Interaction and flocculation of spherical colloids wetted by a surface-induced corona of paranematic order

Details Interaction and flocculation of spherical colloids wetted by a surface-induced corona of paranematic order Interaction and flocculation of spherical colloids wetted by a surface-induced corona of paranematic order

2003-01-15

arxiv.org/abs/cond-mat/0301256v1

Physics

Condensed Matter

Soft Condensed Matter

Revtex v4.0, 16 pages, 12 Postscript figures. Accepted for publication in Phys. Rev. E

Scientific paper

10.1103/PhysRevE.67.031404

Particles dispersed in a liquid crystal above the nematic-isotropic phase transition are wetted by a surface-induced corona of paranematic order. Such coronas give rise to pronounced two-particle interactions. In this article, we report details on the analytical and numerical study of these interactions published recently [Phys. Rev. Lett. 86, 3915 (2001)]. We especially demonstrate how for large particle separations the asymptotic form of a Yukawa potential arises. We show that the Yukawa potential is a surprisingly good description for the two-particle interactions down to distances of the order of the nematic coherence length. Based on this fact, we extend earlier studies on a temperature induced flocculation transition in electrostatically stabilized colloidal dispersions [Phys. Rev. E 61, 2831 (2000)]. We employ the Yukawa potential to establish a flocculation diagram for a much larger range of the electrostatic parameters, namely the surface charge density and the Debye screening length. As a new feature, a kinetically stabilized dispersion close to the nematic-isotropic phase transition is found.

Affiliated with

Also associated with

No associations

Rating

Interaction and flocculation of spherical colloids wetted by a surface-induced corona of paranematic order 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 Interaction and flocculation of spherical colloids wetted by a surface-induced corona of paranematic order, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Interaction and flocculation of spherical colloids wetted by a surface-induced corona of paranematic order will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-497553