Journal
LASER PHYSICS LETTERS
Volume 13, Issue 10, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1612-2011/13/10/106002
Keywords
ablation efficiency; laser ablation in liquid; synthesis of silver nanoparticles; repetition rate of the laser pulses
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Funding
- CONACyT, Mexico [CB 0176705]
- CONACyT, Mexico, Red de Nanociencias y Nanotecnologia
- UNAM-DGAPA [PAPIIT IG100415]
- Laboratorio Nacional de Investigaciones en Nanociencias y Nanotecnologia (LINAN), IPICYT
- Catedras program from CONACyT
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We studied the effect of the repetition rate of laser pulses (RRLP) in the range from 1-10 Hz in the production of silver nanoparticles (Ag-NPs) by laser ablation in ethanol. Laser pulses with a duration of 7 ns, a wavelength of 1064 nm and an energy of 60 mJ were used to ablate a 99.99% pure silver target immersed in 10 ml of ethanol. Transmittance analysis and atomic absorption spectroscopy were used to study the silver concentration in the colloidal solutions. The ablation process was studied by measuring the transmission of the laser pulses through the colloid. It is shown that for a fixed number of laser pulses (NLP) the ablation efficiency, in terms of the ablated silver mass per laser pulse, increases with the RRLP. This result contradicts what had previously been established in the literature.
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