Document Detail


Dynamic light scattering as a probe of orientational dynamics in confined liquid crystals
MedLine Citation:
PMID:  11046445     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
The eigenmodes of director orientational fluctuations in nematic liquid crystals in confined geometries were studied both theoretically and experimentally by dynamic light-scattering tehnique. The fundamental mode of the orientational fluctuations shows a crossover from bulk behavior, dominated by bulk elastic constant K, to surface dominated one, in which the relaxation rate is determined by the ratio of surface anchoring strength W and viscosity eta. The contribution of surface viscosity zeta is also significant when its characteristic length zeta/eta becomes comparable to the size of the confined system. It was measured in nematic liquid crystal in cylindrical pores of polycarbonate (Nuclepore) membranes to be of the order of 10 nm.
Authors:
Mertelj; Copic
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Publication Detail:
Type:  JOURNAL ARTICLE    
Journal Detail:
Title:  Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics     Volume:  61     ISSN:  1063-651X     ISO Abbreviation:  Phys Rev E Stat Phys Plasmas Fluids Relat Interdiscip Topics     Publication Date:  2000 Feb 
Date Detail:
Created Date:  2000-11-08     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9887340     Medline TA:  Phys Rev E Stat Phys Plasmas Fluids Relat Interdiscip Topics     Country:  UNITED STATES    
Other Details:
Languages:  Eng     Pagination:  1622-8     Citation Subset:  -    
Affiliation:
Jozef Stefan Institute, Jamova 39, 1001 Ljubljana, Slovenia.
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