Effect of bond lifetime on the dynamics of a short-range attractive colloidal system

Details Effect of bond lifetime on the dynamics of a short-range attractive colloidal system Effect of bond lifetime on the dynamics of a short-range attractive colloidal system

2004-03-12

arxiv.org/abs/cond-mat/0403320v2

Physics

Condensed Matter

Soft Condensed Matter

Revised; 9 pages, 9 figures

Scientific paper

10.1103/PhysRevE.70.041401

We perform molecular dynamics simulations of short-range attractive colloid particles modeled by a narrow (3% of the hard sphere diameter) square well potential of unit depth. We compare the dynamics of systems with the same thermodynamics but different bond lifetimes, by adding to the square well potential a thin barrier at the edge of the attractive well. For permanent bonds, the relaxation time $\tau$ diverges as the packing fraction $\phi$ approaches a threshold related to percolation, while for short-lived bonds, the $\phi$-dependence of $\tau$ is more typical of a glassy system. At intermediate bond lifetimes, the $\phi$-dependence of $\tau$ is driven by percolation at low $\phi$, but then crosses over to glassy behavior at higher $\phi$. We also study the wavevector dependence of the percolation dynamics.

Affiliated with

Also associated with

No associations

Rating

Effect of bond lifetime on the dynamics of a short-range attractive colloidal system 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 Effect of bond lifetime on the dynamics of a short-range attractive colloidal system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Effect of bond lifetime on the dynamics of a short-range attractive colloidal system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-161245