Pitch measurements on chiral smectic liquid crystals in the C*, Ca* and Cγ* phases

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Chalmers Univ of Technology, Goteborg, Sweden [1 ]
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Ferroelectrics | / 1 -4 pt 1卷 / 187-194期
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Ferroelectric materials - Ferroelectricity - Films - Glass - Measurements - Models - Molecules - Multilayers - Polarization - Surfaces;
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摘要：
The pitch and handedness of the helix have been measured in three substances possessing the helical C*, Cγ* and Ca* phases. A comparison between measurements on free-standing films and conventional samples between glass plates is made, showing a smearing-out influence from the glass surfaces in the second case. Hence the free-standing film gives a closer approximation to the intrinsic bulk property.
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