Casimir effect in fluids above the isotropic-lamellar transition

被引：16

作者：

Uchida, N ^{[1
]}

机构：

[1] Kyoto Univ, Dept Phys, Kyoto 606, Japan

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 87卷 / 21期

关键词：

D O I：

10.1103/PhysRevLett.87.216101

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study fluctuation-induced interaction in confined fluids above the isotropic-lamellar transition. At an ideally continuous transition, the disjoining pressure has the asymptotic form Pi (d --> proportional to) approximate to -Ck(B)Tq(0)(2)/d, where d is the interwall distance, q(0) is the wave number of the scattering peak, and C = 1/4 pi in the strong anchoring limit. The Iong-rangedness is enhanced due to continuous distribution of soft modes in the q space. An unconventionally strong Casimir force with a range of several lamella thicknesses is realistic above the transition. We also find an oscillatory force profile near a surface-induced transition.

引用

页码：216101 / 1

页数：4

共 34 条

[21]

Li H, 1991, PHYS REV LETT, V67, P3275

[22]

Mikheev L. V., 1989, Soviet Physics - JETP, V69, P358

[23] Wetting description of block copolymer thin films [J].