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The European Physical Journal B
ISSN: 1434-6028 (printed version)
ISSN: 1434-6036 (electronic version)
Abstract Volume 2 Issue 1 (1998) pp 93-99
Coalescence in 2 dimensions: experiments on thin copolymer films and numerical simulations
L. Berger (1), V.A. Raghunathan (1), C. Launay (1), D. Ausserré (1) (a), Y. Gallot (2)
(1) Université du Maine, BP 535, 72017 Le Mans Cedex, France
(2) Institut Charles Sadron, 6 rue Boussingault, 67083 Strasbourg Cedex, France
Received : 17 march 1997 / Revised : 11 september 1997 / Accepted : 2 december 1997
Abstract: This paper presents on one hand the experimental study of the coalescence kinetics of two closed bidimensional fluid domains at the surface of a multilayered dibloc copolymer film, and on the other hand a numerical simulation of the same evolution. The latter is based on "diffusive" phenomenological equations which are surface conservative and which neglect the 2-dimensional viscosity of the layers. The successive shapes observed in the experiments and obtained from the simulation are very close. It would not be the case if the 2D viscosity was significant.
PACS. 47.20.Ma Interfacial instability - 68.10.Jy Kinetics (evaporation, adsorption, condensation, catalysis, etc.) - 68.15.+e Liquid thin films
(a) email: ausserre@aviion.univ-lemans.fr
Online publication: April 21, 1998
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