Nanoparticles and nanostructures formed by laser: What can we learn from the modeling?

Tatiana E. Itina; Nawfel Bouflous; Jörg Hermann; Philippe Delaporte

doi:10.1117/12.923129

25 January 2012 Nanoparticles and nanostructures formed by laser: What can we learn from the modeling?

Tatiana E. Itina, Nawfel Bouflous, Jörg Hermann, Philippe Delaporte

Proceedings Volume 8414, Photonics and Micro- and Nano-structured Materials 2011; 841403 (2012) https://doi.org/10.1117/12.923129
Event: Photonics and Micro- and Nano- structured Materials 2011, 2011, Yerevan, Armenia

Abstract

The processes involved in nanoparticle and nanostructure formation by laser are analyzed. Relative contributions of several mechanisms involved are compared. First, we consider the formation of "primary" particles and discuss the difference between femtosecond and nanosecond regimes. Then, "secondary" particle/aggregate formation is discussed. In particular, attention is focused on (i) direct cluster ejection from a target under rapid laser interaction; (ii) condensation/evaporation; (iii) fragmentation/aggregation processes during cluster diffusion; (iv) diffusion, aggregation, and/or coalescence. In addition, routes of control over particle size distribution are proposed. Possibility of formation of colloidal nanoparticles with very narrow size distribution is proven numerically. The role of such parameters as ablation yield, laser wavelength and laser fluence, and surface tension are examined. Finally, controlled nanoparticle self-assembly is discussed as a potential technique for future development of nanomaterials.

Citation Download Citation

Tatiana E. Itina, Nawfel Bouflous, Jörg Hermann, and Philippe Delaporte "Nanoparticles and nanostructures formed by laser: What can we learn from the modeling?", Proc. SPIE 8414, Photonics and Micro- and Nano-structured Materials 2011, 841403 (25 January 2012); https://doi.org/10.1117/12.923129

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