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首页> 外文期刊>Berichte der Bunsengesellschaft fur Physikalische Chemie >Communications: Surface Order Effects on the Dynamics In Thin Free Standing Films Of Smectic Liquid Crystals
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Communications: Surface Order Effects on the Dynamics In Thin Free Standing Films Of Smectic Liquid Crystals

机译:通讯:表面层效应对近晶液晶自由站立薄膜的动力学影响

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摘要

The Goldstone mode has been measured in a homeotropically oriented ferroelectric liquid crystal in SSFLC cells and in free standing films by means of optical reflectivity. In cells the Goldstone mode was found only in the smectic C~* phase as expected. In the free standing films, however, the Goldstone mode was still detectable several degrees above the bulk phase transition temperature to the smectic a phase. This effect is due to a molecular tilt in boundary layers of the smectic A film caused by surface ordering.
机译:借助光反射率,已经在SSFLC单元中的垂直取向铁电液晶中和在独立膜中测量了Goldstone模式。在细胞中,按预期,仅在近晶C〜*相中发现了Goldstone模式。然而,在独立式薄膜中,仍可检测到比本体相转变为近晶相的温度高数度的戈德斯通模式。该效果是由于表面有序化导致近晶A膜的边界层中的分子倾斜。

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