caa a22 4500 445866098 CHVBK 20180317145458.0 cr unu---uuuuu 170323e20110701xx s 000 0 eng 10.1140/epjd/e2010-10520-5 doi (NATIONALLICENCE)springer-10.1140/epjd/e2010-10520-5 Morphology and stability of Au nanoclusters in HOPG nanopits of well-defined depth [Elektronische Daten] [M. Hugentobler, S. Bonanni, A. Sautier, W. Harbich] Gold nanoparticles with a diameter comprised between 4 and 6 nm are stabilized in nanosized pits of well defined depth in highly oriented pyrolytic graphite (HOPG). These pits are produced by creation of artificial defects, followed by etching under a controlled oxygen atmosphere. At low Au coverage, clusters are found on the edges of the hexagonal pits maximizing the contact to dangling bonds on graphite multisteps. Larger coverage results in Au beads of surprisingly well defined shape and with a constant bead density per unit length. Most remarkable is the stability of these nanostructures under ambient conditions. Temperatures as high as 650K do not alter the morphology of the gold clusters. Higher temperatures do not lead to a change of the cluster morphology but to catalytically driven etching of the HOPG substrate. EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg, 2011 Hugentobler M. Institute of Condensed Matter Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland aut Bonanni S. Institute of Condensed Matter Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland aut Sautier A. Institute of Condensed Matter Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland aut Harbich W. Institute of Condensed Matter Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland aut The European Physical Journal D Springer-Verlag 63/2(2011-07-01), 215-220 1434-6060 63:2<215 2011 63 10053 https://doi.org/10.1140/epjd/e2010-10520-5 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1140/epjd/e2010-10520-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Hugentobler M. Institute of Condensed Matter Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland aut NATIONALLICENCE 700 1- Bonanni S. Institute of Condensed Matter Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland aut NATIONALLICENCE 700 1- Sautier A. Institute of Condensed Matter Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland aut NATIONALLICENCE 700 1- Harbich W. Institute of Condensed Matter Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland aut NATIONALLICENCE 773 0- The European Physical Journal D Springer-Verlag 63/2(2011-07-01), 215-220 1434-6060 63:2<215 2011 63 10053 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer