Two-stage crystallization on the surface of smectic nanofilms |
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Authors: | P V Dolganov K I Belov V K Dolganov |
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Institution: | 1.Institute of Solid State Physics,Russian Academy of Sciences,Chernogolovka, Moscow region,Russia |
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Abstract: | The influence of the surface and finite size on crystallization in nanofilms of a smectic C liquid crystal with thicknesses between two and several tens of molecular layers has been studied. Transitions in a single
surface molecular layer have been detected by optical methods. It has been found that transitions on the film surface take
place at a temperature 8°C higher than the crystallization temperature in a bulk sample. Two-stage crystallization has been
detected in surface layers where the surface induces a transition to an intermediate structure different from the structure
of the phases of the bulk sample. |
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