Phase Separation in the Wake of Moving Fronts: Experiments and Simulations

Details Phase Separation in the Wake of Moving Fronts: Experiments and Simulations Phase Separation in the Wake of Moving Fronts: Experiments and Simulations

2005-07-27

arxiv.org/abs/cond-mat/0507639v1

Physics

Condensed Matter

Materials Science

Scientific paper

The formation of regular precipitate stripes in the wake of moving chemical reaction-diffusion fronts is investigated. Experiments on the $NaOH+CuCl_2$ reaction in PVA hydrogel yield stripes parallel or slightly oblique to the front that supplies the precursor of the precipitate. The pattern formation was modeled by phase separation described by the Cahn-Hilliard Equation. Computer simulations reproduced the parallel and the oblique striping as well. Stripes perpendicular to the front are unstable and cannot be observed, in complete agree with the experiments. Pattern formation in the wake of quenching fronts has also been investigated computationally, and compared to the previous results. It has been shown that below a certain front speed stripes perpendicular to the front will appear. Moreover, they will bend so that their growing end to be kept perpendicular even if the front changes its direction. This result can be important in designing several nanotechnologica lithographical processes.

Affiliated with

Also associated with

No associations

Rating

Phase Separation in the Wake of Moving Fronts: Experiments and Simulations 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 Phase Separation in the Wake of Moving Fronts: Experiments and Simulations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Phase Separation in the Wake of Moving Fronts: Experiments and Simulations will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-494599