Sizing gold nanoparticles obtained by laser ablation using Optical Extinction Spectroscopy

G. A. TORCHIA; L. B. SCAFFARDI; C. MÉNDEZ; P. MORENO; J. O. TOCHO; L. ROSO

Québec City, Canada

Simposio; 9th International Symposium on Laser Precision Microfabrication (LPM 2008); 2008

Optical extinction for determining size distribution of gold nanoparticles fabricated by ultrashort pulsed laser ablation G. A. Torchia1,2,  L. B. Scaffardi1,3, C. Méndez2, P. Moreno2, J. O. Tocho1,4  and L. Roso2 1Centro de Investigaciones Ópticas (CIOp) Casilla de Correo 124 La Plata (1900), Argentina 2Servicio Láser Universidad de Salamanca Plaza de la Merced s/n 37008 Salamanca, Spain.3 Departamento de Ciencias Básicas, Facultad de Ingeniería, Universidad Nacional La Plata, Argentina 4 Departamento de Física, Facultad de Ciencias Exactas, Universidad Nacional de La Plata, Argentina gtorchia@usal.es; gustavot@ciop.unlp.edu.ar Nowadays, the fabrication and manipulation of nanoparticles is a sounding topic in applied physics which is demanded from different research areas such as biology, medicine, photonic, etc. Traditionally, chemical methods are the main way to generate nanoparticles which require special laboratory conditions and are not environmentally clean. It is well known that by means of femtosecond  laser ablation using moderated fluences (< 1000 J/cm2) a large number of small nanoparticles (