SIZE AND SURFACE EFFECT IN NEMATIC-ISOTROPIC PHASE-TRANSITION OF A LIQUID-CRYSTAL

被引：10

作者：

BARBERO, G ^{[1
]}

MIRALDI, E ^{[1
]}

STEPANESCU, A ^{[1
]}

机构：

[1] POLITECN TORINO, CISM, INFM, I-10129 TURIN, ITALY

来源：

JOURNAL OF APPLIED PHYSICS | 1990年 / 68卷 / 05期

关键词：

D O I：

10.1063/1.346558

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The size and surface effects on the nematic-isotropic phase transition of a liquid crystal are analyzed using a functional form of the surface energy proportional to the square of the scalar order parameter. The evaluated temperature shift agrees with the published experimental observations. This form seems confirmed by experimental data of the anchoring energy versus temperature, determined by means of the Freedericksz technique. The obtained formula for the temperature shift is similar to the well-known Thomson formula, usually considered in the classical phase transitions.

引用

页码：2063 / 2067

页数：5

共 33 条

[1]

ALIEV FM, 1989, ZH EKSP TEOR FIZ, V68, P70

[2] LANDAU THEORY OF WALL-INDUCED PHASE NUCLEATION AND PRETRANSITIONAL BIREFRINGENCE AT THE ISOTROPIC-NEMATIC TRANSITION [J].

ALLENDER, DW ;

HENDERSON, GL ;

JOHNSON, DL .

PHYSICAL REVIEW A, 1981, 24 (02) :1086-1089

[3] SIZE AND SURFACE EFFECTS ON PHASE-TRANSITIONS [J].

ARMITAGE, D ;

PRICE, FP .

CHEMICAL PHYSICS LETTERS, 1976, 44 (02) :305-308

[4] ON THE SURFACE BEHAVIOR OF A HOMEOTROPIC NEMATIC-LIQUID-CRYSTAL CELL [J].

BARBERO, G ;

STRIGAZZI, A .

NUOVO CIMENTO DELLA SOCIETA ITALIANA DI FISICA B-GENERAL PHYSICS RELATIVITY ASTRONOMY AND MATHEMATICAL PHYSICS AND METHODS, 1981, 64 (01) :101-110

[5] DERIVATIVE-DEPENDENT SURFACE-ENERGY TERMS IN NEMATIC LIQUID-CRYSTALS [J].

BARBERO, G ;

OLDANO, C .

NUOVO CIMENTO DELLA SOCIETA ITALIANA DI FISICA D-CONDENSED MATTER ATOMIC MOLECULAR AND CHEMICAL PHYSICS FLUIDS PLASMAS BIOPHYSICS, 1985, 6 (05) :479-493

[6] ON THE VALIDITY OF THE RAPINI-PAPOULAR SURFACE ANCHORING ENERGY FORM IN NEMATIC LIQUID-CRYSTALS [J].

BARBERO, G ;

DURAND, G .

JOURNAL DE PHYSIQUE, 1986, 47 (12) :2129-2134

[7]

BARBERO G, UNPUB

[8] CRITICAL-POINT WETTING [J].

CAHN, JW .

JOURNAL OF CHEMICAL PHYSICS, 1977, 66 (08) :3667-3672

[9] STRUCTURAL TRANSITION AT THE FREE-SURFACE OF THE NEMATIC LIQUID-CRYSTALS MBBA AND EBBA [J].

CHIARELLI, P ;

FAETTI, S ;

FRONZONI, L .

JOURNAL DE PHYSIQUE, 1983, 44 (09) :1061-1067

[10] CRITICAL-BEHAVIOR OF THE ANCHORING ENERGY OF THE DIRECTOR AT THE FREE-SURFACE OF A NEMATIC LIQUID-CRYSTAL [J].

CHIARELLI, P ;

FAETTI, S ;

FRONZONI, L .

PHYSICS LETTERS A, 1984, 101 (01) :31-34

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