Bistable defect structures in blue phase devices

Details Bistable defect structures in blue phase devices Bistable defect structures in blue phase devices

2011-10-28

arxiv.org/abs/1110.6394v1

Physics

Condensed Matter

Soft Condensed Matter

4 pages, 3 figures. Accepted for publication in Phys. Rev. Lett

Scientific paper

Blue phases (BPs) are liquid crystals made up by networks of defects, or disclination lines. While existing phase diagrams show a striking variety of competing metastable topologies for these networks, very little is known as to how to kinetically reach a target structure, or how to switch from one to the other, which is of paramount importance for devices. We theoretically identify two confined blue phase I systems in which by applying an appropriate series of electric field it is possible to select one of two bistable defect patterns. Our results may be used to realise new generation and fast switching energy-saving bistable devices in ultrathin surface treated BPI wafers.

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