Random deposition of particles:

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Presentation transcript:

Random deposition of particles: simulation of the real world

Snow particles falling on a window

Ag on Pt at 110K

Use computer simulation to find out the hidden rules behind the growth

Ballistic deposition

L=200 35000 particles <h(t)> ~ t

Surface roughness v.s. time Saturation of the width Cross-over

Both the cross-over time and the surface roughness depends on system size L

With proper units of length and time, all the curves can be “collapsed” to the same curve

2-dim growth Diffusion-limited aggregation