Entropically driven reentrant SmC-SmA-SmC phase transition in composite polymer--liquid crystal systems
Abstract
I consider the effects of polymers on the smectic phase of a host liquid crystal matrix. Focusing on the regime in which the polymers are predominately confined between the smectic layers, I find that the presence of the polymers can lead to a reentrant phase diagram with the smectic-C sandwiching the smectic-A phase from both the high and low temperature sides. Simple entropy-energy arguments predict the shape of the reentrant phase boundary.
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