MORPHOLOGY OF AMORPHOUS LAYERS BALLISTICALLY DEPOSITED ON A PLANAR SUBSTRATE

被引:14
作者
LUBACHEVSKY, BD
PRIVMAN, V
ROY, SC
机构
[1] UNIV OXFORD,DEPT PHYS,OXFORD OX1 3NP,ENGLAND
[2] COLL WILLIAM & MARY,DEPT COMP SCI,WILLIAMSBURG,VA 23185
来源
PHYSICAL REVIEW E | 1993年 / 47卷 / 01期
关键词
D O I
10.1103/PhysRevE.47.48
中图分类号
O35 [流体力学]; O53 [等离子体物理学];
学科分类号
070204 ; 080103 ; 080704 ;
摘要
We report numerical simulation of the deposition of spherical particles on a planar surface, by ballistic, straight-line trajectory transport, and assuming irreversible adhesion on contact with the surface or previously deposited particles. Our data indicate that the deposit formed has a loosely layered structure within a few diameters from the surface. This structure can be explained by a model of growth via chain formation. Away from the surface we found evidence of a monotonic, power-law approach to the bulk density. Both density and contact-statistics results suggest that the deposit formed is sparse: the space-filling fraction is about 15%, and the average number of contacts is 2. The morphology of the deposit both near the surface and in the bulk seems to be a result of competition of screening and branching; nearly half of all the spheres are either single-contact dangling ends, or branching nodes with more than two contacts.
引用
收藏
页码:48 / 53
页数:6
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