Volume 36, Number 2, October II 1996
|Page(s)||123 - 128|
|Section||Condensed matter: structure, thermal and mechanical properties|
|Published online||01 September 2002|
Convection patterns on the liquid-liquid interface of a phase-separated binary mixture
Institute of Physics, Academia Sinica, Nankang Taipei,
Taiwan 11529, ROC
2 Department of Physics, National Taiwan University, Taipei, Taiwan 10764, ROC
Accepted: 29 August 1996
Propagating surface deformation in the form of a ring is observed on the liquid-liquid interface of a phase-separated binary mixture in a cylindrical cell after a temperature quench close to the critical point. It is found that the ring is produced by the convection currents induced by the temperature quench and it expands with a nearly constant velocity of the order of 10 mm/s. A peculiar feature of this characteristic velocity is that it is relatively insensitive to experimental parameters and probably governed by the bulk properties of the system alone.
PACS: 68.10.-m – Fluid surfaces and fluid-fluid interfaces / 05.70.Jk – Critical point phenomena / 47.27.Te – Convection and heat transfer
© EDP Sciences, 1996
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