Abstract
We present a first quantitative evaluation of the anisotropy of the temporal development of liquid crystal SmA bâtonnets, formed during temperature quench experiments from the isotropic melt, in terms of universal scaling laws for nucleus growth. Experimental investigations were carried out as a function of quench depth and universal growth laws of the form L( t)∼ t n are confirmed to show the theoretically expected change from n=1/2 for vanishing quench depth towards n=1 for increasing super-cooling. Despite the fact that the smectic bâtonnet nuclei exhibit a pronounced anisotropy in their growth behaviour of approximately 4:1, it is demonstrated that nucleus growth follows the same universal scaling laws for both principal growth directions. This behaviour is shown to be greatly independent of nucleus orientation with respect to the imposed preferred direction by unidirectional boundary conditions.
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