Nanoparticle-Enhanced Laser Induced Breakdown Spectroscopy Using Copper-Silver And Nickel-Carbon Nanocomposites On Aluminium

Composite Ag-Cu and Ni-C nanoparticles were synthesized by laser ablation and spark discharge in liquid, respectively. An amplification of the signal during laser induced breakdown spectroscopy was observed after deposition of the nanoparticles on the surface of an aluminum foil. The emission intensity of the laser plume increased from 2 to 20 times depending on the spectral lines used for the measurements. The intensity growth was higher for Ag-Cu nanoparticles.