摘要

Both nematic elastomers and nematic hydrogels are known to display striped patterns. In contrast to a large body of proposed models for nematic elastomers, few studies exist to interpret striping in nematic hydrogels. In this paper, a theoretical model based on free energy minimization is developed to simulate the drying-induced striping in a layer of nematic hydrogel bonded to a rigid substrate. The liquid crystalline polymers in the nematic hydrogel rotate by certain angles to form the striping in response to a drying environment. Moreover, the striping occurs only for a finite range of humidity, and the boundaries of this range can be tuned.

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