Plasma-driven self-organization of Ni nanodot arrays on Si(100)

Levchenko, I.; Ostrikov, K.; Diwan, K.; Winkler, K.; Mariotti, D.
November 2008
Applied Physics Letters;11/3/2008, Vol. 93 Issue 18, p183102
Academic Journal
The results of the combined experimental and numerical study suggest that nonequilibrium plasma-driven self-organization leads to better size and positional uniformity of nickel nanodot arrays on a Si(100) surface compared with neutral gas-based processes under similar conditions. This phenomenon is explained by introducing the absorption zone patterns, whose areas relative to the small nanodot sizes become larger when the surface is charged. Our results suggest that strongly nonequilibrium and higher-complexity plasma systems can be used to improve ordering and size uniformity in nanodot arrays of various materials, a common and seemingly irresolvable problem in self-organized systems of small nanoparticles.


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