The European Physical Journal E

, Volume 14, Issue 1, pp 91–96 | Cite as

Frustrated rotations in nematic monolayers



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.


Dust Delay Time Optical Axis Dust Particle Lateral Wall 
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    Y. Tabe, H. Yokoyama, Nat. Mater. 2, 806 (2003).CrossRefGoogle Scholar
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    Note that our anchoring energy depends on the cosine and not on cosine squared, because we are dealing with a ferronematic.Google Scholar
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Copyright information

© Springer-Verlag Berlin/Heidelberg 2004

Authors and Affiliations

  1. 1.Physique de la Matiére CondenséeCollége de FranceParisFrance

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