Gold clusters deposited on highly oriented pyrolytic graphite by pulse laser ablation and liquid metal ion source

被引：9

作者：

Hu, CW ^{[1
]}

Kasuya, A ^{[1
]}

Wawro, A ^{[1
]}

Horiguchi, N ^{[1
]}

Czajka, R ^{[1
]}

Nishina, Y ^{[1
]}

Saito, Y ^{[1
]}

Fujita, H ^{[1
]}

机构：

[1] MIE UNIV,DEPT ELECT & ELECT ENGN,TSU,MIE 514,JAPAN

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 1996年 / 217卷

关键词：

gold clusters; liquid metal ion source; pulsed laser ablation; pyrolytic graphite;

D O I：

10.1016/S0921-5093(96)10348-8

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We compare the shape and size distribution of supported Au clusters on highly oriented pyrolytic graphite prepared by two kinds of cluster beam techniques, liquid metal ion source and pulsed laser ablation. Scanning tunneling microscopy was applied in air to give topographic images of supported Au clusters. The liquid metal ion source technique gives rise to the quasi-two-dimensional supported Au clusters with a narrow size distribution centered ar 5.3 nm at the low coverage, which is explained by a high growth rate at the cluster periphery, resulting from the large diffusion of metallic atoms on the graphite surface. In contrast, the laser ablation technique yields the three-dimensional and smaller clusters formed by solidifying the incident hot Au clusters onto the substrate during the laser ablating process.

引用

页码：103 / 107

页数：5

共 8 条

[1] ADSORPTION AND DESORPTION KINETICS OF CU AND AU ON (0001) GRAPHITE [J].