Journal
APPLIED PHYSICS LETTERS
Volume 91, Issue 8, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.2773937
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Fabrication of silver nanoparticle colloids using ultrashort pulse laser ablation in water is studied. Ablation in liquid flow improves the reproducibility and increases the nanoparticle productivity by 380% compared to stationary liquid. Femtosecond laser ablation in water is 20% more efficient than picosecond laser ablation, but due to higher picosecond laser power (higher repetition rate), the nanoparticle productivity at the same pulse fluence is three times higher for picosecond laser ablation. With picosecond laser pulses, the maximum productivity of 8.6 mu g/s is achieved at a pulse energy of 110 mu J and repetition rate of 50 kHz. (C) 2007 American Institute of Physics.
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