Noncapillary-Wave Structure at the Water-Alkane Interface

Autor: Zhengqing Huang, Mark L. Schlossman, Aleksey M. Tikhonov, Dragoslav M. Mitrinovic, Ming Li
Rok vydání: 2000
Předmět:
Zdroj: Physical Review Letters. 85:582-585
ISSN: 1079-7114
0031-9007
DOI: 10.1103/physrevlett.85.582
Popis: Synchrotron x-ray reflectivity is used to study the interface between bulk water and bulk n-alkanes with carbon numbers 6 through 10, 12, 16, and 22. For all interfaces, except the water-hexane interface, the interfacial width disagrees with the prediction from capillary-wave theory. The variation of interfacial width with carbon number can be described by combining the capillary-wave prediction for the width with a contribution from intrinsic structure. This intrinsic structure is determined by the gyration radius for the shorter alkanes and by the bulk correlation length for the longer alkanes.
Databáze: OpenAIRE