Elasticity and Viscosity of a Lyotropic Chromonic Nematic Studied with Dynamic Light Scattering

Details Elasticity and Viscosity of a Lyotropic Chromonic Nematic Studied with Dynamic Light Scattering Elasticity and Viscosity of a Lyotropic Chromonic Nematic Studied with Dynamic Light Scattering

2008-07-16

arxiv.org/abs/0807.2669v1

Physics

Condensed Matter

Soft Condensed Matter

4 pages, 3 figures, submitted to Phys.Rev.Lett

Scientific paper

Using dynamic light scattering, we measure for the first time the temperature-dependent elastic moduli and associated orientational viscosity coefficients of the nematic phase in a self-assembled lyotropic chromonic liquid crystal. The bend K3 and splay K1 moduli are an order of magnitude higher than the twist K2 constant. The ratio K3/K1 shows an anomalous increase with temperature; we attribute this to the shortening of the aggregates as temperature increases. The viscosity coefficients also show a significant anisotropy, as well as a strong temperature dependence; in particular, the bend viscosity is three orders of magnitude smaller than the splay and twist viscosities.

Affiliated with

Also associated with

No associations

Rating

Elasticity and Viscosity of a Lyotropic Chromonic Nematic Studied with Dynamic Light Scattering 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 Elasticity and Viscosity of a Lyotropic Chromonic Nematic Studied with Dynamic Light Scattering, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Elasticity and Viscosity of a Lyotropic Chromonic Nematic Studied with Dynamic Light Scattering will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-41838