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Proceedings Paper

Nanoparticles and nanostructures formed by laser: What can we learn from the modeling?
Author(s): Tatiana E. Itina; Nawfel Bouflous; Jörg Hermann; Philippe Delaporte
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Paper 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.

Paper Details

Date Published: 26 January 2012
PDF: 13 pages
Proc. SPIE 8414, Photonics and Micro- and Nano-structured Materials 2011, 841403 (26 January 2012); doi: 10.1117/12.923129
Show Author Affiliations
Tatiana E. Itina, Lab. Hubert Curien, CNRS, Univ. de Lyon (France)
Nawfel Bouflous, Lab. Hubert Curien, CNRS, Univ. de Lyon (France)
Jörg Hermann, Lab. Lasers, Plasmas et Procédés Photoniques, CNRS (France)
Philippe Delaporte, Lab. Lasers, Plasmas et Procédés Photoniques, CNRS (France)


Published in SPIE Proceedings Vol. 8414:
Photonics and Micro- and Nano-structured Materials 2011
Rafael Kh. Drampyan, Editor(s)

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