1.
Phys Rev Lett
; 84(9): 1934-7, 2000 Feb 28.
Article
in English
| MEDLINE
| ID: mdl-11017664
ABSTRACT
Elliptic shear applied to a homeotropically oriented nematic above the electric bend Freedericks transition (FT) generates slow precession of the director. The character of the accompanying nonlinear waves changes from diffusive phase waves to dispersive ones exhibiting spirals and spatiotemporal chaos as the FT is approached from above. An exact solution of the flow alignment equations captures the observed precession and predicts its reversal for non-flow-aligning materials. The FT transforms into a Hopf bifurcation opening the way to understand the wave phenomena.
2.
Phys Rev E Stat Phys Plasmas Fluids Relat Interdiscip Topics
; 53(5): 4925-4932, 1996 May.
Article
in English
| MEDLINE
| ID: mdl-9964821