Product Code: ICAL05_M707
Continuous Production and Online-Characterization of Nanoparticles from Ultrafast Laser Ablation and Laser Cracking
Authors:
Stephan Barcikowski, Laser Zentrum Hannover e.V.; Hannover Germany
Niko Baersch, Laser Zentrum Hannover e.V.; Hannover Germany
Michael Hustedt, Laser Zentrum Hannover e.V.; Hannover Germany
Ramin Sattari, Laser Zentrum Hannover e.V.; Hannover Germany
Andreas Ostendorf, Laser Zentrum Hannover e.V.; Hannover Germany
Presented at ICALEO 2005
Nano-particulate materials and composites show a remarkable nanoproduct market share of 23% with a volume of 17 billion USD in 2002. Compared to conventional nanoparticle production technologies such as colloidal chemistry or flame pyrolysis, laser-based production shows a high potential especially in biomedical, cosmetics and automotive application of nanoparticles.
Direct ultrafast laser ablation of solids and laser cracking of streaming microparticles is used to fabricate nanocores in a continuous process. Without using any chemical precursors, the nanocores are generated in liquid and gaseous media. Nano-analytical instrumentation is applied for production rate determination and nanomaterial characterization using online-measurement of the particle diameter and optical resonance phenomena. Furthermore, methods to improve the particle dispersion and stabilization against aggregation are demonstrated. Finally, laser-based continuous nanoparticle production technologies are compared under the aspects of running costs.
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