self-assembly NANOCLUSTERS oxide surfaces patterned nanotemplates Atomic, molecular and chemical physics
N. Berdunov, G. Mariotto, K. Balakrishnan, S. Murphy, I. V. Shvets, Oxide template for self-assembling arrays of metal nanoclusters, Surface Science, 600, 21, 2006, L287 - L290
Surface Science; 600; 21;
We demonstrate that ordered arrays of metal clusters of a few nanometers in size can be fabricated by self-assembly on a range of oxide nanotemplates. Two systems were chosen, FeO/Pt(111) and Fe3O4, having in common a reconstructed close-packed oxygen surface layer. Deposition of various metal films results in the formation of nanosized clusters arranged according to the surface long-range order. Employing ab-initio calculations we discuss the observed mechanism of site-selective nucleation of the metal nanoclusters. Finally, we discuss the existence of a wide family oxide templates that can be used for self-assembled growth of nanoclusters governed by the same rules.
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