Electrohydrodynamic convection in nematics under stochastic excitation

被引：7

作者：

Amm, H

Behn, U

John, T

Stannarius, R

机构：

[1] Universität Leipzig, Fak. fur Physik/Geowissenschaften, Leipzig 04103

来源：

MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS | 1997年 / 304卷

关键词：

D O I：

10.1080/10587259708047004

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

We describe the influence of superimposed deterministic and stochastic electric fields on electrohydrodynamic convection in nematics. Multiplicative noise leads to complex spatio-temporally fluctuating patterns. We measure the thresholds for the onset of electroconvection, construct stability diagrams and compare the results to theoretical predictions.

引用

收藏

页码：525 / 530

页数：6

相关论文

共 21 条

[1] ELECTROHYDRODYNAMIC INSTABILITIES IN NEMATIC LIQUID-CRYSTALS DRIVEN BY A DICHOTOMOUS STOCHASTIC VOLTAGE [J].

BEHN, U ;

MULLER, R .

PHYSICS LETTERS A, 1985, 113 (02) :85-88

[2]

BEHN U, 1995, UNPUB PHYS REV E

[3] ON ELECTRICALLY DRIVEN PATTERN-FORMING INSTABILITIES IN PLANAR NEMATICS [J].

BODENSCHATZ, E ;

ZIMMERMANN, W ;

KRAMER, L .

JOURNAL DE PHYSIQUE, 1988, 49 (11) :1875-1899

[4] EXTERNAL NOISE CAN SUPPRESS THE ONSET OF SPATIAL TURBULENCE [J].

BRAND, HR ;

KAI, S ;

WAKABAYASHI, S .

PHYSICAL REVIEW LETTERS, 1985, 54 (06) :555-557

[5] HYDRODYNAMIC INSTABILITIES OF NEMATIC LIQUID CRYSTALS UNDERAC ELECTRIC FIELDS [J].

DUBOISVI.E ;

DEGENNES, PG ;

PARODI, O .

JOURNAL DE PHYSIQUE, 1971, 32 (04) :305-+

[6] CHARACTERIZATION OF ON-OFF INTERMITTENCY [J].

HEAGY, JF ;

PLATT, N ;

HAMMEL, SM .

PHYSICAL REVIEW E, 1994, 49 (02) :1140-1150

[7] EXPERIMENTAL-STUDY ON THRESHOLD SHIFTS AND STRUCTURE CHANGES DUE TO EXTERNAL MULTIPLICATIVE NOISE IN NEMATIC LIQUID-CRYSTAL [J].

KAI, S ;

FUKUNAGA, H ;

BRAND, HR .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1987, 56 (11) :3759-3762

[8] STRUCTURE CHANGES INDUCED BY EXTERNAL MULTIPLICATIVE NOISE IN THE ELECTROHYDRODYNAMIC INSTABILITY OF NEMATIC LIQUID-CRYSTALS [J].

KAI, S ;

FUKUNAGA, H ;

BRAND, HR .

JOURNAL OF STATISTICAL PHYSICS, 1989, 54 (5-6) :1133-1152

[9]

Kapustin A. P., 1965, KRISTALLOGRAFIYA, V10, P118

[10] CONVECTION INSTABILITIES IN NEMATIC LIQUID-CRYSTALS [J].

KRAMER, L ;

PESCH, W .

ANNUAL REVIEW OF FLUID MECHANICS, 1995, 27 :515-541