Production of nanoparticles with high repetition rate picosecond laser

Abstract

The fabrication of silver and gold nanoparticle colloids using the picosecond (10 ps) laser ablation in liquids was studied. The maximum productivity of 8.6 μg/s nanoparticles was achieved with the 10 ps-laser pulses at high pulse energy (110 μJ) and the repetition rate of 50 kHz. A special stirred flow chamber was constructed in order to improve reproducibility and generation speed of nanoparticles in flowing liquid during the ps-laser ablation.