Spontaneous distortion of a nematic liquid crystal close to an interface

被引：12

作者：

Galatola, P ^{[1
]}

Oldano, C ^{[1
]}

Rajteri, M ^{[1
]}

Barbero, G ^{[1
]}

机构：

[1] IST NAZL FIS MAT, TURIN, ITALY

来源：

PHYSICS LETTERS A | 1996年 / 210卷 / 1-2期

关键词：

D O I：

10.1016/0375-9601(95)00896-9

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We theoretically analyze the orientation of a nematic liquid crystal close to an interface, by means of a semi-microscopic model, We find that long-range van der Waals interactions, depending on the orientation of the molecules with respect to their relative position, give rise to subsurface deformations on a molecular scale. This result is compared with the predictions of recently proposed elastic theories.

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收藏

页码：101 / 104

页数：4

相关论文

共 20 条

[1]

ALEXEIONESCU AL, 1994, PHYS LETT A, V190, P109

[2] POSSIBILITY OF A DEFORMED GROUND-STATE IN FREE STANDING NEMATIC FILMS [J].

BARBERO, G ;

MADHUSUDANA, NV ;

OLDANO, C .

JOURNAL DE PHYSIQUE, 1989, 50 (16) :2263-2275

[3] ON HIGHER-ORDER VARIATIONAL ANALYSIS IN ONE-DIMENSIONS AND 3-DIMENSIONS FOR SOFT BOUNDARIES [J].

DAHL, I ;

DEMEYERE, A .

LIQUID CRYSTALS, 1995, 18 (05) :683-692

[4] EFFECTS OF LONG-RANGE VANDERWAALS FORCES ON ANCHORING OF A NEMATIC FLUID AT AN INTERFACE [J].

DUBOISVIOLETTE, E ;

DEGENNES, PG .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 1976, 57 (03) :403-410

[5] LOCAL FREDERIKS TRANSITIONS NEAR A SOLID-NEMATIC INTERFACE [J].

DUBOISVIOLETTE, E ;

DEGENNES, PG .

JOURNAL DE PHYSIQUE LETTRES, 1975, 36 (10) :L255-L258

[6] RESUMMATION OF HIGHER-ORDER TERMS IN THE FREE-ENERGY DENSITY OF NEMATIC LIQUID-CRYSTALS [J].

FAETTI, S .

PHYSICAL REVIEW E, 1994, 49 (06) :5332-5344

[7] THEORY OF SURFACELIKE ELASTIC CONTRIBUTIONS IN NEMATIC LIQUID-CRYSTALS [J].

FAETTI, S .

PHYSICAL REVIEW E, 1994, 49 (05) :4192-4205

[8] Elastic anomalies at the interface between a nematic liquid crystal and its vapour. A microscopic approach [J].

Faetti, Sandro ;

Nobili, Maurizio .

Journal De Physique, II, 1994, 4 (09)

[9]

FIGEUREIDONETO MA, COMMUNICATION

[10] ON THE THEORY OF LIQUID CRYSTALS [J].

FRANK, FC .

DISCUSSIONS OF THE FARADAY SOCIETY, 1958, (25) :19-28