The tensor order parameter of a model nematic liquid crystal close to a rough surface has been analyzed by means of molecular dynamics simulations. We show that the rough surface induces a smectic C layering. Moving towards the bulk, the smectic order disappears and a depression in the uniaxial orientational order below its bulk value occurs, accompanied by a considerable biaxiality. Correspondingly, the director orientation undergoes a strong distortion localized within a few molecular lengths.
|Titolo:||Surface-induced order parameters profiles in a nematic liquid crystal from molecular dynamic simulations|
|Data di pubblicazione:||1997|
|Digital Object Identifier (DOI):||10.1080/10587259708041974|
|Appare nelle tipologie:||1.1 Articolo in rivista|
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