Nanohillock formation by impact of small low-energy clusters with surfaces
Artikel i vetenskaplig tidskrift, 2003

Results on nanoscale structuring of different substrates (silicon, pyrolytic graphite, indium-tin-oxide) using clusters from 20 to 100 atoms in size formed from gaseous precursors (O2, N2, Ar) at relatively low impact energy up to 15 keV are presented. Images of the substrate surfaces after cluster collisions obtained using atomic force microscopy (AFM) show the formation of hillocks from a few to 15 nm height with a basal diameter from 50 to 300 nm depending on implantation conditions. The shape and size of the structures are found to be a function of the cluster size and species, implantation energy, impact angle and the type of substrate. A model explaining the hillock formation is discussed.

nanosize hillock

cluster source

atomic force microscopy

cluster ion implantation


Vladimir Popok

Chalmers, Institutionen för experimentell fysik, Atomfysik

Sergei Prasalovich

Göteborgs universitet

Eleanor E B Campbell

Göteborgs universitet

Nuclear Instruments and Methods in Physics Research B

Vol. 207 2 145-153


Atom- och molekylfysik och optik

Den kondenserade materiens fysik

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