Two-dimensional to three-dimensional transition of tungsten clusters anchored on graphite surface

被引：8
|
作者：
Hayakawa, Tetsuichiro [1 ]
Yasumatsu, Hisato [1 ]
机构：
[1] Genesis Res Inst Inc, Cluster Res Lab, Toyota Technol Inst, E Tokyo Lab, Ichikawa, Chiba 2720001, Japan
来源：
JOURNAL OF NANOPARTICLE RESEARCH | 2012年 / 14卷 / 08期
关键词：
Tungsten clusters; Supported clusters; STM; Graphite; Monatomic-layered cluster disk; SILICON(111)-7X7 SURFACE; TUNNELING SPECTROSCOPY; PLATINUM CLUSTERS; N-CLUSTERS; ADSORPTION; CHEMISORPTION; MICROSCOPE; OXIDATION; NITROGEN; CARBON;
D O I：
10.1007/s11051-012-1022-2
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Experimental studies have been performed on unisize tungsten clusters constructed on a graphite surface by means of the scanning tunneling microscopy. It was found that the geometry of the clusters changes instantaneously from a monatomic-layer tungsten disk to a diatomic-layer structure between the cluster size of 10 and 11. We concluded that this transition is driven by a change in the dominant interaction from the attractive electrostatic interaction between the cluster and the surface to intracluster cohesive metallic interaction.
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页数：6
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