The helical structure of highly ordered smectic phases |
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| Authors: | Wojciech Kuczynski Horst Stegemeyer |
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| Institution: | 1. Institute of Physical Chemistry, University Paderborn , D-4790 , Paderborn , F. R. Germany;2. Institute of Molecular Physics, Polish Academy of Sciences , Smoluchowskiego 17/19, 60-179 , Poznan , Poland;3. Institute of Physical Chemistry, University Paderborn , D-4790 , Paderborn , F. R. Germany |
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| Abstract: | Optical studies of smectic phases have been performed in homogeneously oriented samples of chiral 4-(2′-methylbutyl) phenyl-4′-n-octylbiphenyl-4-carboxylate (CE8). The helix structure has been found in smectic phases C, I and J, but not in the smectic G phase. Two chiral phases have been found between SI* and SG phases. Up to now one of them has not been observed. The pitch of the helix has been measured in all of the twisted smectic phases, including the SJ* phase. The existence of the helix in this phase suggests that the correlations between smectic layers are not very strong. |
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