Assembling and Disassembling Ag Clusters on Si(111)-(7×7) by Vertical Atomic Manipulation
- 7 August 2011
- journal article
- Published by American Chemical Society (ACS) in ACS Nano
- Vol. 5 (9), 7608-7616
- https://doi.org/10.1021/nn202636g
Abstract
Atomic manipulation has been rarely used in the studies of complex structures and a low temperature requirement usually limits its application. Herein we have demonstrated a vertical manipulation technique to reproducibly and reversibly manipulating Ag atoms on an Si(111)-(7×7) surface by a scanning tunneling microscope tip at room temperature. Simple and complex Ag nanoclusters were assembled and disassembled with a precise control of single Ag atoms, which provided critical information on the size of these nanoclusters. The manipulation showed the growth processes of these Ag clusters and even partly unveiled their atomic structures. This technique can form a fundamental basis for further studies of the Ag/Si(111)-(7×7) system and for fabricating functional nanodevices in various metal–semiconductor systems.Keywords
This publication has 31 references indexed in Scilit:
- Complementary Active Sites Cause Size-Selective Reactivity of Aluminum Cluster Anions with WaterScience, 2009
- Structures of Neutral Au 7 , Au 19 , and Au 20 Clusters in the Gas PhaseScience, 2008
- Melting of Sodium Clusters: Where Do the Magic Numbers Come from?Physical Review Letters, 2005
- Ferroelectricity in Free Niobium ClustersScience, 2003
- Au 20 : A Tetrahedral ClusterScience, 2003
- Onset of Catalytic Activity of Gold Clusters on Titania with the Appearance of Nonmetallic PropertiesScience, 1998
- Organic groups cling to the poresNature, 1998
- Size- and support-dependency in the catalysis of goldCatalysis Today, 1997
- The influence of the preparation methods on the catalytic activity of platinum and gold supported on TiO2 for CO oxidationCatalysis Letters, 1997
- Positioning single atoms with a scanning tunnelling microscopeNature, 1990