In this paper an increase of 1-2 orders of magnitude in Laser Induced Breakdown Spectroscopy (LIBS) signals was obtained by depositing silver nanoparticles on metal samples. Nanoparticle-Enhanced LIBS (NELIBS) proved a robust and flexible tool for the chemical analysis of metals because the sample emission signal did not appear very affected by the size and concentration of deposited nanoparticles (NPs), respectively within a range of 10 nm of diameter and one order of magnitude of concentration. On the other hand, preliminary NELIBS tests on insulators and semiconductors did not show any significant enhancement with respect to conventional LIBS. In this paper we present a detailed investigation of the fundamental features of the NELIBS spectra, in addition to some examples of analytical applications to the quantitative analysis of metal alloys.
Nanoparticle-Enhanced Laser Induced Breakdown Spectroscopy of metallic samples
DE GIACOMO, ALESSANDRO
;Gaudiuso R;
2013-01-01
Abstract
In this paper an increase of 1-2 orders of magnitude in Laser Induced Breakdown Spectroscopy (LIBS) signals was obtained by depositing silver nanoparticles on metal samples. Nanoparticle-Enhanced LIBS (NELIBS) proved a robust and flexible tool for the chemical analysis of metals because the sample emission signal did not appear very affected by the size and concentration of deposited nanoparticles (NPs), respectively within a range of 10 nm of diameter and one order of magnitude of concentration. On the other hand, preliminary NELIBS tests on insulators and semiconductors did not show any significant enhancement with respect to conventional LIBS. In this paper we present a detailed investigation of the fundamental features of the NELIBS spectra, in addition to some examples of analytical applications to the quantitative analysis of metal alloys.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
