Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/67539
Title: Rheology of highly aligned nematic liquid crystals
Authors: Chen, S.B. 
Koch, D.L.
Keywords: Liquid crystals
Nematic phases
Rheology
Issue Date: Apr-1997
Source: Chen, S.B.,Koch, D.L. (1997-04). Rheology of highly aligned nematic liquid crystals. Journal of Non-Newtonian Fluid Mechanics 69 (2-3) : 273-292. ScholarBank@NUS Repository.
Abstract: Highly aligned nematic phases arise in systems of charged rodlike molecules or in highly concentrated solutions of uncharged rods. A multivariate Gaussian distribution is used to represent the orientation distribution of the rods and obtain predictions for the structure and rheology of the nematic solution. In weak flows, the director tumbles in one of a set of paths similar to the Jeffery orbits of a rigid rod with an effective aspect ratio equal to the reciprocal of the angular spread of the orientation distribution. The director migrates slowly across the orbits. An analytical expression for the rate of migration in the limit of small rotary Peclet number is obtained. The director may spiral toward the vorticity axis or the flow-gradient plane of the simple shear flow depending on its initial orientation. As the angular spread of the rods decreases, the domain of attraction of the vorticity axis becomes small. © 1997 Elsevier Science B.V.
Source Title: Journal of Non-Newtonian Fluid Mechanics
URI: http://scholarbank.nus.edu.sg/handle/10635/67539
ISSN: 03770257
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

Page view(s)

39
checked on Dec 15, 2017

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.