NONPARABOLIC DENDRITES OF A SMECTIC PHASE GROWING INTO A SUPERCOOLED NEMATIC

被引：13

作者：

BUKA, A

EBER, N

机构：

[1] KFKI Research Institute for Solid State Physics of the Hungarian Academy of Sciences, Budapest, H-1525

来源：

EUROPHYSICS LETTERS | 1993年 / 21卷 / 04期

关键词：

LIQUID CRYSTALS; PHYSICS OF CRYSTAL GROWTH; TRANSITIONS IN LIQUID CRYSTALS;

D O I：

10.1209/0295-5075/21/4/016

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The interface of a growing smectic phase in a supercooled nematic liquid crystal was studied. A change in the morphology and the side-branching activity was observed with the undercooling. Nonparabolic dendrites with faceted dissymmetric tips were found for small undercooling. The equilibrium shape of the smectic germ was a rectangle. A drifting of the smectic objects was observed. The starting tip velocities obey the scaling relation upsilon(s) is similar to DELTA4.

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页码：477 / 482

页数：6

相关论文

共 16 条

[1] PATTERN-FORMATION DURING MESOPHASE GROWTH IN LIQUID-CRYSTALS [J].

ARORA, S ;

BUKA, A ;

PALFFYMUHORAY, P ;

RACZ, Z ;

VORA, R .

EUROPHYSICS LETTERS, 1988, 7 (01) :43-47

[2] OBSERVATIONS OF CELLULAR AND DENDRITIC GROWTH OF A SMECTIC-B SMECTIC-A INTERFACE [J].

BECHHOEFER, J ;

OSWALD, P ;

LIBCHABER, A ;

GERMAIN, C .

PHYSICAL REVIEW A, 1988, 37 (05) :1691-1696

[3] DYNAMICS OF INTERFACIAL PATTERN-FORMATION [J].

BENJACOB, E ;

GOLDENFELD, N ;

LANGER, JS ;

SCHON, G .

PHYSICAL REVIEW LETTERS, 1983, 51 (21) :1930-1932

[4] THE FORMATION OF PATTERNS IN NONEQUILIBRIUM GROWTH [J].

BENJACOB, E ;

GARIK, P .

NATURE, 1990, 343 (6258) :523-530

[5] DENDRITIC SOLIDIFICATION OF KRYPTON AND XENON [J].

BILGRAM, JH ;

FIRMANN, M ;

HURLIMANN, E .

JOURNAL OF CRYSTAL GROWTH, 1989, 96 (01) :175-187

[6] KINETIC PHASE-DIAGRAM AND SCALING RELATIONS FOR STATIONARY DIFFUSIONAL GROWTH [J].

BRENER, E ;

MULLERKRUMBHAAR, H ;

TEMKIN, D .

EUROPHYSICS LETTERS, 1992, 17 (6BIS) :535-540

[7]

FOURNIER JB, 1991, J PHYS II, V1, P845, DOI 10.1051/jp2:1991113

[8] FUNDAMENTALS OF DENDRITIC SOLIDIFICATION .2. DEVELOPMENT OF SIDEBRANCH STRUCTURE [J].

HUANG, SC ;

GLICKSMAN, ME .

ACTA METALLURGICA, 1981, 29 (05) :717-734

[9] FUNDAMENTALS OF DENDRITIC SOLIDIFICATION .1. STEADY-STATE TIP GROWTH [J].

HUANG, SC ;

GLICKSMAN, ME .

ACTA METALLURGICA, 1981, 29 (05) :701-715

[10] PATTERN SELECTION IN FINGERED GROWTH PHENOMENA [J].

KESSLER, DA ;

KOPLIK, J ;

LEVINE, H .

ADVANCES IN PHYSICS, 1988, 37 (03) :255-339