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Aver'yanov, E. M.
Local-Field Anisotropy of a Light Wave in Quasi-Two-Dimensional Soft-Matter Objects / E. M. Aver'yanov // J. Exp. Theor. Phys. - 2010. - Vol. 110, Is. 4. - P. 622-636, DOI 10.1134/S1063776110040102. - 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). . - ISSN 1063-7761

РУБ Physics, Multidisciplinary
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
Кл.слова (ненормированные):
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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Держатели документа:
Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
ИФ СО РАН
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Аверьянов, Евгений Михайлович
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