Document Detail


Annihilation dynamics of umbilical defects in nematic liquid crystals under applied electric fields.
MedLine Citation:
PMID:  16089754     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
Umbilical defects were induced in a nematic liquid crystal with negative dielectric anisotropy, confined to Hele-Shaw cells with homeotropic boundary conditions, and their annihilation dynamics were investigated experimentally. Dynamic scaling laws, previously proposed for Schlieren defects, were verified also for electric field induced umbilical defects while varying external parameters, such as electric field amplitude, frequency, Hele-Shaw cell gap, and temperature. In all cases, scaling relations of rho(t) proportional to t(-1) for the defect density and D proportional to (t(0) - t)(1/2) for the defect pair separation were obtained, independent of external field parameters. The experimental results give evidence of the universality of scaling relations for the annihilation of topological defects in liquid crystals, extended to umbilical defects and their annihilation dynamics under applied external fields.
Authors:
I Dierking; O Marshall; J Wright; N Bulleid
Related Documents :
20382974 - In situ electric fields causing electro-stimulation from conductor contact of charged h...
573644 - Polarized fluorescence in an electric field: comparison with other electrooptical effec...
15624184 - A one-dimensional transient model of electrical field flow fractionation.
22275564 - On the development of a walking rehabilitation device with a large workspace.
23448164 - Nanomechanics of lipid encapsulated microbubbles with functional coatings.
19724594 - Polymer parallel optical waveguide with graded-index rectangular cores and its dispersi...
Publication Detail:
Type:  Journal Article     Date:  2005-06-28
Journal Detail:
Title:  Physical review. E, Statistical, nonlinear, and soft matter physics     Volume:  71     ISSN:  1539-3755     ISO Abbreviation:  Phys Rev E Stat Nonlin Soft Matter Phys     Publication Date:  2005 Jun 
Date Detail:
Created Date:  2005-08-10     Completed Date:  2005-11-15     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101136452     Medline TA:  Phys Rev E Stat Nonlin Soft Matter Phys     Country:  United States    
Other Details:
Languages:  eng     Pagination:  061709     Citation Subset:  -    
Affiliation:
School of Physics and Astronomy, University of Manchester, Schuster Building, Oxford Road, Manchester M13 9PL, United Kingdom. ingo.dierking@manchester.ac.uk
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Defect modes in a stacked structure of chiral photonic crystals.
Next Document:  Pattern formation in thin polystyrene films induced by an enhanced mobility in ambient air.