Self-assembly of multilayer arrays from Ag nanoclusters delivered to Ag(111) by soft landing

被引：12

作者：

Chey, SJ ^{[1
]}

Huang, L ^{[1
]}

Weaver, JH ^{[1
]}

机构：

[1] Univ Minnesota, Dept Mat Sci & Chem Engn, Minneapolis, MN 55455 USA

来源：

SURFACE SCIENCE | 1998年 / 419卷 / 01期

关键词：

clusters; nanostructures; scanning tunneling microscopy; silicon; silver; surface morphology;

D O I：

10.1016/S0039-6028(98)00755-9

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Three-dimensional Ag nanostructures containing 150-600 000 atoms were created on Xe multilayers at 50 K. They were delivered to Ag(lll), strained Ag(lll), and Ag/Si(lll)-(root 3 x root 3)R30 degrees following Xe desorption, and they were imaged with a scanning tunneling microscope after warming to room temperature. On Ag(lll), they wetted the surface and produced hexagonal multilayer epitaxial islands that decayed via step-step contact while maintaining a constant mean terrace width of approximate to 11 Angstrom. On strained Ag(lll), there was wetting and an irregular hexagonal footprint but strain stabilized the multilayers by changing the energetics of atom exchange and step fluctuation. On Ag/Si(lll)-(root 3 x root 3)R30 degrees, contacts were established but decay was not observed. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：L100 / L106

页数：7

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