Direct layer-by-layer freezing transitions in free-standing smectic-a 14S5 films
Journal
Molecular Crystals and Liquid Crystals
Journal Volume
412
Pages
409/[2019]-416/[2026]
Date Issued
2004
Author(s)
Pan, T.-C.
Abstract
Electron diffraction and optical reflectivity have provided the direct confirmation of the existence of layer-by-layer surface transitions from the smectic-A immediately to the crystal-B phase in a liquid-crystal material, without going through an intermediate hexatic phase. The molecular interactions are found to be through retarded van der Waals forces. Our results suggest that a smectic-A film can transform into a crystal-B through three possible scenarios.
Type
conference paper