Thermal fluctuations of freely suspended smectic-A films from mesoscopic to molecular length scales

被引：31

作者：

Mol, EAL ^{[1
]}

Wong, GCL ^{[1
]}

Petit, JM ^{[1
]}

Rieutord, F ^{[1
]}

deJeu, WH ^{[1
]}

机构：

[1] UNIV GRENOBLE 1, CEA,CNRS,UMR 585, DEPT RECH FONDEMANTALE MATIERE CONDENSEE, F-38054 GRENOBLE, FRANCE

来源：

PHYSICAL REVIEW LETTERS | 1997年 / 79卷 / 18期

关键词：

D O I：

10.1103/PhysRevLett.79.3439

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The thermal fluctuations of freely suspended smectic-A films have been studied with diffuse x-ray scattering. Using a (2 + 2) scattering geometry at a synchrotron source the spectral dependence of the displacement-displacement correlation function has been determined from mesoscopic to molecular dimensions. At long in-plane length scales the fluctuations of the smectic layers were found to be conformal; i.e., all layers of the film fluctuated in unison. At decreasing length scales conformality was progressively lost, starting between the top and bottom layers of the film.

引用

页码：3439 / 3442

页数：4

共 29 条

[1] CRITICAL-BEHAVIOR OF THE LAYER COMPRESSIONAL ELASTIC CONSTANT-B AT THE SMECTIC-A NEMATIC PHASE-TRANSITION [J].