Liquid/liquid dynamic phase separation induced by a focused laser

We found that a focused laser can generate microscopic phase separation in an oil/water system. An oil droplet emerges and grows at the focus of the laser in a water-rich homogeneous medium. In contrast, in an oil-rich homogeneous phase, water droplets spring out in a successive manner from the focu...

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Bibliographic Details
Published in:Applied physics letters 2003-09, Vol.83 (13), p.2557-2559
Main Authors: Mukai, Sada-Atsu, Magome, Nobuyuki, Kitahata, Hiroyuki, Yoshikawa, Kenichi
Format: Article
Language:English
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Summary:We found that a focused laser can generate microscopic phase separation in an oil/water system. An oil droplet emerges and grows at the focus of the laser in a water-rich homogeneous medium. In contrast, in an oil-rich homogeneous phase, water droplets spring out in a successive manner from the focus of the laser, move away, and disappear in the surroundings, forming a flower-like pattern. The mechanism of this dynamic phase separation is discussed under the framework of the mean field theory.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.1613795