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Общее количество найденных документов : 23
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Averyanov E. M.
Заглавие : Relation between orientational order parameters of matrix and probe in nematic liquid-crystals
Коллективы : USSR-italy bilateral meeting on liquid crystals
Разночтения заглавия :авие SCOPUS: Relation between orientational order parameters of matrix and probe in nematic liquid crystals
Место публикации : Nuovo Cimento Soc. Ital. Fis. D-Condens. Matter At. Mol. Chem. Phys. Fluids Plasmas Biophys. - 1990. - Vol. 12, Is. 9. - P.1281-1291. - ISSN 0392-6737, DOI 10.1007/BF02450394
Примечания : Cited References: 33
Ключевые слова (''Своб.индексиров.''): liquid crystals--phase equilibria, phase transitions and critical points of specific substances
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2.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Averyanov E. M.
Заглавие : Character of the N-D-D-h(0,d) phase transition in diskotic liquid crystals
Место публикации : JETP Letters. - 1996. - Vol. 63, Is. 1. - P.33-37. - ISSN 0021-3640, DOI 10.1134/1.566959
Примечания : Cited References: 20
Предметные рубрики: MOLECULES
CONSTANTS
SPLAY
BEND
Аннотация: The first experimental data on the orientational ordering of a diskotic reentrant nematic N-D are presented. The data show that the phase transition N-D-D-h(0,D-d) is a strong first-order transition with a large jump Delta S similar or equal to 0.2 in the orientational order parameter S of the molecules. This indicates an anomalously strong coupling between the columnar and orientational ordering of the molecules and explains the absence of fluctuational divergence of the elastic moduli K-11 and K-22 in the nematic phase near this transition. (C) 1996 American Institute of Physics.
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3.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : AVERYANOV E. M.
Заглавие : MIXING THE MOLECULAR EXCITATIONS IN MONOAXIAL LIQUID-CRYSTALS
Место публикации : Zhurnal Eksperimentalnoi Teor. Fiz.: MEZHDUNARODNAYA KNIGA, 1995. - Vol. 108, Is. 1. - P258-280. - ISSN 0044-4510
Примечания : Cited References: 60
Предметные рубрики: LOCAL FIELD
INFRARED DICHROISM
DISPERSIONS
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4.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Averyanov E. M.
Заглавие : Orientational order and critical-behavior of a discoid nematic liquid-crystal
Место публикации : JETP Letters. - 1995. - Vol. 61, Is. 10. - P.815-820. - ISSN 0021-3640
Примечания : Cited References: 14
Предметные рубрики: MOLECULES
Аннотация: First experimental data on the orientational order of the molecules in a discoid nematic liquid crystal are reported. These results are dramatically at odds with the results of a numerical simulation for rigid disk-shaped molecules. The N-D-I phase transition is simultaneously close to an isolated Landau critical point and to the tricritical point, as in ordinary calamite nematic liquid crystals with Planckian molecules. This result indicates that conformational degrees of freedom of the molecule play an important role in the features of the N-D-I transition. (C) 1995 American Institute of Physics.
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5.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : AVERYANOV E. M.
Заглавие : STATIONARY SPECTRUM OF ADMIXED LIQUID-CRYSTAL POLARIZED FLUORESCENCE
Место публикации : Zhurnal Eksperimentalnoi Teor. Fiz.: MEZHDUNARODNAYA KNIGA, 1994. - Vol. 106, Is. 3. - P767-779. - ISSN 0044-4510
Примечания : Cited References: 29
Предметные рубрики: LOCAL FIELD
SPECTROSCOPY
PARAMETERS
DYES
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6.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Averyanov E. M.
Заглавие : Splitting of polarized impurity fluorescence bands in the steady-state spectrum of an isotropic solution
Место публикации : JETP Letters. - 1994. - Vol. 59, Is. 1. - P.23-26. - ISSN 0021-3640
Примечания : Cited References: 12
Предметные рубрики: RELAXATION
Аннотация: A difference is predicted between the peaks, nu(VV) and nu(VH), Of the polarized components J(VV)(nu) and J(VH)(nu) in the steady-state spectrum of impurity fluorescence in an isotropic solution. This difference would result from a temporal correlation between an orientational Brownian diffusion of excited fluorescing molecules and a structural relaxation of the surrounding matrix molecules.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : AVERYANOV E. M.
Заглавие : POLARIZED LUMINESCENCE SPECTRUM OF IMPURITY LIQUID-CRYSTAL - THE DEGENERATION LIFTED AND RENEWED BY RELAXATION
Место публикации : Zhurnal Eksperimentalnoi Teor. Fiz.: MEZHDUNARODNAYA KNIGA, 1993. - Vol. 103, Is. 6. - P2018-2038. - ISSN 0044-4510
Примечания : Cited References: 45
Предметные рубрики: RESOLVED FLUORESCENCE DEPOLARIZATION
UNIAXIAL MOLECULAR SAMPLES
NEMATIC ORDER PARAMETERS
EXCITED-STATES
SPECTROSCOPY
MEMBRANES
FLUOROPHORES
ORIENTATION
TRANSITION
DYES
Аннотация: The general molecular-statistical approach is proposed for the analysis or the polarized luminescence spectrum for impurity molecule of an arbitrary symmetry in the nematic liquid crystal matrix. On the particular example of uniaxial molecules the influence of features of the molecular electron structure, orientational statistics, molecular dynamics, and features of the anisotropic intermolecular coupling upon the positions of maxima v(if)(t) of impurity fluorescence polarized bands J(ij)(t) is studied. For the first time it is shown that all these factors significantly affect the degree of spectrum v(ij)(t) degeneration. For t not-equal 0, relaxation of excited impurity molecule subsystem toward the orientational distribution lifts a partial degeneration of spectrum v(ij), occuring at t not-equal 0, and renews partial or total degeneration of spectrum v(ij) in the limit t = infinity. In the lack of the spectrum v(ij) degeneration for t = 0 the relaxation may restore partial degeneration for t not-equal 0 as a function of the features of electron structure of molecules. The results of work explain the familiar experimental data on the number of independent component v(ij) and relation between them, on dependence of v(ij) upon the order of matrix and impurity subsystem, on the mutual relation in the positions of impurity band polarized component in the absorption and fluorescence spectra.
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8.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Averyanov E. M., Gunyakov V. A.
Заглавие : New features in the structural relaxation of a nematic liquid-crystal doped with luminescent impurity molecules
Место публикации : JETP Letters. - 1993. - Vol. 57, Is. 8. - P.492-496. - ISSN 0021-3640
Примечания : Cited References: 15
Предметные рубрики: FLUORESCENCE DEPOLARIZATION
ORIENTATIONAL RELAXATION
FLUOROPHORES
Аннотация: A new approach is proposed for interpreting the polarized fluorescence spectra of an impure liquid crystal in which the orientational order of excited impurity molecules has undergone relaxation. This approach has also been realized experimentally. The new experimental data demonstrate a new relaxation process with a time scale on the order of 10(-11)-10(-9) s.
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9.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Averyanov E. M., Rumyantsev V. G., Muratov V. M.
Заглавие : Giant spectral response of impure nematic liquid-crystal to applied field at freedericksz transition
Место публикации : JETP Letters. - 1990. - Vol. 51, Is. 5. - P320-323. - ISSN 0021-3640
Примечания : Cited References: 5
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10.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Averyanov E. M., Adomenas P. V., Zhuikov V. A., Zyryanov V. Ya.
Заглавие : Specificity of orientation ordering of molecular fragments and the nature of the nematic smectic-A phase-transition in liquid-crystals
Место публикации : Zhurnal Eksperimentalnoi Teor. Fiz. - 1986. - Vol. 91, Is. 2. - P.552-559. - ISSN 0044-4510
Примечания : Cited References: 28
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