Electro-optic response of cubic liquid crystal compounds in Kerr cell geometry

We present the results of our investigations on the electro-optic response of the cubic phase liquid crystal compounds 1,2-bis-[4-n-octyloxy-benzoyl]-hydrazine (BABH8) and 4'-n-hexadecyloxy-3'-nitrobiphenyl-4-carboxylic acid (ANBC16) in Kerr cell geometry. The AC electric field response in...

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Bibliographic Details
Published inLiquid crystals Vol. 35; no. 3; pp. 339 - 342
Main Authors Yoneya, Makoto, Takada, Shintarou, Maeda, Yoji, Yokoyama, Hiroshi
Format Journal Article
LanguageEnglish
Published Taylor & Francis 01.03.2008
Subjects
birfringence
blue phase
Kerr effects
optical isotropy
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Summary:We present the results of our investigations on the electro-optic response of the cubic phase liquid crystal compounds 1,2-bis-[4-n-octyloxy-benzoyl]-hydrazine (BABH8) and 4'-n-hexadecyloxy-3'-nitrobiphenyl-4-carboxylic acid (ANBC16) in Kerr cell geometry. The AC electric field response in the BABH8 cubic phase was found to be as small as that of the isotropic phase, even though there was a response in the adjacent smectic C (SmC) phase. The response in the SmC phase means that the BABH8 molecule itself has an electric field coupling ability, but this ability is strongly inactivated in the cubic phase. This inactivity to the AC fields was also found in the cubic phase of ANBC16. This behaviour could be explained by the small structural unit size of the cubic phase.
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ISSN:0267-8292
1366-5855
DOI:10.1080/02678290701862306