|Abstract Number: ||2350 - 6|
|Author Name: ||Alessandro De Giacomo - University of Bari|
|Session Title: ||SAS - Atomic Spectroscopy: Going Strong in the 21st Century|
|Event Type: ||Symposia|
|Event Title: ||Nanoparticles-Enhanced Laser Induced Breakdown Spectroscopy: Concepts and Applications|
|Presider Name:||David Hahn||Co-Author:||Can Koral, Rosalba Gaudiuso, Marcella Dell'Aglio, Olga De Pascale|
|Affiliation:||University of Florida||Affiliation:||University of Bari, CNR-IMIP|
|Date: ||Thursday, March 12, 2015|
|Start Time: ||10:35 AM (Slot #6)|
|The development of knowledge on nanotechnology is having a great impact in analytical chemistry like in mass spectrometric techniques, SERS, high resolution microscopy and gas sensors. The nanometric scale of particle dimension causes peculiar physical features for what concerns their electrical, optical and thermal properties that have been intensively investigated in the last decade.|
Starting from these considerations we have recently proposed Nanoparticle Enhanced Laser Induced Breakdown Spectroscopy (NELIBS) in order to enhance the efficiency of the laser-matter interaction and to consequently increase the emission LIBS signal. NELIBS is based on the deposition of a colloidal solution of noble metal NP on the sample surface and virtually does not require any change in the LIBS set-up. As examples in the case of conducting samples, NELIBS allows a signal enhancement up to tow orders of magnitude as a consequence of electron field emission during the laser-matter interaction. Instead in the case of transparent media, it is possible to obtain enhanced spectra with respect to conventional LIBS by inducing changes in the optical properties, without damaging or cracking the sample itself.
In this work the fundamental aspects of NELIBS is discussed in correlation with quantitative analysis of different kind of samples ranging from metals and alloys to glasses. Further perspective of nanoparticles applications to LIBS will be discussed as well.