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    Аверьянов, Евгений Михайлович.
    Изменения температуры фазового перехода нематик – изотропная жидкость в гомологических рядах каламитных жидких кристаллов и конформационная подвижность концевых молекулярных цепей / Е. М. Аверьянов // Жидк. крист. и их практич. использ. - 2018. - Т. 18, № 1. - С. 37-46 ; Liq. Cryst. Appl., DOI 10.18083/LCAppl.2018.1.37. - Библиогр.: 16. - Данная работа выполнена в рамках проекта 0356-2015-0411 Комплексной программы Сибирского отделения РАН № II.2П. . - ISSN 1991-3966. - ISSN 2499-–964
   Перевод заглавия: Changes of the nematic–isotropic liquid phase transition temperature in homologous series of calamitic liquid crystals and conformational mobility of terminal molecular chains
Кл.слова (ненормированные):
фазовый переход нематик – изотропная жидкость -- гомологические ряды жидких кристаллов -- конформационная подвижность молекулярных цепей -- nematic – isotropic liquid phase transition -- homologous series of liquid crystals -- conformational mobility of molecular chains
Аннотация: Для каламитных нематиков (холестериков) различных химических классов показано, что монотонно возрастающие зависимости tс(np) температуры перехода нематик – изотропная жидкость от номера np четных (ne) или нечетных (no) гомологов хорошо аппроксимируются функциями Fp(n) = tlp + Dpexp(–λpn). Две ветви tс(no) и tс(ne) описываются одной функцией F(n) = Fs(n) + Fa(n) с гладкой частью Fs(n) = [Fe(n) + Fo(n)]/2 и альтернацией Fa(n) =(–1)n[Fe(n) – Fo(n)]/2. Выведена зависимость Fs(n) = tl + Dexp(–λn), где коэффициент λ = –ln(q) определяется отношением q = Sk/Sk–1 (k ≥ 2) параметров ориентационного порядка Sk = S1exp[–(k–1)/ζ] для метиленовых фрагментов алифатических цепей молекул в нематической фазе. Значения λ и ζ = 1/λ связаны выражением q = [4–exp(–ε)]/[4+8exp(–ε)] с эффективной разностью энергий ε = Egt/RT для гош(g±)- и транс(t)-ориентаций k–го фрагмента цепи относительно (k–1)-го. Прослежена связь величин λp, ζp, λ, ζ, q, ε и функции Fa(n) с химической структурой молекул.
For calamitic nematics (cholecterics) of various chemical classes it was shown that monotonous increasing dependences tс(np) of the nematic – isotropic liquid transition temperature on the number np of even (ne) or odd (no) homologues are well approximated by functions Fp(n) = tlp + Dpexp(–λpn). Two branches tс(no) and tс(ne) are described by one function F(n) = Fs(n) + Fa(n) with smooth part Fs(n) = [Fe(n) + Fo(n)]/2 and alternating part Fa(n) =(–1)n[Fe(n) – Fo(n)]/2. The dependence Fs(n) = tl + Dexp(–λn) was derived, in which coefficient λ = –ln(q) is determined by the ratio q = Sk/Sk–1 (k ≥ 2) of the orientational order parameters Sk = S1exp[–(k–1)/ζ] for methylene fragments of aliphatic molecular chains in the nematic phase. The values of λ and ζ = 1/λ are related by the expression q = [4–exp(–ε)]/[4+8exp(–ε)] with effective difference ε = Egt/RT between the energies of gosh(g±)- and trans(t)-orientations of k-th methylene fragment of the chain relative to (k–1)-th one. A connection between the values λp, ζp, λ, ζ, q, ε with function Fa(n) and chemical structure of molecules was observed.

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Держатели документа:
Институт физики им. Л. В. Киренского, ФИЦ КНЦ СО РАН, Академгородок, 50, 660036 Красноярск, Россия

Доп.точки доступа:
Aver'yanov, E. M.

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Bound state in the continuum in 1D chain of dielectric disks: Theory and experiment / M. Balyzin [et al.] // J. Phys. Conf. Ser. - 2018. - Vol. 1092: 3rd International Conference on Metamaterials and Nanophotonics, METANANO 2018 (17 - 21 September 2018). - Ст. 012012, DOI 10.1088/1742-6596/1092/1/012012. - Cited References: 11. - This work is supported by RSF (17-12-01581)
Кл.слова (ненормированные):
1-D chains -- Bound state -- Ceramic disks -- Dielectric disks -- GHz frequencies -- Material loss -- Quadratic growth -- Zero angular momentum
Аннотация: In this work we experimentally observe a symmetry protected optical bound state in the continuum (BIC) with zero angular momentum in 1D array of ceramic disks at GHz frequencies. We analyze the dependence of Q factor of BIC on the number of the disks and the level of the material losses. We confirmed theoretical prediction about quadratic growth of the Q factor with the number of the disks and its following saturation due to material losses.

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Держатели документа:
Department of Nanophotonics and Metamaterials, ITMO University, Saint-Petersburg, Russian Federation
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Balyzin, M.; Sadrieva, Z.; Belyakov, M. A.; Kapitanova, P.; Sadreev, A. F.; Садреев, Алмаз Фаттахович; Bogdanov, A.; International Conference on Metamaterials and Nanophotonics(3rd ; 17 - 21 September 2018 ; Sochi, Russian Federation)
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Bulgakov, E. N.
Light guiding above the light line in arrays of dielectric nanospheres / E. N. Bulgakov, D. N. Maksimov // Opt. Lett. - 2016. - Vol. 41, Is. 16. - P. 3888-3891, DOI 10.1364/OL.41.003888. - Cited References: 46. - Russian Foundation for Basic Research (RFBR) (16-02-00314). . - ISSN 0146-9592

РУБ Optics
Рубрики:
SUBWAVELENGTH WAVE-GUIDES
   OPTICAL MODES
   NANOPARTICLES
   CHAINS
   RESONANCES
   PARTICLES
   SPHERES
Аннотация: We consider light propagation above the light line in arrays of spherical dielectric nanoparticles. It is demonstrated numerically that quasi-bound leaky modes of the array can propagate both stationary waves and light pulses to a distance of 60 wavelengths at the frequencies close to the bound states in the radiation continuum. A semi-analytical estimate for decay rates of the guided waves is found to match the numerical data to a good accuracy. © 2016 Optical Society of America.

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Держатели документа:
Kirensky Institute of Physics, Krasnoyarsk, Russian Federation
Siberian State Aerospace University, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Maksimov, D. N.; Максимов, Дмитрий Николаевич; Булгаков, Евгений Николаевич
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Overcoming the adverse effects of substrate on the waveguiding properties of plasmonic nanoparticle chains / I. L. Rasskazov [et al.] // J. Appl. Phys. - 2016. - Vol. 119, Is. 4. - Ст. 043101, DOI 10.1063/1.4940415. - Cited References: 43. - This work has been carried out thanks to the support of the A*MIDEX project (No. ANR-11-IDEX-0001-02) funded by the “Investissements d'Avenir” French Government program, managed by the French National Research Agency (ANR) and was also supported in part by the U.S. National Science Foundation under Grant No. DMS1216970 and by the Ministry of Education and Science of the Russian Federation under Contract No. 1792. . - ISSN 0021-8979

РУБ Physics, Applied
Рубрики:
LINEAR-CHAINS
   DISPERSION-RELATIONS
   ARRAYS
   RESONANCES
   GUIDES
   NANOSPHERES
   MODES
   FIELD
   POLARITONS
   PARTICLES
Аннотация: We have studied numerically the propagation of surface plasmon polaritons (SPPs) in linear periodic chains of plasmonic nanoparticles of different shapes. The chains are deposited on top of a thick dielectric substrate. While in many commonly considered cases the substrate tends to suppress the SPP propagation, we have found that this adverse effect is practically absent in the case when the nanoparticles have the shape of oblate spheroids with sufficiently small aspect ratio (e.g., nanodisks) whose axes of symmetry coincide with the axis of the chain. © 2016 AIP Publishing LLC.

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Держатели документа:
Siberian Federal University, Krasnoyarsk, Russian Federation
L. V. Kirensky Institute of Physics, Krasnoyarsk, Russian Federation
Siberian State Aerospace University, Krasnoyarsk, Russian Federation
Aerospace Systems Dirct., Air Force Research Laboratory, Wright-Patterson Air Force Base, OH, United States
Aix-Marseille Universite, CNRS, Centrale Marseille, Institut Fresnel UMR 7249, Marseille, France
Department of Radiology, University of Pennsylvania, Philadelphia, PA, United States

Доп.точки доступа:
Rasskazov, I. L.; Рассказов, Илья Леонидович; Karpov, S. V.; Карпов, Сергей Васильевич; Panasyuk, G. Y.; Markel, V. A.
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Val'kov, V. V.
Effect of intersite repulsion on the correlation functions and thermodynamics of an Ising chain with annealed magnetic disorder / V. V. Val’kov, M. S. Shustin // Bull. Russ. Acad. Sci. Phys. - 2016. - Vol. 80, Is. 11. - P. 1335-1337, DOI 10.3103/S1062873816110290. - Cited References: 6. - This work was supported by the Russian Foundation for Basic Research, project nos. 13-02-00073, 14-02-31237, and 15-42-04372. . - ISSN 1062-8738
Кл.слова (ненормированные):
Chains -- Magnetic susceptibility -- Temperature distribution -- Thermodynamics -- Transfer matrix method -- Correlation function -- Equilibrium behavior -- Equilibrium distributions -- Non-magnetic impurities -- Quantum phase transitions -- Repulsion parameter -- Temperature dependence -- Transfer matrix technique -- Phase transitions
Аннотация: An exact solution for a model describing the equilibrium behavior of an ensemble of Ising chains with nonmagnetic intersite repulsion of nearest neighbors and an equilibrium distribution of nonmagnetic impurities is obtained using the transfer matrix technique. The possibility of exciting quantum phase transitions using the intersite repulsion parameter in a system is demonstrated. Proximity to the critical points of these transitions has a substantial effect on the temperature dependence of a system’s magnetic susceptibility. © 2016, Allerton Press, Inc.

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Публикация на русском языке Вальков, Валерий Владимирович. Влияние эффектов межузельного отталкивания на корреляционные функции и термодинамику изинговской цепочки с отожженным магнитным беспорядком [Текст] / В. В. Вальков, М. С. Шустин // Изв. РАН. Сер. физич. - 2016. - Т. 80 № 11. - С. 1504-1506

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

Доп.точки доступа:
Shustin, M. S.; Шустин, Максим Сергеевич; Вальков, Валерий Владимирович
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Properties of a novel quaterpolymer P(3HB/4HB/3HV/3HHx) / T. G. Volova [et al.] // Polymer. - 2016. - Vol. 101. - P. 67-74, DOI 10.1016/j.polymer.2016.08.048 . - ISSN 0032-3861
Кл.слова (ненормированные):
Physicochemical and mechanical properties -- Polyhydroxyalkanoates -- Quaterpolymers -- Biocompatibility -- Cell culture -- Chain length -- Chains -- Decomposition -- 3-Hydroxyhexanoate -- Degrees of crystallinity -- Elongation at break -- Physico-chemical and mechanical properties -- Polyhydroxyalkanoates -- Quaterpolymers -- Short chain lengths -- Thermal decomposition temperature -- Film preparation
Аннотация: Cupriavidus eutrophus В10646 was used to synthesize a series of polyhydroxyalkanoate (PHA) quaterpolymers composed of the short-chain-length 3-hydroxybutyrate (3HB), 4-hydroxybutyrate (4HB), and 3-hydroxyvalerate (3HV) and the medium-chain-length 3-hydroxyhexanoate (3HHx). The molar fraction of 3HB in the quaterpolymers varied between 63.5 and 93.1 mol.%, 3HV – between 1.1 and 24.6 mol.%, 4HB – between 2.4 and 15.6 mol.%, and 3HHx – between 0.4 and 4.8 mol.%. The properties of PHA quaterpolymers were significantly different from those of the P(3HB) homopolymer: they had much lower degrees of crystallinity (up to 30–45%), and lower melting points and thermal decomposition temperatures, with the interval between these temperatures remaining practically unchanged. Films prepared from PHA quaterpolymers were rougher and more porous than P(3HB) films; they showed higher values of elongation at break (up to 6–113%), i.e. were more elastic. Films prepared from PHA quaterpolymers were biocompatible and had no toxic effect on mouse fibroblast NIH 3T3 cells. © 2016 Elsevier Ltd

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Держатели документа:
Siberian Federal University, 79 Svobodnyi Avenue, Krasnoyarsk, Russian Federation
Institute of Biophysics of Siberian Branch of Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, Russian Federation
Institute of Chemistry and Chemical Technology of Siberian Branch of Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, Russian Federation
L.V. Kirensky Institute of Physics of Siberian Branch of Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Volova, T. G.; Волова, Татьяна Григорьевна; Vinogradova, O. N.; Zhila, N. O.; Жила, Наталья Олеговна; Peterson, I. V.; Петерсон, Иван Викторович; Kiselev, E. G.; Киселев, Евгений Геннадьевич; Vasiliev, A. D.; Васильев, Александр Дмитриевич; Sukovatiy, A. G.; Суковатый, Алексей Григорьевич; Shishatskaya, E. I.; Шишацкая, Екатерина Игоревна
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Crystal structures of new potassium silicates and aluminosilicates of Sm, Tb, Gd, and Yb and their relation to the armstrongite (CaZr(Si6O15)·3H2O) structure / V. K. Taroev [et al.] // J. Solid State Chem. - 2015. - Vol. 227. - P. 196-203, DOI 10.1016/j.jssc.2015.03.004. - Cited References:27. - We appreciate the financial support by the Russian Fund of Basic Research under grant 10-05-00344-a. We thank the two anonymous reviewers for their helpful comments and suggestions and Ms. Schroeder (KIT-PKM) for improving the English of the manuscript. . - ISSN 0022. - ISSN 1095-726X. -

РУБ Chemistry, Inorganic & Nuclear + Chemistry, Physical
Рубрики:
BOND-VALENCE PARAMETERS
CHAINS
SYSTEM
Кл.слова (ненормированные):
Hydrothermal synthesis -- REE-potassium silicates -- X-ray diffraction -- Crystal structure refinement
Аннотация: Silicates of composition K7.81Sm3Si12O32(OH)0.81·0.77H2O and K7Tb3Si12O32·1.36H2O, with the space group P 1 ¯ and unit cell parameters of a=6.9218(3), b=11.4653(4), c=11.6215(4) Å, α=88.063(3)°, β=88.449(3)°, γ=79.266(3)° and a=6.872(3), b=11.440(5), c=11.542(6) Å, α=88.19(4)°, β=88.86(4)°, γ=79.65(4)°, respectively, were synthesized under hydrothermal conditions. Both crystal structures were determined from twinned crystals, and can be idealized to a composition of K7Ln3Si12O32 (KOH)x(H2O)(2−x) (Ln=Sm, Tb), which is closely related to K8Nd3Si12O32(OH). Crystals of the aluminosilicates K2GdAlSi4O12·0.25H2O and K2SmAlSi4O12·0.375H2O prepared by the same method possess monoclinic symmetry with the space group C2/c. The corresponding unit cell parameters are: a=26.67(1), b=7.294(3), c=14.835(6) Å, β=123.44(3)°; and a=26.7406(9), b=7.3288(2), c=14.8498 (6) Å, β=123.514(1)°, respectively. A new type of silicate anion that forms tubes was detected in the K4Yb2Si8O21 structure. K4Yb2Si8O21 is of monoclinic symmetry with the space group C2/c. The unit cell parameters are: a=17.440(2), b=11.786(1), c=12.802 (2) Å, and β=130.902(1)°. The structure is a mixed framework of tubes formed by silica-oxygen tetrahedra connected by pairs of edge sharing Yb-octahedra. The relation of the silicate layers and frameworks encountered in these compounds to the armstrongite silicate framework is discussed.

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Держатели документа:
RAS, Ap Vinogradov Geochem Inst, Siberian Branch, Irkutsk 664033, Russia
Natl Res Irkutsk State Tech Univ, Irkutsk 664054, Russia
RAS, Inst Earth Crust, Siberian Branch, Irkutsk 664054, Russia
Univ Hamburg, Mineral Petrog Inst, D-20146 Hamburg, Germany
Karlsruhe Inst Technol, ANKA Synchrotron Radiat Facil, D-76344 Eggenstein Leopoldshafen, Germany
RAS, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Taroev, V. K.; Kashaev, A. A.; Malcherek, T.; Goettlicher, J.; Kaneva, E. V.; Vasiljev, A. D.; Васильев, Александр Дмитриевич; Suvorova, L. F.; Suvorova, D. S.; Tauson, V. L.; Russian Fund of Basic Research [10-05-00344-a]
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Propagation of surface plasmon polaritons in chains of non-spherical nanoparticles: the influence of the dielectric substrate / I. L. Rasskazov [и др.] // Annual Int. Conf. "Days on Diffraction" : [book of abstracts]. - 2015. - P. 166-167

Материалы конференции

Доп.точки доступа:
Rasskazov, I. L.; Рассказов, Илья Леонидович; Gerasimov, V. S.; Герасимов, Валерий Сергеевич; Karpov, S. V.; Карпов, Сергей Васильевич; Panasyuk, G. Y.; Markel, V. A.; "Days on diffraction", International conference(2015 ; may ; 25-29 ; St. Petersburg); Санкт-Петербургское отделение Института математики им. В. А. Стеклова; Санкт-Петербургский государственный университет; Euler International Mathematical Institute; Российский фонд фундаментальных исследований
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Controllable propagation of surface plasmon polaritons in chains of non-spherical nanoparticles on dielectric substrate / I. L. Rasskazov [и др.] // Electromagnetic & Light Scattering XV : abstracts. - Leipzig, 2015. - Ст. 88

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Доп.точки доступа:
Rasskazov, I. L.; Рассказов, Илья Леонидович; Karpov, S. V.; Карпов, Сергей Васильевич; Panasyuk, G. Y.; Markel, V. A.; Electromagnetic and Light Scattering Conference(15 ; 2015 ; Jun. ; 21-26 ; Leipzig, Germany)
}
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10.

Rasskazov, I. L.
Surface plasmon polaritons in curved chains of metal nanoparticles / I. L. Rasskazov, S. V. Karpov, V. A. Markel // Phys. Rev. B. - 2014. - Vol. 90, Is. 7. - Ст. 75405, DOI 10.1103/PhysRevB.90.075405. - Cited References: 34. - This research was supported in part by the US National Science Foundation under Grant DMS1216970, by the Russian Academy of Sciences under the Grants 24.29, 24.31, III. 9.5, 43, SFU (101), and also by the Russian Ministry of Education and Science under the Contract 1792. . - ISSN 1098-0121. - ISSN 1550-235X

РУБ Physics, Condensed Matter
Рубрики:
LINEAR-CHAINS
   DISPERSION-RELATIONS
   ARRAYS
   RESONANCES
   FIELD
Аннотация: We investigate numerically the propagation of steady-state monochromatic surface plasmon polaritons (SPPs) in curved chains of metal nanoparticles of various spheroidal shapes. We discuss the SPP propagation (decay of the amplitude), the polarization conversion due to coupling of orthogonally polarized SPPs, and the electromagnetic field localization in the near-field vicinity of a chain.

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Держатели документа:
LV Kirenskii Inst Phys, Krasnoyarsk 660036, Russia
Siberian Fed Univ, Krasnoyarsk, Russia
Siberian State Aerosp Univ, LV Kirensky Phys Inst, Krasnoyarsk, Russia
Univ Penn, Dept Radiol, Philadelphia, PA 19104 USA
Univ Penn, Dept Bioengn, Philadelphia, PA 19104 USA
Univ Penn, Grad Grp Appl Math & Computat Sci, Philadelphia, PA 19104 USA

Доп.точки доступа:
Karpov, S. V.; Карпов, Сергей Васильевич; Markel, V. A.; Рассказов, Илья Леонидович; US National Science Foundation [DMS1216970]; Russian Academy of Sciences [24.29, 24.31, III. 9.5, 43, SFU (101)]; Russian Ministry of Education and Science [1792]
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