Shear-induced first-order sponge-to-lamellar transition in a lyotropic surfactant system.
We report a shear-induced sponge (L3) to lamellar (L(alpha)) transition in a surfactant system. Under a constant shear rate, after a delay time t(n) we observe random nucleation and subsequent growth of the L(alpha) phase, demonstrating that the shear-induced transition is first order. A simple argument for the energy of a two-dimensional nucleus accounts for the observed delay and its shear-rate dependence.
Léon
A
A
Laboratoire de Physique Statistique de l'ENS, 24 rue Lhomond, 75231 Paris CEDEX 05, France.
Bonn
D
D
Meunier
J
J
Al-Kahwaji
A
A
Kellay
H
H