Electric Nusselt number characterization of electroconvection in nematic liquid crystals
نویسندگان
چکیده
منابع مشابه
Origin of traveling rolls in electroconvection of nematic liquid crystals.
Electroconvection in nematic liquid crystals exhibits a Hopf bifurcation to traveling rolls for a wide parameter range. The model normally used to describe electroconvection fails to predict this. A recent theoretical extension, the weak-electrolyte model, incorporates the dissociation-recombination reaction of the ionic dopant in the sample and does predict a Hopf bifurcation for a range of pa...
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For many years it has been commonly accepted that electroconvection (EC) as primary instability in nematic liquid crystals for the "classical" planar geometry requires a positive anisotropy of the electric conductivity, sigma(a), and a slightly negative dielectric anisotropy, epsilon(a). This firm belief was supported by many experimental and theoretical studies. Recent experiments, which have ...
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ژورنال
عنوان ژورنال: The European Physical Journal B
سال: 2002
ISSN: 1434-6028
DOI: 10.1140/epjb/e20020121