 |
Université Jean Monnet – Saint-Etienne |  |
Journal articles
Numerical Analysis of Ultrashort Laser Ablation: Application for Fabrication of Nanoparticles and Nanostructures
Abstract : In this study, first we examine nanoparticle formation by femtosecond laser ablation under different experimental conditions. The dynamics of the laser plume expansion is investigated and the possibility of primary nanoparticle formation is analyzed. Then, we consider thermalization process in a background environment, diffusion-driven nucleation and longer scale nanoparticle aggregation/sintering. In addition, laser-assisted fragmentation of nanoparticles is examined, which can play a particular role in the multi-pulse regime. In this later case, nanoparticle size distribution results from an ensemble of processes thus revealing different particle populations. Calculations are performed for metals under different background conditions. The calculation results explain recent experimental findings and help to predict the role of the experimental parameters. The obtained nanoparticles are also used to form nanostructures. The performed analysis thus indicates ways of a control over the involved laser-assisted techniques.
Cited literature [23 references]
https://hal-ujm.archives-ouvertes.fr/ujm-01077430
Contributor : Tatiana Itina Connect in order to contact the contributor
Submitted on : Friday, October 24, 2014 - 4:35:14 PM
Last modification on : Monday, January 13, 2020 - 5:46:04 PM
Long-term archiving on: : Sunday, January 25, 2015 - 10:50:13 AM
Contributor : Tatiana Itina Connect in order to contact the contributor
Submitted on : Friday, October 24, 2014 - 4:35:14 PM
Last modification on : Monday, January 13, 2020 - 5:46:04 PM
Long-term archiving on: : Sunday, January 25, 2015 - 10:50:13 AM
File
1405.3439v1.pdf
Files produced by the author(s)