Coexistence of an ordered anisotropic phase and a liquid expanded phase in an amphiphilic monolayer

H. Bercegol , F. Gallet , D. Langevin , J. Meunier

We present an experimental study of a phase transition in a monolayer made of fluorescent amphiphiles. We have combined measurement of surface tension isotherms, ellipsometry and observations by microscopy. We have observed an ordered anisotropic phase coexisting with a liquid phase. The ordered phase is made of elongated domains, whose growth and melting are briefly described.

Mots clés: ellipsometry; monolayers; organic compounds; phase equilibrium; solid liquid transformations; surface phase transformations; surface tension

Domaines: Articles anciens

H. Bercegol, F. Gallet, D. Langevin, J. Meunier. Coexistence of an ordered anisotropic phase and a liquid expanded phase in an amphiphilic monolayer. Journal de Physique, 1989, 50 (16), pp.2277-2289. ⟨10.1051/jphys:0198900500160227700⟩. ⟨jpa-00211059⟩