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.
Type de document :
Communication dans un congrès
High Power Laser Ablation, HPLA 2014, AIP Conference Proceedings, Apr 2014, Santa Fe, France. in press, 2014
Liste complète des métadonnées

https://hal-ujm.archives-ouvertes.fr/ujm-00984696
Contributeur : Tatiana Itina <>
Soumis le : lundi 28 avril 2014 - 16:55:47
Dernière modification le : jeudi 11 janvier 2018 - 06:20:35

Identifiants

  • HAL Id : ujm-00984696, version 1

Collections

Citation

M. E. Povarnitsyn, V. Fokin, A. Voloshko, L. Delfour, Tatiana Itina. Numerical analysis of ultrashort laser ablation: application for fabrication of nanoparticles and nanostructures. High Power Laser Ablation, HPLA 2014, AIP Conference Proceedings, Apr 2014, Santa Fe, France. in press, 2014. 〈ujm-00984696〉

Partager

Métriques

Consultations de la notice

39