期刊
APPLIED SURFACE SCIENCE
卷 229, 期 1-4, 页码 365-371出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2004.02.013
关键词
laser; ablation; solution; metal; colloids; shadowgraph; imaging
in order to clarify the formation mechanism of nano-size particles by laser ablation of metal targets in water, laser ablation at the target-solvent interface was investigated by means of microsecond-resolved shadowgraphy for Ag, An, and Si targets in water. Two types of ablation ejection were observed at the target-solvent interface. One is a straight jet which was observed below 100 mus after a laser pulse. The other is a bubble which was developed below 1 mus and expanded up to a few millimeters in diameter at 200 mus and subsequently collapsed. We propose that the straight jet is ascribable to ejection of clusters and droplets of metal which must be a source of nano-size colloidal particles. On the other hand, the bubble is assigned to water-confined plasma gas. Nano-particles must be also generated by the plasma ablation. (C) 2004 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据