Journal
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
Volume 145, Issue 3, Pages 201-207Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/S1010-6030(01)00583-4
Keywords
laser ablation; metal colloids; silver; copper; solution; ablation efficiency; wavelength; fluence
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Laser ablations of silver and copper targets in water were performed to prepare nanosize metal colloids. The influence of the laser wavelength, focusing conditions, and laser fluence on the ablation efficiency was studied. The relation between the ablation efficiency and wavelength varied with laser fluence. The ablation efficiency at shorter wavelengths was higher at low fluence, while the ablation efficiency at longer wavelengths was higher at high fluence. These findings were discussed in terms of the intra-pulse and inter-pulse self-absorptions of the incident laser light by colloidal particles. (C) 2001 Elsevier Science B.V. All rights reserved.
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