Investigation of nanoparticle generation during femtosecond laser ablation of metals

被引：141

作者：

Noel, Sylvie ^{[1
]}

Hermann, Joerg ^{[1
]}

Itina, Tatiana ^{[1
]}

机构：

[1] Univ Aix Marseille 2, CNRS, LP3, F-13288 Marseille, France

来源：

APPLIED SURFACE SCIENCE | 2007年 / 253卷 / 15期

关键词：

laser ablation; femtosecond laser; nanoparticle synthesis; laser plasma;

D O I：

10.1016/j.apsusc.2007.01.081

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：

The production of nanoparticles via femtosecond laser ablation of gold and copper is investigated experimentally involving measurements of the ablated mass, plasma diagnostics, and analysis of the nanoparticle size distribution. The targets were irradiated under vacuum with a spot of uniform energy distribution. Only a few laser pulses were applied to each irradiation site to make sure that the plume expansion dynamics were not altered by the depth of the laser-produced crater. Under these conditions, the size distribution of nanoparticles does not exhibit a maximum and the particle abundance monotonously decreases with size. Furthermore, the results indicate that two populations of nanoparticles exist within the plume: small clusters that are more abundant in the fast frontal plume component and larger particles that are located mostly at the back. It is shown that the ablation efficiency is strongly related to the presence of nanoparticles in the plume. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：6310 / 6315

页数：6

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