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1.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Averyanov E. M., Zhuikov V. A., Adomenas P. V.
Заглавие : Conformational change induced in mesomolecules by smectic a-nematic-isotropic liquid-phase transitions
Место публикации : JETP Letters. - 1981. - Vol. 33, Is. 5. - P.248-251. - ISSN 0021-3640
Примечания : Cited References: 11
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2.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : AVERYANOV E. M.
Заглавие : SMECTIC-A - NEMATIC PHASE-TRANSITION IN A SYSTEM OF CONFORMATION INSTABLE MOLECULES
Место публикации : Fiz. Tverd. Tela: MEZHDUNARODNAYA KNIGA, 1983. - Vol. 25, Is. 1. - P293-295. - ISSN 0367-3294
Примечания : Cited References: 9
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3.

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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4.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Averyanov E. M., Adomenas P. V., Zhuikov V. A., Zyryanov V. Ya.
Заглавие : Orientational melting of low chains of molecules and nature of the nematic-smectic A-phase transition
Место публикации : JETP Letters. - 1986. - Vol. 43, Is. 2. - P.117-120. - ISSN 0021-3640
Примечания : Cited References: 13
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5.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Averyanov E. M.
Заглавие : Orientation ordering and critical behavior of discoid nematics
Место публикации : Zhurnal Eksperimentalnoi Teor. Fiz.: MEZHDUNARODNAYA KNIGA, 1996. - Vol. 110, Is. 5. - P1820-1840. - ISSN 0044-4510
Примечания : Cited References: 55
Предметные рубрики: LIQUID-CRYSTALS
PHASE-TRANSITION
ISOTROPIC-PHASE
LOCAL FIELD
SMECTIC-A
MOLECULES
SUSCEPTIBILITY
CONFORMATION
PARAMETER
DYNAMICS
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6.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Aver'yanov E. M.
Заглавие : Fluctuations of orientational order in a uniaxial nematic liquid crystal with biaxial molecules and its response to an external field
Место публикации : Phys. Solid State: AMER INST PHYSICS, 2003. - Vol. 45, Is. 5. - P990-1001. - ISSN 1063-7834, DOI 10.1134/1.1575350
Примечания : Cited References: 30
Предметные рубрики: PHASE-TRANSITION
SMECTIC-A
PARTICLES
SYSTEM
LANDAU
MODEL
Аннотация: Homogeneous thermal fluctuations of the orientational order parameters S and G of biaxial molecules in a uniaxial nematic liquid crystal are investigated in the framework of the molecular-statistical theory. It is demonstrated that the molecular biaxiality significantly affects the order parameters S and G, their temperature dependences in the nematic phase, the amplitude and the temperature dependence of the order parameter fluctuations in the nematic and isotropic phases, and the character of the transition from the nematic phase to the isotropic liquid phase. It is established that the fluctuations of the parameters S and G in the nematic phase are related to the temperature dependences of S and G and the susceptibilities chi(S) and chi(G) of the nematic liquid crystal to external fields, which leads to a change in the parameters S and G at a fixed director orientation. Explanations are offered for the known experimental data on the orientational ordering of biaxial molecules under the action of external fields in the isotropic phase of nematic liquid crystals. (C) 2003 MAIK "Nauka/Interperiodica".
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7.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Aver'yanov E. M.
Заглавие : Local-Field Anisotropy of a Light Wave in Quasi-Two-Dimensional Soft-Matter Objects
Коллективы :
Разночтения заглавия :авие SCOPUS: Local-field anisotropy of a light wave in quasi-two-dimensional soft-matter objects
Место публикации : J. Exp. Theor. Phys.: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2010. - Vol. 110, Is. 4. - P622-636. - ISSN 1063-7761, DOI 10.1134/S1063776110040102
Примечания : Cited References: 73. - This study was supported by the Presidium of the Russian Academy of Sciences within the Program of Basic Research (project no. 27.1) and the Siberian Branch of the Russian Academy of Sciences within the Program of Interdisciplinary Basic Research (project no. 5).
Предметные рубрики: INTEGRATED OPTICAL TECHNIQUES
LANGMUIR-BLODGETT-FILMS
SMECTIC LIQUID-CRYSTALS
UNIAXIAL POLYMER-FILMS
MOLECULAR-ORIENTATION
INTERNAL FIELD
DIELECTRIC-CONSTANT
SPECTRAL FEATURES
REFRACTIVE-INDEX
THIN-FILMS
Ключевые слова (''Своб.индексиров.''): anisotropic films--bilayer lipid membrane--chemical structure--comblike polymers--conductive polymer--discotics--dispersion of refractive index--experimental data--experimental values--hexatic-b phase--isotropization--langmuir films--light wave--lorentz--macromolecular polymers--model approach--molecular polarizabilities--optical axis--order parameter--orientational order parameters--orientational orderings--orientational orders--smectic layers--smectic-a--smectics--soft matter--structural unit--sub-micron films--substrate types--tensor components--visible range--anisotropy--cell membranes--conductive plastics--conjugated polymers--electronic structure--light measurement--liquid crystal polymers--molecules--multilayer films--organic polymers--phase transitions--polarization--polymers--refractive index--substrates--tensors--two dimensional--conductive films
Аннотация: Experimental values of the Lorentz tensor components L-j for uniaxial quasi-two dimensional "soft matter" objects on substrates (bilayer lipid membranes, multilayer Langmuir films, smectics A, hexatic smectics B, submicron films of discotics Col(hd), micron anisotropic films of liquid-crystal comblike polymers and macromolecular polymers, submicron films of conjugated conductive polymers), freely suspended sub-micron films of smectics A, and uniaxially stretched micron films of conjugated conductive polymers have been determined using dispersion of refractive indices in the visible range. The dependences of the components L-j on the type of orientation (axial, planar) of uniaxial molecules (structural units of the film) with respect to the optical axis of the film, the film thickness, the substrate type, the chemical structure of molecules, and their long-range orientational order are established. It is revealed that the smectic A-hexatic B phase transition and two-dimensional crystallization of the smectic layer lead to changes in the components L-j due to the change in the orientational ordering of molecules as a result of the relation between the orientational and hexatic order parameters. All the above objects are characterized by isotropization of the Lorentz tensor L and the local-field tensor f with a simultaneous decrease in the birefringence of the sample and in the anisotropy of the molecular polarizability due to the change in the electronic structure of molecules. The correction for the anisotropy of the local-field tensor f to the orientational order parameter or the anisotropy of the molecular polarizability increases. The existing model approaches to calculating the components L-j for the objects under consideration are compared with the experimental data.
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8.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Chen C. H., Zyryanov V. Ya., Lee W.
Заглавие : Switching of defect modes in a photonic structure with a tristable smectic-A liquid crystal
Место публикации : Appl. Phys. Express. - 2012. - Vol. 5, Is. 8. - Ст.82003. - ISSN 1882-0778, DOI 10.1143/APEX.5.082003
Примечания : Cited References: 13. - We acknowledge discussions with Po-Chang Wu and Aaron J. Archibald. This work was financially supported by the National Science Council of the Republic of China (Taiwan) through Grants Nos. NSC 98-2923-M-033-001-MY3 and NSC 98-2112-M-009-023-MY3 and by the Siberian Branch of the Russian Academy of Sciences (SB RAS) through Grants Nos. 43, 101 and 24.29, 24.32.
Предметные рубрики: LAYER
Аннотация: A one-dimensional (1D) photonic crystal (PC) optical device based on smectic-A (SmA) liquid crystal (LC) as a defect layer is proposed. The reversible tristability of the SmA LC is used to realize a low-energy-consumption device. With a voltage-induced scattering state, the PC-SmA hybrid cell can work as a polarizer-free optical switch. The variation of the effective refractive index of the LC substance enables the defect modes to appear at variable wavelengths, changing with the voltage-induced reorientation of the LC director. As a result, an electrically and thermally tunable multichannel optical device is achieved using this hybrid, optically tristable structure. (c) 2012 The Japan Society of Applied Physics
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9.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Aver'yanov E. M.
Заглавие : Mean polarizability of molecules and anisotropy of the Lorentz tensor upon a nematic-smectic a phase transition: Their behavior in a homologous series
Место публикации : Russ. J. Phys. Chem. A: MAIK Nauka-Interperiodica / Springer, 2012. - Vol. 86, Is. 5. - P.720-728. - ISSN 0036-0244, DOI 10.1134/S0036024412050044
Примечания : Cited References: 37
Предметные рубрики: CHOLESTERIC LIQUID-CRYSTALS
REFRACTIVE-INDEX DATA
A PHASE
MESOMORPHIC PROPERTIES
ORIENTATIONAL ORDER
OPTICAL ANISOTROPY
LOCAL-FIELD
POLYMORPHISM
TEMPERATURE
A-monotone
Alkyl chain
Experimental values
Homologous series
Homologues
Limiting values
Lorentz
Mesophases
Molecular core
Molecular polarizabilities
Nematic
Orientational order parameters
Polarizabilities
Polarizability density
Quadratic dependence
A-monotone
Smectic
Smectic phase
Smectic phasis
Smectic-A phasis
Ключевые слова (''Своб.индексиров.''): molecular polarizability--anisotropy--phase transition--nematic--smectic--homologues
Аннотация: Experimental values of the mean polarizability of molecules, (gamma) over bar, and components of the Lorentz tensor, L-j, in the nematic and smectic A phases are obtained for a homologous series of n-alkyl-p-(4-ethoxybenzylideneamino)-alpha-methylcinnamates. Dependences of the (gamma) over bar and L-j values on the mesophase temperature, the orientational order parameter S of molecules, and the number n in the homologous series are revealed. The quadratic dependence of (gamma) over bar (S) in the nematic and smectic phases is established that is invariant with respect to the nematic-smectic A transition. Polarizability densities of the molecular core and the alkyl chain are found from the monotone decreasing dependence (gamma) over bar (n)/v (where v is volume per one molecule) in the smectic phase. The presence (or absence) of the odd-even alternation of L-j(n) in the nematic (smectic) phase is shown. A monotone decrease in the Lorentz tensor anisotropy L with an increase in n is revealed in the smectic phase, and limiting values L-j(n - infinity) are determined.
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Korshunov M. A., Shabanov A. V.
Заглавие : Molecular dynamics investigation of the helical structure of smectic C*
Место публикации : Phys. Solid State: MAIK Nauka-Interperiodica / Springer, 2012. - Vol. 54, Is. 8. - P.1704-1708. - ISSN 1063-7834, DOI 10.1134/S106378341208015X
Примечания : Cited References: 34
Предметные рубрики: LIQUID-CRYSTALS
SHORT-PITCH
FORCE-FIELD
SIMULATIONS
MODES
PHASE
DOBAMBC
POWER
Аннотация: The numerical simulation of the behavior of the molecules of the DOBAMBC liquid crystal by the molecular dynamics method allowed us to find the change of the the conformation of molecules as a function of temperature and to reveal the helical structures with various pitches in the smectic phase C*. These results explained the anomalous temperature dependences of the order parameter at the molecular level, as well as the optical second harmonic generation in the region of smectic A.
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