Nonlocal dynamics of spontaneous imbibition fronts

被引：51

作者：

Geromichalos, D ^{[1
]}

Mugele, F ^{[1
]}

Herminghaus, S ^{[1
]}

机构：

[1] Univ Ulm, Appl Phys Lab, D-89069 Ulm, Germany

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 89卷 / 10期

关键词：

D O I：

10.1103/PhysRevLett.89.104503

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have studied spontaneous imbibition fronts generated by capillary rise between two roughened glass plates, the separation d of which varied between 10 and 50 mum. Perfect agreement with Washburn's law was obtained. We have determined the roughness exponent chi of the fronts, and found chi=0.81+/-0.01 for small length scales. Above a certain crossover length xi, it reached chi=0.58+/-0.04, as predicted by the quenched noise Kardar-Parisi-Zhang equation. The crossover length is found to scale with the plate separation as rootd, as predicted by recent models which properly include nonlocal dynamics effects on the front. We believe this to be the first clear identification of crossover from nonlocal to local dynamics.

引用

页数：4

共 17 条

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