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Títol:	RE-irradiation of silver nanoparticles obtained by laser ablation in water and assessment of their antibacterial effect
Autor/a:	Fernández-Arias, Mónica; Boutinguiza Larosi, Mohamed; Del Val García, Jesús; Medina, Elisa; Rodríguez, Daniel; Riveiro, Antonio; Comesaña, Rafael; Gil Mur, Francisco Javier; Pou, Juan
Notes:	The rapid evolution of resistant bacteria is a huge problem in medicine because makes the treatment of infections more and more difficult. The bactericidal properties of noble metal nanoparticles could be a solution. In this work silver nanoparticles were produced by using two nanosecond Nd:YVO4 lasers operating at 1064 and 532 nm respectively to ablate a silver target submerged in pure de-ionized water. Part of the resulting colloidal solution was injected as a fine stream by a compressed air system and re-irradiated one and three times with the same laser to resize and get uniform nanoparticles. The obtained nanoparticles by ablation and re-irradiation consisted of crystalline Ag nanoparticles with a bimodal size distribution. The particle size has been reduced by subsequent laser re-irradiation with both laser sources, reaching a 40% of mean size reduction. Inhibitory effects on the proliferation of Staphylococcus aureus was demonstrated on silver nanoparticles obtained after re-irradiation with the infrared laser.
Matèries:	-Nanopartícules -Nanoparticles -Ablació amb làser -Laser ablation -Ablación con láser -54 -61
Drets:	http://creativecommons.org/licenses/by-nc-nd/4.0/ Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/
Tipus de document:	Article Article - Versió acceptada
Publicat per:	Elsevier
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