Abstracts Book - IMRC 2018

• SA5-P019
SILVER NANOPARTICLES ABLATED BY 5NS LASER: STANDARD
OPTICAL CHARACTERIZATION TO SERS APPLICATIONS
Jonathan Álvarez 1 , Héctor Reynoso 1 , Diana Paola Arenas Ramirez 1 , Rigoberto Castro 1
1 Universidad de Guanajuato campus León, Física, Mexico.
Silver nano particle fabricated by laser ablation (LA) process were optically
characterized and applied for surface enhanced Raman spectroscopy (SERS) . In
this work UV-VIS, SEM and digital image processing were used to know the
optical features of colloidal solution, substrate deposition and geometrical
aspects. Three different time of laser exposure were considering as protocol for
optical comparison measurement. The achieved sizes ranges 5 to 20 nm with
spherical shape. We were able to achieve SERS effect on rodhamine 6G (R6G),
an standard molecule, at 4 different concentrations: 10 -3 M, 10 -4 M, 10 -6 M and 10 -
8 M. In colloidal solution for longer exposure to laser time , more homogeneous
particle distribution and better SERS sensitive were obtained.
Keywords: Metallic nanoparticles, SERS, Laser ablation
Presenting authors email: alvarezmj2013@licifug.ugto.mx