Frustrated Rotations in Nematic Monolayers

Details Frustrated Rotations in Nematic Monolayers Frustrated Rotations in Nematic Monolayers

2004-04-12

arxiv.org/abs/cond-mat/0404259v1

Eur. Phys. J. E 14, 91 (2004).

Physics

Condensed Matter

Soft Condensed Matter

5 pages, 4 figures, submitted to Eur. Phys. J. E

Scientific paper

10.1140/epje/i2004-10010-8

Tabe and Yokoyama found recently that the optical axis in a chiral monolayer of a ferronematic rotates when water evaporates from the bath: the chiral molecules act as propellers. When the axis is blocked at the lateral walls of the trough, the accumulated rotation inside creates huge splays and bends. We discuss the relaxation of these tensions, assuming that a single dust particle nucleates disclination pairs. For the simplest geometry, we then predict a long delay time followed by a non-periodic sequence of ``bursts''. These ideas are checked by numerical simulations.

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