Random sequential adsorption of spheres of different sizes
Abstract
The random sequential adsorption of spheres selected from monodisperse, binary and polydisperse distributions on a three-dimensional substrate has been studied by computer simulations. In the monodisperse case the adsorbed particle density algebraically approaches an asymptotic value of 0.384±0.001, according to Feder's law (Feder, J. Theor. Biol. 87 (1980) 237). For the case of spheres of two different sizes the large sphere density approaches its asymptotic value exponentially while the small sphere density increases according to Feder's law. If the sphere radii ( ri) are uniformly distributed over the range rA< ri< rB (before testing for overlaps) then the approach to the asymptotic density is algebraic but the effective exponent depends on the model parameter R= rB/ rA.
- Publication:
-
Physica A Statistical Mechanics and its Applications
- Pub Date:
- September 1992
- DOI:
- 10.1016/0378-4371(92)90006-C
- Bibcode:
- 1992PhyA..187..475M