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Общее количество найденных документов : 68
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1.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : VETROV S. Y., SADREEV A. F., SHABANOV A. V., SHABANOV V. F.
Заглавие : ORIENTATION STRUCTURE OF CAPSULATED CHOLESTERICS
Место публикации : Zhurnal Eksperimentalnoi Teor. Fiz.: MEZHDUNARODNAYA KNIGA, 1993. - Vol. 104, Is. 5. - P3630-3642. - ISSN 0044-4510
Примечания : Cited References: 27
Предметные рубрики: LIQUID-CRYSTALS
DROPLETS
DEPENDENCE
WOS
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2.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Zyryanov V. Ya., Smorgon S. L., Shabanov V. F., Andreev A. L., Pozhidaev E. P., Kompanets I. N.
Заглавие : Volume bistabiljty in ferroelectric liquid crystal droplets
Коллективы : International Liquid Crystal Conference
Место публикации : 16th International Liquid Crystal Conference (ILCC 1996): program and abstract book. - 1996. - Ст.D1P.24. - P.168
Аннотация: The effect ofvolume bistability (VB) has recently been discovered and analysed [1] in thick (15 mem and more) layers ofpurposefully created ferroelectric liquid crystal (FLC) compositions. VB is a phenomenon that is mainly associated with the stereochemical nature of the FLC composition and is practically independent of the surface. We have studied the characteristics of planar-oriented PDFLC films obtained based on the above compositions. The effect of VB is shown to take place in large-size droplets. Unlike pure layers, VB in FLC droplets is of a reverse nature, i.e. an optical state is memorised that is opposite to the optical state corresponding to the polarity ofthe driving pulse. We discuss the features typical of VB in FLC droplets and make a comparison between the results obtained and the results ofsurface bistability studies in FLC droplets [2].
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3.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Presnyakov V. V., Smorgon S. L., Shabanov V. F., Zyryanov V. Ya.
Заглавие : Friedericksz transition in elongated nematic droplets
Коллективы : International Liquid Crystal Conference
Место публикации : 16th International Liquid Crystal Conference (ILCC 1996): program and abstract book. - 1996. - Ст.B1P.10. - P.44
Аннотация: We have studied the process of reorientation of 5CB nematic droplets dispersed in a stretched polyvinylbutyral film. Unlike [1,2], poles ofbipolar droplets have been observed to remain fixed. Reorientation starts at the centre of the droplet gradually progressing towards the droplet surface. It has been found that in samples containing large droplets, the light transmission dependence on the applied voltage has an oscillating behaviour. A qualitative explanation to this phenomenon can be given by using the anomal diffraction approach presented in [3]. An experimental technique is described to determine the Friedericksz threshold value in polymer dispersed nematic liquid crystals. The Friedericksz threshold value has been measured versus the size and the shape ofthe nematic droplets. The results obtained are analysed in terms oftheoretical models [1,2].
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4.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Presnyakov V. V., Zyryanov V. Ya., Shabanov V. F., Vetrov S. Ya.
Заглавие : Friedericksz threshold field in bipolar droplets with rigidly fixed poles
Коллективы : International Liquid Crystal Conference
Место публикации : 17th International Liquid Crystal Conference (ILCC 1998): program and abstract book. - 1998. - P.253
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5.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Smorgon S. L., Zyryanov V. Ya., Shabanov V. F., Pozhidaev E. P.
Заглавие : Textures and orientational structures of elongated FLC droplets in polymer matrix
Коллективы : International Liquid Crystal Conference
Место публикации : 17th International Liquid Crystal Conference (ILCC 1998): program and abstract book. - 1998. - P.252
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6.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zyryanov V. Ya., Smorgon S. L., Shabanov V. F., Pozhidaev E. P.
Заглавие : Orientational structures of elongated droplets of ferroelectric liquid crystals in polymer matrix
Место публикации : Molecular Materials. - 1998. - Vol. 9, N. 2. - P.139-145
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7.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zyryanov V. Ya., Smorgon S. L., Shabanov V. F., Pozhidaev E. P.
Заглавие : Orientational structures of elongated droplets of ferroelectric liquid crystals in polymer matrix
Место публикации : Molecular crystals and liquid crystals science and technology : section C- Molecular materials. - 1998. - Vol. 9, Is. 2. - P.139-145
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8.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Presnyakov V. V., Vetoshkin S. A., Zyryanov V. Ya., Shabanov V. F.
Заглавие : Electro-optical response of uniaxially oriented PDChLC films with various droplets anisometry and concentration of the chiral additive
Коллективы : MRS Spring meeting
Место публикации : MRS (Materials Research Society) Spring meeting: abstracts. - 1999. - Symposium D - Liquid Crystal Materials and Devices. - Ст.D6.1. - P.85
Аннотация: Uniaxially oriented films of polymer dispersed cholesteric liquid crystals (PDChLC) is a new perspective material for multifunctional optoelectronic elements. The material presents a polymer film with an ensemble of elongated cholesteric droplets dispersed therein. Long axes of the droplets are oriented preferably uniaxially in the film plane. These films reveal a great anisotropy of the polarized light transparency, which depends strongly on the applied electric field, concentration of the chiral additive and shape of the droplets. We have found the optimal composition and droplets anisometry to produce the films, which can be switched by applied voltage between three different optical states: scattering light of any polarization, transmitting the one linear-polarized component only and transparency for light any polarization. A device employing these films may be used as a modulator of the whole of the light, as a modulator of one linearly polarized component only and as a light polarizer.
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9.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Mendez-Bermudez J. A., Luna-Acosta G. A., Seba P., Pichugin K. N.
Заглавие : Chaotic waveguide-based resonators for microlasers
Место публикации : Phys. Rev. B: AMERICAN PHYSICAL SOC, 2003. - Vol. 67, Is. 16. - Ст.161104. - ISSN 1098-0121, DOI 10.1103/PhysRevB.67.161104
Примечания : Cited References: 33
Предметные рубрики: QUANTUM-CLASSICAL CORRESPONDENCE
MORPHOLOGY-DEPENDENT RESONANCES
DIRECTIONAL EMISSION
OPTICAL CAVITIES
MICRODISK LASERS
WAVE CHAOS
DROPLETS
PRECESSION
BILLIARDS
STATES
Аннотация: We propose the construction of highly directional emission microlasers using two-dimensional high-index semiconductor waveguides as open resonators. The prototype waveguide is formed by two collinear leads connected to a cavity of certain shape. The proposed lasing mechanism requires that the shape of the cavity yield mixed chaotic ray dynamics so as to have the approplate (phase space) resonance islands. These islands allow, via Heisenberg's uncertainty principle, the appearance of quasibound states (QBSs) which, in turn, propitiate the lasing mechanism. The energy values of the QBSs are found through the solution of the Helmholtz equation. We use classical ray dynamics to predict the direction and intensity of the lasing produced by such open resonators for typical values of the index of refraction.
WOS,
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Prischepa O. O., Shabanov A. V., Zyryanov V. Y.
Заглавие : Transformation of director configuration upon changing boundary conditions in droplets of nematic liquid crystal
Место публикации : JETP Letters. - 2004. - Vol. 79, Is. 6. - P.257-261. - ISSN 0021-3640, DOI 10.1134/1.1759405
Примечания : Cited References: 12
Предметные рубрики: ISOTROPIC LIQUID
DROPS
Аннотация: The transformation of the director configuration upon changing boundary conditions from planar to homeotropic for bipolar nematic droplets dispersed in a polymeric matrix was studied. The characteristic textural patterns are presented for droplets with different concentrations of homeotropic surfactants, and their orientational structure is identified. The scenario predicted earlier by G.E. Volovik and O.D. Lavrentovich (ZhETF 85, 1997 (1983)) for the transformation of orientational structure of nematic droplets from bipolar to radial, without the formation of additional disclinations, is revealed. It is shown that, by using the computational method of minimization of the director elastic-strain energy in the droplet bulk and by introducing the inhomogeneous boundary conditions, one can obtain orientational structures that are analogous to the observed ones.(C) 2004 MAIK "Nauka / Interperiodica".
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