Spatiotemporal chaos in electroconvection of a homeotropically aligned nematic liquid crystal.

@article{Zhou2006SpatiotemporalCI,
  title={Spatiotemporal chaos in electroconvection of a homeotropically aligned nematic liquid crystal.},
  author={Sheng-Qi Zhou and Guenter Ahlers},
  journal={Physical review. E, Statistical, nonlinear, and soft matter physics},
  year={2006},
  volume={74 4 Pt 2},
  pages={
          046212
        }
}
We present patterns of electroconvection (EC) for the homeotropically aligned nematic liquid crystal MBBA. A voltage V = square root of 2V0 sin(2pift) was applied. With increasing V0, the bend Freedericksz transition at VF was followed by the onset of EC at Vc > VF. We found four distinct pattern types. First, a primary supercritical Hopf bifurcation to traveling waves (TW's) of convection rolls occurred. The structure factor S(k) of this state reflected the azimuthal anisotropy of the… CONTINUE READING