Perspective on the use of nanoparticles to improve LIBS analytical performance: nanoparticle enhanced laser induced breakdown spectroscopy (NELIBS)

In this paper, the new approach for Laser Induced Breakdown Spectroscopy (LIBS) based on nanoparticle deposition on the sample surface is reviewed from both fundamental and application points of view. The case of Nanoparticle-Enhanced LIBS (NELIBS) of metal samples is used for describing and discussing the main causes of the emission signal enhancement. A set of test cases is presented, which shows enhancements up to 1-2 orders of magnitude obtained using NELIBS with respect to LIBS. The feasibility and potential of NELIBS are also discussed for several analytical applications, including analysis of metallic samples, transparent samples and aqueous solutions.