Single file diffusion of macroscopic charged particles

Details Single file diffusion of macroscopic charged particles Single file diffusion of macroscopic charged particles

2010-04-22

arxiv.org/abs/1004.3851v1

Physics

Condensed Matter

Statistical Mechanics

26

Scientific paper

In this paper, we study a macroscopic system of electrically interacting metallic beads organized as a sequence along an annulus. A random mechanical shaking mimics the thermal excitation. We exhibit non Fickian diffusion (Single File Diffusion) at large time. We measure the mobility of the particles, and compare it to theoretical expectations. We show that our system cannot be accurately described by theories assuming only hard sphere interactions. Its behavior is qualitatively described by a theory extended to more realistic potentials [Kollmann, PRL {\bf 90} 180602, (2003)]. A correct quantitative agreement is shown, and we interpret the discrepancies by the violation of a key assumption of the theory, that of overdamped dynamics. We recast previous results on colloids with known interaction potentials, and compare them quantitatively to the theory. Focusing on the transition between ordinary and single file diffusion, we exhibit a dimensionless crossover time that is of order one both for colloids and our system, although the time and length scales differ by several orders of magnitude.

Affiliated with

Also associated with

No associations

Rating

Single file diffusion of macroscopic charged 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 Single file diffusion of macroscopic charged particles, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Single file diffusion of macroscopic charged particles will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-458893