Coherent soft-X-ray dynamic light scattering from smectic-A films

被引：68

作者：

Price, AC ^{[1
]}

Sorensen, LB

Kevan, SD

Toner, J

Poniewierski, A

Holyst, R

机构：

[1] Univ Washington, Dept Phys, Seattle, WA 98195 USA

[2] Univ Oregon, Dept Phys, Eugene, OR 97403 USA

[3] Polish Acad Sci, Inst Phys Chem, Warsaw, Poland

[4] Polish Acad Sci, Coll Sci, Warsaw, Poland

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 82卷 / 04期

关键词：

D O I：

10.1103/PhysRevLett.82.755

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have used coherent soft-x-ray dynamic light scattering at the Bragg peak to measure the thermally driven layer fluctuations in freely suspended films of five different smectic-A liquid crystals: 40.8, 70.7, 8CB, 80CB, and 100CB. The measured relaxation times at a scattering wave vector corresponding to the interlayer spacing (2 pi q(-1) approximate to 30 Angstrom) ranged from 2 to 60 mu s for films from 4 to 50 mu m thick. Thus, we have achieved the same time resolution as conventional laser dynamic light scattering, but with 100 times higher spatial resolution.

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页码：755 / 758

页数：4

相关论文

共 15 条

[1] EXPERIMENTAL-OBSERVATION OF ANOMALOUS ORDERING IN A LANDAU-PEIERLS SYSTEM [J].

ALSNIELSEN, J ;

BIRGENEAU, RJ ;

KAPLAN, M ;

LITSTER, JD ;

SAFINYA, CR .

PHYSICAL REVIEW LETTERS, 1977, 39 (26) :1668-1671

[2] OBSERVATION OF ALGEBRAIC DECAY OF POSITIONAL ORDER IN A SMECTIC LIQUID-CRYSTAL [J].

ALSNIELSEN, J ;

LITSTER, JD ;

BIRGENEAU, RJ ;

KAPLAN, M ;

SAFINYA, CR ;

LINDEGAARDANDERSEN, A ;

MATHIESEN, S .

PHYSICAL REVIEW B, 1980, 22 (01) :312-320

[3] FREQUENCY BEHAVIOR OF THE 2ND-SOUND DAMPING IN THE SMECTIC-A PHASE OF OCTYLCYANOBIPHENYL - EVIDENCE FOR THE DIVERGENCE OF VISCOSITIES [J].

BAUMANN, C ;

MARCEROU, JP ;

PROST, J ;

ROUILLON, JC .

PHYSICAL REVIEW LETTERS, 1985, 54 (12) :1268-1270

[4] X-RAY-INTENSITY FLUCTUATION SPECTROSCOPY OBSERVATIONS OF CRITICAL-DYNAMICS IN FE3AL [J].

BRAUER, S ;

STEPHENSON, GB ;

SUTTON, M ;

BRUNING, R ;

DUFRESNE, E ;

MOCHRIE, SGJ ;

GRUBEL, G ;

ALSNIELSEN, J ;

ABERNATHY, DL .

PHYSICAL REVIEW LETTERS, 1995, 74 (11) :2010-2013

[5]

CAILLE A, 1972, CR ACAD SCI B PHYS, V274, P891

[6] X-RAY PHOTON-CORRELATION SPECTROSCOPY STUDY OF BROWNIAN-MOTION OF GOLD COLLOIDS IN GLYCEROL [J].

DIERKER, SB ;

PINDAK, R ;

FLEMING, RM ;

ROBINSON, IK ;

BERMAN, L .

PHYSICAL REVIEW LETTERS, 1995, 75 (03) :449-452

[7] BRIGHTNESS, COHERENCE AND PROPAGATION CHARACTERISTICS OF SYNCHROTRON RADIATION [J].

KIM, KJ .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1986, 246 (1-3) :71-76

[8]

MACH P, 1995, J PHYS II, V5, P217, DOI 10.1051/jp2:1995124

[9] Dynamics of block copolymer micelles revealed by x-ray intensity fluctuation spectroscopy [J].

Mochrie, SGJ ;

Mayes, AM ;

Sandy, AR ;

Sutton, M ;

Brauer, S ;

Stephenson, GB ;

Abernathy, DL ;

Grubel, G .

PHYSICAL REVIEW LETTERS, 1997, 78 (07) :1275-1278

[10] MODEL OF COUPLING BETWEEN DEFECTS AND FLOW PARALLEL TO THE LAYERS IN A SMECTIC-A [J].

OSWALD, P .

JOURNAL DE PHYSIQUE, 1986, 47 (06) :1091-1096