The nature of prolate shape of tactoids in lyotropic inorganic liquid crystals

被引：85

作者：

Kaznacheev, AV ^{[1
]}

Bogdanov, MM ^{[1
]}

Taraskin, SA ^{[1
]}

机构：

[1] Russian Acad Sci, AN Nesmeyanov Organoelement Cpds Inst, Moscow 117813, Russia

来源：

JOURNAL OF EXPERIMENTAL AND THEORETICAL PHYSICS | 2002年 / 95卷 / 01期

关键词：

D O I：

10.1134/1.1499901

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A tactoid phase is obtained, which is an anisotropic mesophase dispersed in an anisotropic solution. A model is constructed that describes the shape of anisotropic regions, i.e., tactoids. It is demonstrated that the prolate shape of tactoids is caused by the competition between the elastic energy of the nematic phase and the surface energy. This model is used to find the ratio of elastic constants K-3/K-1 from the experimental data. It is experimentally found that a magnetic field orients and stretches tactoids. An explanation of this phenomenon is suggested. (C) 2002 MAIK "Nauka / Interperiodica".

引用

页码：57 / 63

页数：7

共 25 条

[1]

ARFKEN G, 1966, MATH METHODS PHYSICI

[2]

BERNAL J. D., 1937, NATURE [LONDON], V139, P923, DOI 10.1038/139923a0

[3]

BILTZ W, 1904, BER DEUH CHEM GES, V37, P109

[4] SURFACE PHYSICS OF THERMOTROPIC LIQUID-CRYSTALS [J].

BLINOV, LM ;

KATS, EI ;

SONIN, AA .

USPEKHI FIZICHESKIKH NAUK, 1987, 152 (03) :449-477

[5]

BLINOV LM, 1987, SOV PHYS USP, V30, P604

[6] A STRUCTURAL STUDY OF THE LYOTROPIC NEMATIC PHASE OF VANADIUM PENTOXIDE GELS [J].

DAVIDSON, P ;

BOURGAUX, C ;

SCHOUTTETEN, L ;

SERGOT, P ;

WILLIAMS, C ;

LIVAGE, J .

JOURNAL DE PHYSIQUE II, 1995, 5 (10) :1577-1596

[7]

DEGENNES PG, 1974, PHYSICS LIQUID CRYST

[8]

DEJEN WH, 1980, PHYSICAL PROPERTIES

[9] MAGNETIC-FIELD INDUCED ALIGNMENT AND INSTABILITIES IN ORDERED COLLOIDS OF TOBACCO MOSAIC-VIRUS [J].

FRADEN, S ;

HURD, AJ ;

MEYER, RB ;

CAHOON, M ;

CASPAR, DLD .

JOURNAL DE PHYSIQUE, 1985, 46 (C3) :85-113

[10]

Gabriel JCP, 2000, ADV MATER, V12, P9, DOI 10.1002/(SICI)1521-4095(200001)12:1<9::AID-ADMA9>3.0.CO

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