Pattern Formation via BLAG. Mike Parks & Saad Khairallah. Outline. Simulate laboratory experiments If successfully simulated, proceed to new computer experiments. Phase 1: Deposition. Gold particles incoming onto the surface from a heat source. The particles will not move much at T=20K.
Pattern Formation via BLAG
Mike Parks & Saad Khairallah
Gold particles incoming onto the surface from a heat source
The particles will not move much at T=20K
Xenon particles desorbing
With a sticking
of one they
Thin xenon film
acts as timer
Final Equilibrium State:
clusters on substrate
t = (# Atoms Moved)/(# Atoms),
i.e. diffusion does not depend on time.
1.9 +/- 0.3
2.00 +/- 0.03
New results. We see same dimension as with no charging.
The effect of charging subsides according to coverage:
particles neutralize each other quickly
particles neutralize each other slowly