Physics – Condensed Matter – Materials Science
Scientific paper
2006-11-20
Journal of Chemical Physics 126, 6 (2007) 064902
Physics
Condensed Matter
Materials Science
Scientific paper
4-n-octyl-4-cyanobiphenyl (8CB) has been recently shown to display an unusual sequence of phases when confined into porous silicon (PSi). The gradual increase of oriented short-range smectic (SRS) correlations in place of a phase transition has been interpreted as a consequence of the anisotropic quenched disorder induced by confinement in PSi. Combining two quasielastic neutron scattering experiments with complementary energy resolutions, we present the first investigation of the individual molecular dynamics of this system. A large reduction of the molecular dynamics is observed in the confined liquid phase, as a direct consequence of the dynamical boundary conditions imposed by the confinement. Temperature fixed window scans (FWS) reveal a continuous 'glass-like' reduction of the molecular dynamics of the confined liquid and SRS phases on cooling down to 250 K, where a solid-like behavior is finally reached by a two steps crystallization process.
Béziel Wilfried
Frick Bernhard
Guégan Régis
Guendouz Mohammed
Lefort Ronan
No associations
LandOfFree
Molecular dynamics of a short range ordered smectic phase nanoconfined into porous silicon does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Molecular dynamics of a short range ordered smectic phase nanoconfined into porous silicon, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Molecular dynamics of a short range ordered smectic phase nanoconfined into porous silicon will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-120471