Fabrication of a well-ordered nanohole array stable at room temperature

K. Aït-Mansour1, A. Buchsbaum2, P. Ruffieux1, M. Schmid2, P. Gröning1, P. Varga2, R. Fasel1, and O. Gröning1

1 Empa, Swiss Federal Laboratories for Materials Testing and Research, 3602 Thun, Switzerland
2 Institut für Allgemeine Physik, Technische Universität Wien, 1040 Wien, Austria

Nano Lett. 8 (2008) 2035-2040

We report on the fabrication of a new type of nanotemplate surface consisting of a hexagonally well-ordered array of one monolayer deep holes with a tunable size of about 4 nm2 and a fixed spacing of 7 nm. The nanohole array fabrication is based on the strain-relief trigonal network formed in the 2 monolayer Ag on Pt(111) system. Removing about 0.1 ML of the Ag top layer of this surface structure, for example, by Ar- or He-ion sputtering, leads to the formation of nanoholes at specific domains of the trigonal network, which are stable at room temperature.

Corresponding author: K. Aït-Mansour, O. Gröning. Reprints also available from M. Schmid (schmid< encoded email address >).

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