Dr. Stefano Legnaioli
Italian National Council for Research - Institute for the Chemistry of Organometallic Compounds, 56124 Pisa, Italy
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Academic Career Length
25Years (2002-Present)
(Calculated once Scilit publication data is synced: current year − year of first publication + 1)
Representative Publications
View All Publications20 March 2025 in Nature Reviews Methods Primers
Journal Article
Vincenzo PalleschiStefano LegnaioliFPFrancesco Poggialini
Francesco Poggialini
FBFausto Osvaldo Bredice
Fausto Osvaldo Bredice
IUIvan Alexander Urbina
Ivan Alexander UrbinaSASabrina Messaoud Aberkane
Sabrina Messaoud Aberkane +1
Journal Article
BCBeatrice Campanella
Beatrice CampanellaStefano Legnaioli
Stefano PagnottaFPFrancesco Poggialini
Francesco PoggialiniVincenzo PalleschiThe production of a plasma by a pulsed laser beam in solids, liquids or gas is often associated with the generation of a strong shock wave, which can be studied and interpreted in the framework of the theory of strong explosion. In this review, we will briefly present a theoretical interpretation of the physical mechanisms of laser-generated shock waves. After that, we will discuss how the study of the dynamics of the laser-induced shock wave can be used for obtaining useful information about the laser–target interaction (for example, the energy delivered by the laser on the target material) or on the physical properties of the target itself (hardness). Finally, we will focus the discussion on how the laser-induced shock wave can be exploited in analytical applications of Laser-Induced Plasmas as, for example, in Double-Pulse Laser-Induced Breakdown Spectroscopy experiments.
Journal Article
FPFrancesco Poggialini
Francesco PoggialiniStefano LegnaioliBCBeatrice Campanella
Beatrice CampanellaBCBruno Cocciaro
Bruno CocciaroGLGiulia Lorenzetti
Giulia LorenzettiVincenzo Palleschi +1
The objectives of this paper will be to discuss the issues related to the determination of the limits of detection (LOD) in laser-induced breakdown spectroscopy (LIBS) analytical applications. The derivation of the commonly used ‘3-sigma over slope’ rule and its evolution towards the new official definition recently adopted by the International Union of Pure and Applied Chemistry (IUPAC) will be illustrated. Methods for extending the calculation of the LOD to LIBS multivariate analysis will also be discussed, using as an example the detection of Cu traces in cast iron samples by LIBS.
19 January 2021 in ChemTexts
Journal Article
Journal Article
SASabrina Messaoud Aberkane
Sabrina Messaoud AberkaneASAli Safi
Ali SafiABAsia Botto
Asia BottoBCBeatrice Campanella
Beatrice CampanellaStefano LegnaioliVincenzo Palleschi +3
In this review, we report and critically discuss the application of LIBS for the determination of plasma-emission fundamental parameters, such as transition probabilities, oscillator strengths, Stark broadening and shifts, of the emission lines in the spectrum. The knowledge of these parameters is of paramount importance for plasma diagnostics or for quantitative analysis using calibration-free LIBS methods. In the first part, the theoretical basis of the analysis is laid down; in the second part, the main experimental and analytical approaches for the determination by LIBS of the spectral line spectroscopic parameters are presented. In the conclusion, the future perspectives of this kind of analysis are discussed.
29 December 2014 in Journal of Spectroscopy
Journal Article
EGEmanuela Grifoni
Emanuela GrifoniStefano Legnaioli
Marco LezzeriniGLGiulia Lorenzetti
Giulia Lorenzetti
Stefano PagnottaVincenzo PalleschiLaser-induced breakdown spectroscopy (LIBS) data are characterized by a strong dependence on the acquisition time after the onset of the laser plasma. However, time-resolved broadband spectrometers are expensive and often not suitable for being used in portable LIBS instruments. In this paper we will show how the analysis of a series of LIBS spectra, taken at different delays after the laser pulse, allows the recovery of time-resolved spectral information. The comparison of such spectra is presented for the analysis of an aluminium alloy. The plasma parameters (electron temperature and number density) are evaluated, starting from the time-integrated and time-resolved spectra, respectively. The results are compared and discussed.
About Me
Dr. Stefano Legnaioli obtained his degree in Physics from the University of Pisa (UNIPI), his PhD degree in Chemical Sciences from the University of Florence, and his Master’s degree in Innovation and Knowledge Transfer (MIT) from the School of Management MIP, Politecnico di Milano. He is currently a Senior Researcher at ICCOM-CNR. His research interests include spectroscopic techniques (LIBS, Raman, SERS, XRF, multispectral imaging) applied to Cultural Heritage (pigment and dye analysis, analysis of ceramics, archaeo-metallurgy, bronzes, golden jewels, control of laser cleaning processes, analysis of paper and manuscripts), environmental science (quantitative analysis of pollutants in industrial smoke, analysis of polluted soils and water), biomedicine (hair mineral content analysis by LIBS, SERS analysis of exosomes) and material characterization (quantitative analysis of metallic alloys, aluminium alloys, steels, study of semiconductors, gold karat determination in precious alloys), as well as monitoring of industrial processes.