Physics – Condensed Matter – Statistical Mechanics
Scientific paper
2007-06-26
Physics
Condensed Matter
Statistical Mechanics
18 pages, 8 figures, to be published in Physical Review E
Scientific paper
10.1103/PhysRevE.75.061608
We study roughness scaling of the outer surface and the internal porous structure of deposits generated with the three-dimensional bidisperse ballistic deposition (BBD), in which particles of two sizes are randomly deposited. Systematic extrapolation of roughness and dynamical exponents and the comparison of roughness distributions indicate that the top surface has Kardar-Parisi-Zhang scaling for any ratio F of the flux between large and small particles. A scaling theory predicts the characteristic time of the crossover from random to correlated growth in BBD and provides relations between the amplitudes of roughness scaling and F in the KPZ regime. The porosity of the deposits monotonically increases with F and scales as F^{1/2} for small F, which is also explained by the scaling approach and illustrates the possibility of connecting surface growth rules and bulk properties. The suppression of relaxation mechanisms in BBD enhances the connectivity of the deposits when compared to other ballisticlike models, so that they percolate down to F~0.05. The fractal dimension of the internal surface of the percolating deposits is D_F~2.9, which is very close to the values in other ballisticlike models and suggests universality among these systems.
Aarao Reis Fabio D. A.
Silveira F. A.
No associations
LandOfFree
Surface and Bulk Properties of Deposits Grown with a Bidisperse Ballistic Deposition Model 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 Surface and Bulk Properties of Deposits Grown with a Bidisperse Ballistic Deposition Model, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Surface and Bulk Properties of Deposits Grown with a Bidisperse Ballistic Deposition Model will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-506365