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PRODID:IEEE vTools.Events//EN
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DTSTAMP:20110331T093923Z
UID:EE509873-E5B6-11E7-833E-0050568D7F66
DTSTART;TZID=Etc/GMT+5:20110314T140000
DTEND;TZID=Etc/GMT+5:20110314T160000
DESCRIPTION:Electrohydrodynamic convection (EHC) in nematic liquid crystals
  is a crucial model system for the study of spontaneous\, non-equilibrium 
 pattern formation in anisotropic systems. To characterize the EHC patterns
 \, I have utilized a sample: 4-ethyl-2-fluoro-4’-[2-(trans-4-n-pent
 ylcyclohexyl)-ethyl]-biphenyl (I52) having negative dielectric anisotropy\
 , filled in standard planar cell geometry. When electric field is applied\
 , over certain range of the conductivity\, the initial transition (supercr
 itical Hopf bifurcation) leads to counter-propagating zig and zag rolls. T
 he patterns were analyzed by two-wave and four-wave demodulation technique
 . Alternating waves and spatiotemporal chaos states are confirmed for diff
 erent sets of parameters. Localized states called ‘worms’ are
  in existence at higher frequencies in the conduction regime.\n\n
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ORGANIZER:
SEQUENCE:0
SUMMARY:[Legacy Report] Electro -convective Patterns in Liquid Crystal
URL;VALUE=URI:https://events.vtools.ieee.org/m/61133
X-ALT-DESC:Description: <br />Electrohydrodynamic convection (EHC) in nemat
 ic liquid crystals is a crucial model system for the study of spontaneous\
 , non-equilibrium pattern formation in anisotropic systems. To characteriz
 e the EHC patterns\, I have utilized a sample: 4-ethyl-2-fluoro-4’-
 [2-(trans-4-n-pentylcyclohexyl)-ethyl]-biphenyl (I52) having negative diel
 ectric anisotropy\, filled in standard planar cell geometry.\n\n \n\nWhen 
 electric field is applied\, over certain range of the conductivity\, the i
 nitial transition (supercritical Hopf bifurcation) leads to counter-propag
 ating zig and zag rolls. The patterns were analyzed by two-wave and four-w
 ave demodulation technique. Alternating waves and spatiotemporal chaos sta
 tes are confirmed for different sets of parameters. Localized states calle
 d ‘worms’ are in existence at higher frequencies in the condu
 ction regime.
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