Abstract.
Universal growth laws were examined experimentally for the transition from an isotropic melt to the liquid-crystalline state as well as the liquid-crystal (LC) to crystal transition for a system, which can be largely super-cooled. For large quench depths the growth exponent of the growth law L(t) ∼tn is given by n=1. On decreasing the quench depth, two phase-ordering processes can be resolved for the isotropic (Iso.)–LC transition, one with a decreasing growth exponent 1<n<1/2 and a long-time process with n=1, independent of quench depth. In the very vicinity of the transition, nucleus growth is described by a single process according to L(t) ∼t1/2. This behavior is interpreted in terms of an Iso. to blue-phase (BP) to cholesteric (N*) transition. The crystallization from the liquid-crystalline state (monotropic smectic A*) can be super-cooled substantially and follows a linear-growth process L(t)∼t.
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Received: 3 July 2000 / Accepted: 17 October 2000 / Published online: 10 January 2001
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Dierking, I. Universal growth laws in liquid crystals far from equilibrium . Appl Phys A 72, 307–310 (2001). https://doi.org/10.1007/s003390100732
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DOI: https://doi.org/10.1007/s003390100732