Early stage kinetics of phase-separating liquid mixtures

被引:11
作者
Buil, S [1 ]
Delville, JP [1 ]
Ducasse, A [1 ]
机构
[1] Univ Bordeaux 1, Ctr Phys Mol Opt & Hertzienne, CNRS, UMR 5798, F-33405 Talence, France
关键词
D O I
10.1103/PhysRevLett.82.1895
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Observation of the very early stage of phase separation is made difficult by the large number of nucleated domains and the polydispersity of the droplet distribution. We investigate this issue using laser waves to locally quench a liquid mixture with two intersecting pump beams whose interference pattern traps the nuclei on the fringes. The time-resolved reflectivity of a third probe wave on the induced droplet grating (i) confirms that nucleation is heterogeneous even in the bulk, and (ii) surprisingly shows that impurities lead to an unexpected reduction of the growth onto a single "medium-dependent master curve" when samples are synthesized with the same lots of constituents. [S0031-9007(99)08577-4].
引用
收藏
页码:1895 / 1898
页数:4
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