Controllable synthesis of two-dimensional metal nanoparticle arrays with oriented size and number density gradients
Journal
Advanced Materials
Journal Volume
19
Journal Issue
19
Pages
2979-+
Date Issued
2007
Author(s)
Han, Min
Xu, Changhui
Zhu, Dan
Yang, Lin
Zhang, Jialan
Chen, Yanping
Ding, Kui
Song, Fengqi
Wang, Guanghou
Abstract
The fabrication of 2D nanoparticle arrays with size and number density gradients on a flat surface, by means of the low energy cluster beam deposition method was reported. A magnetron plasma aggregation cluster source was used to generate tin nanoclusters in a collimated beam. The clusters were deposited on solid substrates and characterized using transmission electron microscopy (TEM). When the substrate was directly exposed to the cluster beam vertically, a uniform film with randomly distributed isolated nanoparticles was obtained. The mass of the deposits was controlled in such a way that the equivalent coverage was kept less than one nanoparticle monolayer. The gradient region shows the process of cluster growth from the initial clusters in the free beam to the final ones in the directly exposed region on the substrate.
SDGs
Type
journal article