Deviations from linear theory for fluctuations below the supercritical primary bifurcation to electroconvection

Details Deviations from linear theory for fluctuations below the supercritical primary bifurcation to electroconvection Deviations from linear theory for fluctuations below the supercritical primary bifurcation to electroconvection

2000-05-05

arxiv.org/abs/cond-mat/0005100v1

Physics

Condensed Matter

4 pages, 5 figures, submitted to Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.85.3754

We report measurements of thermally-induced mean-square director-angle fluctuations below primary supercritical bifurcations to electroconvection of the nematic liquid crystals I52 and "Merck Phase V". For epsilon_mf = V^2/V_c,mf^2 - 1 < -0.1 (V is the amplitude of the applied alternating voltage) we find proportional to epsilon_mf^(-gamma) with gamma given by linear theory (LT). Closer to the bifurcation there are deviations from LT with a smaller gamma and with V_c^2 > V_c,mf^2. For I52 measurements as a function of the conductivity sigma of above V_c^2 suggest a tricritical bifurcation at sigma_t = 4.0 x 10^(-9) Omega^(-1)m^(-1), and (V_c^2 - V_c,mf^2)/V_c^2 increases strongly as sigma_t is approached from above.

Affiliated with

Also associated with

No associations

Rating

Deviations from linear theory for fluctuations below the supercritical primary bifurcation to electroconvection does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Deviations from linear theory for fluctuations below the supercritical primary bifurcation to electroconvection, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Deviations from linear theory for fluctuations below the supercritical primary bifurcation to electroconvection will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-440700