Decay of spatially periodic patterns in a nematic liquid crystal.

Phys Rev E Stat Nonlin Soft Matter Phys 2004 Dec 23;70(6 Pt 1):061706. Epub 2004 Dec 23.

Research Institute for Solid State Physics and Optics, Hungarian Academy of Sciences, P.O. Box 49, H-1525 Budapest, Hungary.

A detailed theoretical and experimental analysis of the decay of electroconvection patterns is presented in a planarly aligned nematic liquid crystal. The relaxation time is measured as a function of the wave number of the pattern using a light diffraction technique. A theoretical analysis exhibits a rich structure of the dispersion curves for the decay rates. An interesting relation between the realistic case of no-slip boundary conditions and the simpler free-slip case is found. The experimentally determined relaxation rates for both "conductive" and "dielectric" initial patterns follow the theoretical solution with subsequent jumps between branches when the wave number is increased.

Download full-text PDF

Source
https://link.aps.org/doi/10.1103/PhysRevE.70.061706
Publisher Site
http://dx.doi.org/10.1103/PhysRevE.70.061706DOI Listing
December 2004
6 Reads

Publication Analysis

Top Keywords

liquid crystal
8
nematic liquid
8
wave number
8
diffraction technique
4
boundary conditions
4
light diffraction
4
technique theoretical
4
theoretical analysis
4
analysis exhibits
4
initial patterns
4
patterns follow
4
pattern light
4
case no-slip
4
theoretical solution
4
function wave
4
spatially periodic
4
follow theoretical
4
number pattern
4
exhibits rich
4
"dielectric" initial
4

References

(Supplied by CrossRef)

1996

1996

Appl. Opt. 1989

Appl. Opt. 1987

Similar Publications