期刊
APPLIED PHYSICS LETTERS
卷 94, 期 5, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3079404
关键词
atomic force microscopy; copper; delays; gold; high-speed optical techniques; laser ablation; nanoparticles; plasma production by laser
Using fast imaging and atomic force microscopy, we demonstrate that the fraction of nanoparticles in ablation plumes produced by short pulse laser irradiation of metals is strongly altered when a second laser pulse of sufficiently large delay is applied. Comparing the results obtained for gold and copper, it is shown that a significant nanoparticle reduction is only observed if the delay between both laser pulses exceeds the characteristic time of electron-lattice thermalization. We propose the reduced electronic heat transport at large lattice temperature as the dominant mechanisms for the observed nanoparticle reduction.
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