Avtor/Urednik		Rovšek, Barbara; Čepič, Mojca; Žekš, Bojštjan
Naslov		Surface transitions in free standing films of antiferroelectric liquid crystals within the discrete phenomenological model
Tip		članek
Vir		Mol Cryst Liq Cryst
Vol. in št.		Letnik 329
Leto izdaje		1999
Obseg		str. 365-73
Jezik		eng
Abstrakt		Within the discrete phenomenological model of antiferroelectric liquid crystals we study phase transitions in free standing films. Commonly observed rise as well as recently reported lowering of the temperature of the transition from the SmA to the tilted phase, compared to the bulk transition temperature, can be explained in view of the excess surface order in the first case or missing inter-layer interactions at the surfaces in the second case. We also expose the possibility of forming non-planar SmCalpha phase in a narrow temperature region near the bulk SmA - SmC transition temperature, although the particular compound exhibits only SmA and SmC (or SmC*, if chiral) phases in the bulk sample.
Deskriptorji		CRYSTALLIZATION TEMPERATURE MODELS, THEORETICAL