Physics from the University Paris 6. 26
October 2004. Title: Inertial
and Dewetting: Triplons, Vibrated puddles, Shocks waves
Research advisor : Prof. Francoise
Physico-Chimie Curie, Institut Curie, Paris.
version (In french): Chapter
1, 2 (1.0 Mo),
3 (1.2 Mo), Chapter
4 (1.6 Mo), Chapter
5 (1.3 Mo).
a complete version with links, see the
multidisciplinary thesis server:
TEL / CCSD - CNRS
studied the statics and the dynamics of a floating triple line. We have
build a triple line tensiometer by measuring the force exerted by the
line when we pull on it. We measure the dispersion relation associated
to the waves propagating along this line ("Triplons" ).
We have then studied water puddle deposited
Above a first threshold in amplitude, we observe the
depinning of the line and the radius of the puddle starts to
oscillates. Above a second threshold, we observe an instability of the
contour at frequency fe/2,
parametrically excited by the
the drop radius.
We have finally studied the fast dewetting of a water film
floating on a non miscible liquid substrate, denser and non miscible.
We have measured the dewetting velocity V versus the film thickness e.
When V is larger than the velocity of surface waves, we observe a
cascade of shocks propagating ahead or behind the rim collecting the
Mme Anne Marie Cazabat (President)
Mme Elisabeth Charlaix (Referee)
Mme Michèle Adler (Referee)
M. Yves Couder
M. Jean-Pierre Hulin
Mme Françoise Brochard-Wyart (Advisor)