Tunable surface phases in alcohol-diol melts

被引：18

作者：

Gang, O ^{[1
]}

Ocko, BM

Wu, XZ

Sirota, EB

Deutsch, M

机构：

[1] Bar Ilan Univ, Dept Phys, IL-52900 Ramat Gan, Israel

[2] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA

[3] IBM Corp, Almaden Res Ctr, San Jose, CA 95120 USA

[4] ExxonMobil Res & Engn Co, Annandale, NJ 08801 USA

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 82卷 / 03期

关键词：

D O I：

10.1103/PhysRevLett.82.588

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Surface crystallization is studied in mixed alcohol-diol melts by x-ray diffraction and surface tensiometry. A reversible transition, having no bulk counterpart, from a bilayer to a monolayer surface phase, tunable by either diol concentration phi or temperature T, is observed. The molecular tilt is found to vary with phi in the bilayer phase. The structure of both surface phases is determined in detail. A simple theory, assuming a linearized phi dependence of the free energies of the various interfaces in each phase, accounts well for the observed (phi, T) phase diagram. [S0031-9007(98)08262-3].

引用

页码：588 / 591

页数：4

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