Author/Editor		Seppen, A; Muševič, I; Maret, G; Žekš, B; Wyder, P; Blinc, R
Title		Temperature dependence of the rotatory power in the SmC* phase of DOBAMBC
Type		članek
Source		J Phys France
Vol. and No.		Letnik 49
Publication year		1988
Volume		str. 1569-73
Language		eng
Abstract		High resolution measurements of the temperature dependence of the optical rotatory power P(T) in the SmC* phase of the ferroelectric liquid crystal DOBAMBC are presented. Special emphasis is on the region near the SmC*-SmA transition. These data together with measurements of the pitch allow for a determination of the molecular tilt angle in the helicoidal structure. This is believed to be the first optical measurement of the tilt in an unperturbed SmC* phase, i.e. without unwinding of the helix. The measurements of the tilt angle in this case are compared with those on the unwound structure and are briefly discussed in connection with theory.
Descriptors		CRYSTALLOGRAPHY THERMODYNAMICS