Self-assembly of biaxial ordering and molecular tilt angle of chiral smectic liquid crystals in hometropically aligned cells investigated using Fourier transform infrared spectroscopy
Citation:
R. Korlacki, A. Fukuda, A. Kocot, V. Gortz, M. Hird, and J. W. Goodby 'Self-assembly of biaxial ordering and molecular tilt angle of chiral smectic liquid crystals in hometropically aligned cells investigated using Fourier transform infrared spectroscopy' in Physical Review E, 72, 2005, pp. 1-9.Download Item:
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Abstract:
Temperature dependences of the infrared absorbance have been measured for the four chiral liquid crystal
samples in the homeotropic cell configuration. It is shown that the values of the orientational order parameter
S obtained using this method exhibit a remarkable similarity to the x-ray diffraction results of the smectic layer
spacing and lead to accurate values of the molecular tilt angle. This has important consequences for the
existing interpretation of the x-ray data. The proposed method, in many cases, may be considered as a valuable
alternative to the x-ray diffraction, giving additional, important information about the orientations and the
ordering of the molecular fragments. It is found that if the experimentally obtained order parameter is low, then
the molecular biaxiality is exceptionally large. The average phenyl ring plane is found to lie close to the
molecular tilt plane.
Sponsor
Grant Number
Science Foundation Ireland
Author's Homepage:
http://people.tcd.ie/jvijDescription:
PUBLISHED
Author: FUKUDA, ATSUO; VIJ, JAGDISH KUMAR
Publisher:
American Physics SocietyType of material:
Journal ArticleSeries/Report no:
72Availability:
Full text availableKeywords:
Electronic & Electrical EngineeringISSN:
34701Licences: