Long-time self-diffusion of Brownian Gaussian-core particles

Details Long-time self-diffusion of Brownian Gaussian-core particles Long-time self-diffusion of Brownian Gaussian-core particles

2007-10-16

arxiv.org/abs/0710.3111v1

Physics

Condensed Matter

Soft Condensed Matter

5 pages, 5 figures

Scientific paper

10.1016/j.cpc.2008.01.009

Using extensive Brownian dynamics computer simulations, the long-time self-diffusion coefficient is calculated for Gaussian-core particles as a function of the number density. Both spherical and rod-like particles interacting via Gaussian segments ar$ For increasing concentration we find that the translational self-diffusion behaves non-monotonically reflecting the structural reentrance effect in the equilibrium phase diagram. Both in the limits of zero and infinite concentration, it approaches its short-time value. The microscopic Medina-Noyola theory qualitatively accounts for the translational long-time diffusion. The long-time orientational diffusion coefficient for Gaussian rods, on the other hand, remains very close to its short-time counterpart for any density. Some implications of the weak translation-rotation coupling for ultrasoft rods are discussed.

Affiliated with

Also associated with

No associations

Rating

Long-time self-diffusion of Brownian Gaussian-core particles 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 Long-time self-diffusion of Brownian Gaussian-core particles, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Long-time self-diffusion of Brownian Gaussian-core particles will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-714540