Avtor/Urednik		Čepič, Mojca; Žekš, Boštjan; Mavri, Janez
Naslov		Structures of possible phases of achiral polar smectic liquid crystals formed by bow shaped molecules
Tip		članek
Vir		Mol Cryst Liq Cryst
Vol. in št.		Letnik 328
Leto izdaje		1999
Obseg		str. 47-56
Jezik		eng
Abstrakt		The state of order of achiral polar liquid crystals formed by bow shaped molecules is described by two two-dimensional order parameters, P and epsilon, giving the order of molecular dipoles and the tilt of the molecules, respectively. The free energy is written as an expansion in terms of both order parameters up to the sixth order and takes into account interactions between nearest neighbouring smectic layers. Three different antiferroelectric structures consistent with experimental observations are the result of the free energy minimization. An experiment to verify the suggested structures is proposed.
Deskriptorji		CRYSTALLIZATION MODELS, THEORETICAL THERMODYNAMICS