Abstract
Abstract We present a preliminary analysis of the results of our structural measurements on the influence of temperature variation on the orientation of smectic liquid crystal films deposited on photolithographed gratings on glass gratings. These gratings have periods of 10μm with depths ranging up to 2–3μm. We previously found that both silicon and glass gratings are able to align the liquid crystal along the grating direction for film thick-nesses above 15μm, in the grating period range 664nm–24μm, as determined by using both x-ray diffraction and optical microscopy. The size of the top layer and the grating period range are of the order of magnitude of the correlation length for the smectic liquid crystal film. In this study, the region just above the critical thickness in smA droplets was studied as a function of temperature beyond the smA - N transition. Special attention was given to the region of thickness around 40μm, a region where the competition between the air-liquid crystal interface and the ...
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