ELLIPSOMETRY STUDY OF 2D CRYSTALLIZATION OF 1-ALCOHOL MONOLAYERS AT THE WATER-SURFACE

被引：88

作者：

BERGE, B

RENAULT, A

机构：

[1] Laboratoire de Spectrométrie Physique, UA 08, Saint Martin d’Hères, Université Joseph Fourier

来源：

EUROPHYSICS LETTERS | 1993年 / 21卷 / 07期

关键词：

SURFACES AND INTERFACES; THIN FILMS AND WHISKERS; SURFACE ENERGY (SURFACE TENSION; INTERFACE TENSION; ANGLE OF CONTACT; ETC); SURFACE PHASE TRANSITIONS AND CRITICAL PHENOMENA;

D O I：

10.1209/0295-5075/21/7/010

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We investigate monolayers of 1-alcohols (C8 to C14) obtained by placing an excess of material on top of a clean water surface. The excess is collected in a lens which constitutes a reservoir of molecules for the monolayer. We observe a first-order transition (2D crystallization) with temperature. Ellipsometry measurements show a narrow transition in temperature with no measurable hysteresis corresponding to a jump of the monolayer thickness. For each sample, simultaneous surface tension measurements show a break of slope at the same transition temperature. Both below and above the transition we observe large positive coefficients for the temperature variation of the surface tension.

引用

页码：773 / 777

页数：5