Structure and relaxation processes of an anisotropic molecular fluid confined into 1D nanochannels

Ronan Lefort (1) , Denis Morineau (1) , Régis Guégan (1) , Alain Moréac (1) , Claude Ecolivet (1) , Mohammed Guendouz (2)

1 GMCM - Groupe matière condensée et matériaux
2 FOTON - Fonctions Optiques pour les Technologies de l'informatiON

Structural order parameters of a smectic liquid crystal confined into the columnar form of porous silicon are studied using neutron scattering and optical spectroscopic techniques. It is shown that both the translational and orientational anisotropic properties of the confined phase strongly couple to the one-dimensional character of the porous silicon matrix. The influence of this confinement induced anisotropic local structure on the molecular reorientations occuring in the picosecond timescale is discussed.

Mots clés: Physical Sciences

Domaines: Matériaux

Ronan Lefort, Denis Morineau, Régis Guégan, Alain Moréac, Claude Ecolivet, et al.. Structure and relaxation processes of an anisotropic molecular fluid confined into 1D nanochannels. Philosophical Magazine, 2007, 87 (3-5), pp.469-476. ⟨10.1080/14786430600949614⟩. ⟨hal-00513762⟩