Determination of the translational order parameter for smectic liquid crystals using small-angle neutron scattering

G.G Alexander, R.M Richardson, S. M King, H. Zimmermann

Research output: Contribution to journalArticle (Academic Journal)

8 Citations (Scopus)

Abstract

A simple method to determine the translational order parameter of a smectic liquid crystal is presented. It is based on a measurement of the absolute intensity of the first-order layer reflection from an unaligned (powder) sample using small-angle neutron scattering. The Lorentz factor and molecular form factor are used to derive the order parameter from the intensity. The method is demonstrated for 4-octyl-4'-cyanobiphenyl (8CB), using two different isotopomers which give a consistent translational order parameter value of 0.5 in the smectic A phase.
Translated title of the contributionDetermination of the translational order parameter for smectic liquid crystals using small-angle neutron scattering
Original languageEnglish
Pages (from-to)961 - 968
Number of pages8
JournalLiquid Crystals
Volume37
Issue number6-7
DOIs
Publication statusPublished - Jun 2010

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