10, Is. 9. - Ст. 973, DOI 10.3390/photonics10090973. - Cited References: 64. - This work is supported by the Russian Science Foundation under grant 22-12-00070 . - ISSN 2304-6732
Кл.слова (ненормированные):
resonant modes -- avoided crossing -- high Q-factor
Аннотация: On an example of a system of three/four/five/six different coupled coaxial silicon disks, we realize a series of avoided crossings of resonances (ACRs) with respect to the different morphologies for the different scales of each disk. Each next step of ACR accompanied by the optimization processes of all previous ACRs contributes almost one order of magnitude to the Q-factor. As a result, we achieve unprecedented values for the Q-factors: 6.6·104 for three, 4.8·106 for four, 8.5·107 for five and several billions for six free standing silicon disks. Comparisons to such prominent methods as whispering gallery modes or quasi bound states in the continuum to boost the Q-factor demonstrate the tremendous advantage of the present approach not only in terms of Q-factor values but also in terms of mode volumes. Multipole analysis of the final hybridized resonant mode explains such extremely large Q-factor values. The analysis shows a strong redistribution of radiation owing to the almost-exact destructive interference of the dominating complex multipole radiation amplitudes.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, 660036 Krasnoyarsk, Russia

Доп.точки доступа:
Sadreev, A. F.; Садреев, Алмаз Фаттахович; Bulgakov, E. N.; Булгаков, Евгений Николаевич; Пичугин, Константин Николаевич
}
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    Tuning Q-factor and perfect absorption using coupled Tamm states on polarization-preserving metasurface / N. V. Rudakova, R. G. Bikbaev, L. E. Tyryshkina [et al.] // Photonics. - 2023. - Vol. 10, Is. 12. - Ст. 1391, DOI 10.3390/photonics10121391. - Cited References: 58 . - ISSN 2304-6732
   Перевод заглавия: Управление добротностью и идеальным поглощением с помощью связанных оптических таммовских состояний на сохраняющей поляризацию метаповерхности
Кл.слова (ненормированные):
bound state in the continuum -- optical Tamm state -- coupled modes -- cholesteric liquid crystal -- polarization-preserving metasurface
Аннотация: The circular polarization of light flips its handedness after a conventional metallic mirror reflection. Therefore, a polarization-preserving metasurface is a crucially important element in a series of chiral photonic structures. They include tunable cholesteric LCs and anisotropic photonic crystals. Chiral structures are rich in interfacial localized modes including Tamm states. In this report, coupled modes formed as a result of the interaction between two chiral optical Tamm states or a chiral optical Tamm state and a chiral Tamm plasmon polariton are analytically and numerically investigated. It is shown that the effective control of coupled modes can be carried out by changing the pitch of the cholesteric and the angle between the optical axis of the cholesteric and the polarization-preserving anisotropic mirror. The influence of the metasurface period on the spectral characteristics of coupled modes is investigated. The possibility of realizing a bound state in the continuum of the Friedrich–Wintgen type, resulting from the destructive interference of coupled modes, which leads to the collapse of the resonance line corresponding to the chiral optical Tamm state, has been demonstrated.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk 660036, Russia
Siberian Federal University, Krasnoyarsk 660041, Russia

Доп.точки доступа:
Rudakova, N. V.; Рудакова, Наталья Викторовна; Bikbaev, R. G.; Бикбаев, Рашид Гельмединович; Tyryshkina, L. E.; Тырышкина, Лариса Е.; Vetrov, S. Ya.; Ветров, Степан Яковлевич; Timofeev, I. V.; Тимофеев, Иван Владимирович
}
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    Вьюнышев, Андрей Михайлович.
    Пространственный контроль и структурирование света в нелинейной фотонике / А. М. Вьюнышев, В. Г. Архипкин, А. С. Чиркин // HOLOEXPO 2023: 20-я Mеждународная конференция по голографии и оптическим технологиям : тезисы докладов. - СПб. : Изд-во СПбГЭТУ «ЛЭТИ», 2023. - С. 113-114. - Библиогр.: 2. - РНФ № 19-12-00203 . - ISBN 978-5-7629-3209-7
   Перевод заглавия: Spatial control and structuring light in nonlinear photonics
Аннотация: Развита теория генерации второй гармоники фемтосекундных лазерных импульсов в 3D периодических нелинейных фотонных кристаллах. Получено выражение для спектральной интенсивности второй гармоники для спектрально-ограниченных и чирпированных фемтосекундных лазерных импульсов. Показана возможность нелинейного мультиплексирования генерируемого излучения и формирования дискретного углового спектра генерируемого излучения. Продемонстрирована роль дисперсии групповых скоростей в формировании частотно-углового спектра генерируемого излучения.
The theory of second harmonic generation of femtosecond laser pulses in three-dimensional periodic nonlinear photonic crystals is developed. The expression for spectral intensity of the second harmonic for transform-limited and chirped femtosecond laser pulses is obtained. Possibility of nonlinear multiplexing and discrete angular spectrum formation has been demonstrated. The role of group velocity mismatch in formation of frequency-angular spectra of generated radiation is shown.

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Держатели документа:
Институт физики им Л. В. Киренского СО РАН
Московский государственный университет имени М. В. Ломоносова

Доп.точки доступа:
Архипкин, Василий Григорьевич; Arkhipkin, V. G.; Чиркин, А. С.; Chirkin A. S.; Vyunishev, A. M.; Mеждународная конференция по голографии и оптическим технологиям(20 ; 2023 ; 12-15 сент. ; Сочи)
}
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Bukhanov, E. R.
Photonics of plant chloroplasts / E. R. Bukhanov, M. N. Volochaev, S. A. Pyatina // Bull. Russ. Acad. Sci. Phys. - 2023. - Vol. 87, Is. 10. - P. 1488-1492, DOI 10.3103/S1062873823703549. - Cited References: 19 . - ISSN 1062-8738. - ISSN 1934-9432
Аннотация: It is shown that features of light propagation in plant leaves depend on the long-range ordering in chloroplasts and spectral characteristics of pigments. It is established that, allowing for the dispersion of chlorophyll’s absorption spectrum, the photonic density of states grows and the spectral peak shifts to the efficient photosynthesis wavelength range, enhancing the probability of photosynthesis.

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Публикация на русском языке Буханов, Евгений Романович. Фотоника хлоропластов растений [Текст] / Е. Р. Буханов, М. Н. Волочаев, С. А. Пятина. - 5 с. // Изв. РАН. Сер. физич. - 2023. - Т. 87 № 10. - С. 1458-1462

Держатели документа:
Kirensky Institute of Physics, Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation
Krasnoyarsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Volochaev, M. N.; Волочаев, Михаил Николаевич; Pyatina, S. A.; Буханов, Евгений Романович
}
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10.

    Anomalous spectral shift of o-modes in multilayer photonic structure induced by homeotropic–homeoplanar transition in chiral–nematic defect layer / V. A. Gunyakov, V. S. Sutormin, I. V. Timofeev [et al.] // Photonics. - 2023. - Vol. 10, Is. 9. - Ст. 959, DOI 10.3390/photonics10090959. - Cited References: 39 . - ISSN 2304-6732
   Перевод заглавия: Аномальный спектральный сдвиг о-мод в мультислойной фотонной структуре индуцированный переходом от гомеотропной к гомеопланарной конфигурации в хиральном нематическом дефектном слое
Кл.слова (ненормированные):
liquid crystal -- hybrid aligned cholesteric -- ionic surfactant -- multilayer photonic structure -- geometric phase
Аннотация: A chiral nematic is embedded between multilayer mirrors to obtain voltage-inducible polarized resonance spectra. Initially, the nematic director is uniformly oriented perpendicular to the mirrors’ surfaces because the chiral nematic helix is completely untwisted due to the homeotropic boundary conditions specified by the adsorbed cations. Then, a voltage is applied to remove the layer of surface-active cations from the input mirror. The obtained twisted homeoplanar configuration has a helix pitch exceeding the layer’s thickness. The twisting leads to the anomalous blue shift of the o-modes in the transmittance spectrum of the photonic structure. This blue shift can be effectively compensated by repulsion of spectral peaks as a result of mode coupling in the vicinity of the virtual avoided crossing point. The experimental results obtained are confirmed numerically using the 4 ˣ 4 transfer matrix method and explained with the contribution of a geometric phase.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation
Institute of Engineering Physics and Radio Electronics, Siberian Federal University, Krasnoyarsk, 660041, Russian Federation

Доп.точки доступа:
Gunyakov, V. A.; Гуняков, Владимир Алексеевич; Sutormin, V. S.; Сутормин, Виталий Сергеевич; Timofeev, I. V.; Тимофеев, Иван Владимирович; Shabanov, V. F.; Шабанов, Василий Филиппович; Zyryanov, V. Ya.; Зырянов, Виктор Яковлевич
}
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11.

Two-dimensional dynamic beam steering by Tamm plasmon polariton / R. G. Bikbaev, K.-P. Chen, I. V. Timofeev // Photonics. - 2023. - Vol. 10, Is. 10. - Ст. 1151, DOI 10.3390/photonics10101151. - Cited References: 54. - This research was funded by the Russian Science Foundation (project no. 22-42-08003). This work was supported by the National Science and Technology Council (NSTC 112-2223-E-007-007-MY3; 111-2923-E-007 -008 -MY3; 111-2628-E-007-021 . - ISSN 2304-6732
Кл.слова (ненормированные):
Tamm plasmon polariton -- metasurface -- beam steering
Аннотация: The dynamic steering of a beam reflected from a photonic structure supporting Tamm plasmon polariton is demonstrated. The phase and amplitude of the reflected wave are adjusted by modulating the refractive index of a transparent conductive oxide layer by applying a bias voltage. It is shown that the proposed design allows for two-dimensional beam steering by deflecting the light beam along the polar and azimuthal angles.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center, Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences, 660036 Krasnoyarsk, Russia
Siberian Federal University, 660041 Krasnoyarsk, Russia
College of Photonics, National Yang Ming Chiao Tung University, Tainan 711, Taiwan
Institute of Photonics Technologies, National Tsing Hua University, Hsinchu 300, Taiwan

Доп.точки доступа:
Bikbaev, R. G.; Бикбаев, Рашид Гельмединович; Chen, Kuo-Ping; Timofeev, I. V.; Тимофеев, Иван Владимирович
}
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12.

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.

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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
}
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13.

Crystal structure of bismuth-containing NdFe3(BO3)4 in the temperature range 20–500 K / E. S. Smirnova, O. A. Alekseeva, A. P. Dudka [et al.] // Acta Crystallogr. B. - 2022. - Vol. 78, Pt. 1. - P. 1-13, DOI 10.1107/S205252062101180X. - Cited References: 44. - This work was performed using the equipment of the Shared Research Center FSRC `Crystallography and Photonics' RAS supported by the Russian Ministry of Science and Higher Education. This work was supported by the Ministry of Science and Higher Education within the State assignment FSRC `Crystallography and Photonics' RAS . - ISSN 2052-5206

РУБ Chemistry, Multidisciplinary + Crystallography
Рубрики:
MAGNETIC PHASE-TRANSITIONS
UNIT-CELL PARAMETERS
DIFFRACTION
Кл.слова (ненормированные):
neodymium iron borate -- multiferroic -- crystal structure -- multi-temperature -- single-crystal X-ray diffraction -- Mossbauer spectroscopy -- characteristic temperature
Аннотация: Neodymium iron borate NdFe3(BO3)4 is an intensively studied multiferroic with high electric polarization values controlled by a magnetic field. It is characterized by a large quadratic magnetoelectric effect, rigidity in the base plane and a rather strong piezoelectric effect. In this work, the atomic structure of (Nd0.91Bi0.09)Fe3(BO3)4 was studied by single-crystal X-ray diffraction in the temperature range 20–500 K (space group R32, Z = 3). The Bi atoms found in the composition partially substitute the Nd atoms in the 3a position; they entered the structure due to the growth conditions in the presence of Bi2Mo3O12. It was shown that in the temperature range 20–500 K there is no structural phase transition R32→P3121, which occurs in rare-earth iron borates (RE = Eu–Er, Y) with an effective rare-earth cation radius smaller than that of Nd. The temperature dependence of the unit-cell c parameter reveals a slight increase on cooling below 90 K, which is similar to the results obtained previously for iron borates of Gd, Y and Ho. The atomic distances (Nd,Bi)—O, (Nd,Bi)—B, (Nd,Bi)—Fe, Fe—O, Fe—B and Fe—Fe in the iron chains and between chains decrease steadily with decreasing temperature from 500 to 90 K, whereas the B1(3b)—O distance does not change and the average B2(9e)—O distance increases slightly. There is a uniform decrease in the atomic displacement parameters with decreasing temperature, with a more pronounced decrease for the Nd(3a) and O2(9e) atoms. The O2(9e) atoms are characterized by the maximum atomic displacement parameters and the most elongated atomic displacement ellipsoids. The characteristic Debye and Einstein temperatures, and the static component in the atomic displacements were determined for cations using multi-temperature diffraction data. It was shown that the Nd cations have the weakest bonds with the surrounding atoms and the B cations have the strongest.

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Держатели документа:
Russian Acad Sci, Fed Sci Res Ctr Crystallog & Photon, Shubnikov Inst Crystallog, Moscow 119333, Russia.
Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Smirnova, E. S.; Alekseeva, O. A.; Dudka, A. P.; Verin, I. A.; Artemov, V. V.; Lyubutina, M. V.; Gudim, I. A.; Гудим, Ирина Анатольевна; Frolov, K. V.; Lyubutin, I. S.; Russian Ministry of Science and Higher Education; Ministry of Science and Higher Education within the State assignment FSRC 'Crystallography and Photonics' RAS
}
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14.

    Пятнов, Максим Владимирович.
    Фотоэлектрохимическое расщепление воды наноструктурированным электродом и зеленая водородная энергетика / М. В. Пятнов, И. В. Тимофеев // Фотоника. - 2022. - Т. 16, Вып. 2. - С. 116-125 ; Photonics Rus., DOI 10.22184/1993-7296.FRos.2022.16.2.116.125. - Библиогр.: 28. - Исследование выполнено за счет гранта Российского научного фонда и Красноярского краевого фонда поддержки научной и научно-технической деятельности № 22-22-20078, https://rscf.ru/project/22-22-20078 . - ISSN 1993-7296. - ISSN 2686-844X
   Перевод заглавия: Photoelectrochemical water splitting by a nanostructured electrode and green hydrogen energy
Кл.слова (ненормированные):
плазмонный катализ -- расщепление воды -- фототок -- эффективность преобразования света в водород -- plasmonic catalysis -- water splitting -- photo-induced current -- light-to-hydrogen conversion efficiency
Аннотация: В статье описан перспективный способ получения водорода – фотоэлектрохимическое расщепление воды. Этот подход сочетает непосредственное использование солнечной энергии и низкую стоимость производства фотоэлектрохимических ячеек из широко распространенных на Земле полупроводниковых материалов. Последние достижения в конструировании таких ячеек включают наноструктурирование полупроводниковых электродов плазмонными материалами.
This article describes a promising hydrogen formation method, namely the photoelectrochemical water splitting. This approach combines the direct use of solar energy and low production cost of photoelectrochemical cells using the widely used semiconductor materials. The latest advances in such cell design include nanostructuring of the semiconductor electrodes with plasmonic materials.

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РИНЦ
Держатели документа:
Институт физики им. Л. В. Киренского СО РАН -обособленное подразделение ФИЦ КНЦ СО РАН
Сибирский федеральный университет

Доп.точки доступа:
Тимофеев, Иван Владимирович; Timofeev, I. V.; Pyatnov, M. V.

}
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15.

    Influence of growth environment on structural and optical characteristics of barley / E. R. Bukhanov, V. N. Shikhov, A. G. Lipshin [et al.] // IV International conference on photonics research (Interphotonics 2022) : book of abstracts / International conference on photonics research (4 ; 2022 ; Apr. 22-28 ; Oludeniz, Turkey). - 2022. - Ст. Id-611. - P. 13
   Перевод заглавия: Влияние среды роста на структурные и оптические характеристики ячменя

Материалы конференции
Держатели документа:
Kirensky Institute of Physics FRC «KSC of SB RAS», Krasnoyarsk, Russian Federation
Federal Research Center «KSC of SB RAS», Krasnoyarsk, Russian Federation
Institute of Biophysics FRC «KSC of SB RAS», Krasnoyarsk, Russian Federation
Krasnoyarsk Research Institute of Agriculture FRC «KSC of SB RAS», Krasnoyarsk, Russian Federation

Доп.точки доступа:
Bukhanov, E. R.; Буханов, Евгений Романович; Shikhov, V. N.; Шихов, В. Н.; Lipshin, A. G.; Velichko, V. V.; Surin, N. A.; International conference on photonics research(4 ; 2022 ; Apr. 22-28 ; Oludeniz, Turkey)
}
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16.

    All-dielectric photonic crystal microcavity with electrically tunable Q-factor / A. I. Krasnov, P. S. Pankin, D. S. Buzin [et al.] // 9th International School and Conference on Optoelectronics, Photonics, Engineering and Nanostructures : book of abstracts. - Saint-Petersburg, 2022. - Cited References: 3
   Перевод заглавия: Полностью диэлектрический фотоннокристаллический микрорезонатор с электрически управляемой добротностью

Держатели документа:
Kirensky Institute of Physics, Krasnoyarsk 660036, Russia
Siberian Federal University, Krasnoyarsk 660041, Russia
Siberian State University of Science and Technology, Krasnoyarsk 660037, Russia
AO NPP Radiosvyaz, 660021 Krasnoyarsk, Russia

Доп.точки доступа:
Krasnov, A. I.; Pankin, P. S.; Панкин, Павел Сергеевич; Buzin, D. S.; Romanenko, G. A.; Sutormin, V. S.; Сутормин, Виталий Сергеевич; Nabol, S. V.; Zelenov, F. V.; Masyugin, A. N.; Ветров, Степан Яковлевич; Vetrov, S. Ya.; Timofeev, I. V.; Тимофеев, Иван Владимирович; International School and Conference on optoelectronics, photonics, engineering and nanostructures(9 ; 2022 ; 24-27 May ; Saint Petersburg); Высшая школа экономики, НИУ; Санкт-Петербургский национальный исследовательский Академический университет имени Ж.И. Алфёрова Российской академии наук
}
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17.

    Fabry-Perot type bound state in the continuum in an anisotropic photonic crystal / S. V. Nabol, P. S. Pankin, D. N. Maximov, I. V. Timofeev // 9th International School and Conference on Optoelectronics, Photonics, Engineering and Nanostructures : book of abstracts. - Saint-Petersburg, 2022
   Перевод заглавия: Связанное состояние в континууме Фабри-Перо в анизотропном фотонном кристалле

Держатели документа:
Kirensky Institute of Physics, Krasnoyarsk 660036, Russia
Siberian Federal University, Krasnoyarsk 660041, Russia

Доп.точки доступа:
Nabol, S. V.; Pankin, P. S.; Панкин, Павел Сергеевич; Maximov, D. N.; Timofeev, I. V.; Тимофеев, Иван Владимирович; International School and Conference on optoelectronics, photonics, engineering and nanostructures(9 ; 2022 ; 24-27 May ; Saint Petersburg); Высшая школа экономики, НИУ; Санкт-Петербургский национальный исследовательский Академический университет имени Ж.И. Алфёрова Российской академии наук
}
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18.

    Metal-dielectric optical microcavity with tunable Q-factor / G. A. Romanenko, P. S. Pankin, D. S. Buzin [et al.] // 9th International School and Conference on Optoelectronics, Photonics, Engineering and Nanostructures : book of abstracts. - Saint-Petersburg, 2022. - Cited References: 3. - This research was funded by the Russian Science Foundation (project no. 22-42-08003)
   Перевод заглавия: Металл-диэлектрический оптический микрорезонатор с управляемой добротностью
Аннотация: The article shows numerical calculation of the spectra for a metal-dielectric microcavity. The microcavity consists of a photonic crystal mirror, metallic mirror and a liquid crystal layer between them. It is shown that the system supports both symmetry-protected and Friedrich-Wintgen types of bound states in the continuum. The quality factor and position of resonant modes are effectively controlled by changing the system parameters or applying an external electric field to the liquid crystal layer.

Материалы конференции
Держатели документа:
Kirensky Institute of Physics, Krasnoyarsk 660036, Russia
Siberian Federal University, Krasnoyarsk 660041, Russia
Siberian State University of Science and Technology, Krasnoyarsk 660037, Russia
AO NPP Radiosvyaz, 660021 Krasnoyarsk, Russia

Доп.точки доступа:
Romanenko, G. A.; Pankin, P. S.; Панкин, Павел Сергеевич; Buzin, D. S.; Krasnov, A. I.; Sutormin, V. S.; Сутормин, Виталий Сергеевич; Nabol, S. V.; Tambasov, I. A.; Тамбасов, Игорь Анатольевич; Zelenov, F. V.; Masyugin, A. N.; Timofeev, I. V.; Тимофеев, Иван Владимирович; International School and Conference on optoelectronics, photonics, engineering and nanostructures(9 ; 2022 ; 24-27 May ; Saint Petersburg); Высшая школа экономики, НИУ; Санкт-Петербургский национальный исследовательский Академический университет имени Ж.И. Алфёрова Российской академии наук
}
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19.

    Hybrid Tamm-microcavity optical modes with tunable Q-factor / G. A. Romanenko, P. S. Pankin, D. S. Buzin [et al.] // 9th International School and Conference on Optoelectronics, Photonics, Engineering and Nanostructures : book of abstracts. - Saint-Petersburg, 2022. - Cited References: 3
   Перевод заглавия: Гибридные таммовские-микрорезонаторные оптические моды с управляемой добротностью

Держатели документа:
Kirensky Institute of Physics, Krasnoyarsk 660036, Russia
Siberian Federal University, Krasnoyarsk 660041, Russia
Siberian State University of Science and Technology, Krasnoyarsk 660037, Russia
AO NPP Radiosvyaz, 660021 Krasnoyarsk, Russia

Доп.точки доступа:
Buzin, D. S.; Pankin, P. S.; Панкин, Павел Сергеевич; Romanenko, G. A.; Krasnov, A. I.; Sutormin, V. S.; Сутормин, Виталий Сергеевич; Nabol, S. V.; Tambasov, I. A.; Тамбасов, Игорь Анатольевич; Zelenov, F. V.; Masyugin, A. N.; Ветров, Степан Яковлевич; Vetrov, S. Ya.; Timofeev, I. V.; Тимофеев, Иван Владимирович; International School and Conference on optoelectronics, photonics, engineering and nanostructures(9 ; 2022 ; 24-27 May ; Saint Petersburg); Высшая школа экономики, НИУ; Санкт-Петербургский национальный исследовательский Академический университет имени Ж.И. Алфёрова Российской академии наук
}
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20.

    Multipolar lattice resonances in plasmonic finite-size metasurfaces / A. S. Kostyukov, I. L. Rasskazov, V. S. Gerasimov [et al.] // Photonics. - 2021. - Vol. 8, Is. 4. - Ст. 109, DOI 10.3390/photonics8040109. - Cited References: 66. - The reported study was funded by the Russian Science Foundation project number 19-72-00066 . - ISSN 2304-6732
   Перевод заглавия: Мультипольные решеточные резонансы в плазмонных метаповерхностях конечных размеров

РУБ Optics

Кл.слова (ненормированные):
lattice resonance -- plasmonics -- multipoles -- nanoparticle
Аннотация: Collective lattice resonances in regular arrays of plasmonic nanoparticles have attracted much attention due to a large number of applications in optics and photonics. Most of the research in this field is concentrated on the electric dipolar lattice resonances, leaving higher-order multipolar lattice resonances in plasmonic nanostructures relatively unexplored. Just a few works report exceptionally high-Q multipolar lattice resonances in plasmonic arrays, but only with infinite extent (i.e., perfectly periodic). In this work, we comprehensively study multipolar collective lattice resonances both in finite and in infinite arrays of Au and Al plasmonic nanoparticles using a rigorous theoretical treatment. It is shown that multipolar lattice resonances in the relatively large (up to 6400 nanoparticles) finite arrays exhibit broader full width at half maximum (FWHM) compared to similar resonances in the infinite arrays. We argue that our results are of particular importance for the practical implementation of multipolar lattice resonances in different photonics applications.

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Держатели документа:
Siberian Fed Univ, Int Res Ctr Spect & Quantum Chem IRC SQC, Krasnoyarsk 660041, Russia.
Univ Rochester, Inst Opt, Rochester, NY 14627 USA.
Russian Acad Sci, Siberian Branch, Inst Computat Modelling, Krasnoyarsk 660036, Russia.
Fed Res Ctr KSC SB RAS, LV Kirensky Inst Phys, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Kostyukov, Artem S.; Rasskazov, Ilia L.; Gerasimov, Valeriy S.; Polyutov, Sergey P.; Karpov, S. V.; Карпов, Сергей Васильевич; Ershov, Alexander E.; Russian Science FoundationRussian Science Foundation (RSF) [19-72-00066]
}
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