RESULTS FROM 1 TO 20 OF 52

2014, Contributo in volume, ENG

Physical processes in optical emission spectroscopy, in Laser-Induced Breakdown Spectroscopy. Theory and Applications

M. Capitelli (a), G. Colonna (a), G. D'Ammando (a), R. Gaudiuso (a,b), L.D. Pietanza (a)

2014, Abstract in atti di convegno, ENG

Laser Induced Breakdown Plasma Fundamentals, 22nd International Conference on Spectral Line Shapes

A. De Giacomo (a,b), M. Dell'Aglio (a), R. Gaudiuso (a,b), O. De Pascale (a)

ICSLS22, Tullahoma, TN-USA, 1-6 June 2014

2014, Abstract in atti di convegno, ENG

Double pulse laser ablation in liquid for the production of nano-structures: fundamental aspects and potential advantages

A. De Giacomo (a,b), M. Dell'Aglio (a), R. ElRashedy (b), R. Gaudiuso (a,b), E. Bronzini (b), O. De Pascale (a), G. Palazzo (b)

Advanced Nanoparticle Generation and Excitation by laser in Liquids (ANGEL), Matsuyama-Japan, 19-21 May 2014

2014, Poster, ENG

Interaction between laser-induced shock-waves and weakly ionized plasmas

R. Gaudiuso (a,b), D. Bruno (b), A. De Giacomo (a,b)

LIBS 2014, Pechino (Cina), 8-12 settembre 2014

2014, Abstract in atti di convegno, ENG

Laser ablation plasmas produced from metals and silicates in meteorite samples

M. Dell'Aglio (a), A. De Giacomo (a,b), R. Gaudiuso (a,b), O. De Pascale (b), S. Longo (a,b)

41st EPS conference, Berlino, 23.- 27.6.2014

2014, Poster, ENG

Nanoparticle-Enhanced LIBS of transparent substrates

C. Koral (a), R. Gaudiuso (a,b), M. Dell'Aglio (b), O. De Pascale (b), A. De Giacomo (a,b)

LIBS 2014, Pechino (Cina), 8-12 settembre 2014

2014, Abstract in atti di convegno

Laser Ablation in liquid during nanoparticle production

A. De Giacomo (a,b), M. Dell'Aglio (a), R. Gaudiuso (a,b), R. Elrashedy (b), O. De Pascale (a)

SPIG 2014, Belgrade, Serbia, August 26 -29, 2014

2014, Abstract in atti di convegno

Standardless quantitative LIBS approaches for cultural heritage, mineralogy and space exploration

A. De Giacomo (a,b), M. Dell'Aglio (a), R. Gaudiuso (a,b), O. De Pascale (a)

SCIX 14, Reno, NV, (USA), September 28 - October 3, 2014

2014, Abstract in atti di convegno

Nanoparticle-Enhanced Laser Induced Breakdown Spectroscopy: applying nanoscience to LIBS

A. De Giacomo (a,b), M. Dell'Aglio (a), O. De Pascale (a), R. Gaudiuso (a,b), C. Koral (b)

SCIX 14, Reno, NV, (USA), September 28 - October 3, 2014

2014, Abstract in atti di convegno, ENG

Nanoparticle-Enhanced Laser-Induced Breakdown Spectroscopy of metallic samples

R. Gaudiuso(a,b), C. Koral (b), M. Dell'Aglio (a), O. De Pascale (a), A. De Giacomo (a,b)

LIBS 2014, Pechino (Cina), 8-12 Settembre 2014

2014, Articolo in rivista, ENG

Nanoparticle Enhanced Laser Induced Breakdown Spectroscopy: Effect of nanoparticles deposited on sample surface on laser ablation and plasma emission

De Giacomo A.; Gaudiuso R.; Koral C.; Dell'Aglio M.; De Pascale O.

In this paper the use of metallic nanoparticles (NPs) for improving Laser Induced Breakdown Spectroscopy (LIBS) is discussed. In the case of conductors an emission signal enhancement up to 1-2 orders of magnitude was obtained depositing NPs on the sample surface by drying a micro-drop of colloidal solution. The basic mechanisms of Nanoparticle Enhanced LIBS (NELIBS) were studied and the main causes of this significantly large enhancement were found to be related to the effect of NPs on the laser ablation process, in terms of a faster and more efficient production of seed electrons with respect to conventional LIBS. The characteristics of NELIBS-produced plasma were investigated by emission spectroscopy and spectrally resolved images. In spite of similar plasma parameters, the NELIBS plasma was found to have larger emission volume and longer persistence than the LIBS one. A method to determine NP concentration and size was also proposed, which involved depositing NPs on non-interacting substrates, and proved the feasibility of LIBS as a fast detection tool for a preliminary characterization of NPs. © 2014 Elsevier B.V.

Spectrochimica acta. Part B, Atomic spectroscopy 98, pp. 19–27

DOI: 10.1016/j.sab.2014.05.010

2014, Articolo in rivista, ENG

Plasma processes and emission spectra in laser induced plasmas: A point of view

De Giacomo A.; Dell'Aglio M.; De Pascale O.; Gaudiuso R.; Palleschi V.; Parigger C.; Woods A.

In this paper emission spectra of the plasma produced by laser-matter interaction are discussed in terms of the correlation between the elementary plasma processes and the evolution of plasma parameters during the expansion. Three main stages have been identified and discussed in details: high density plasma, near equilibrium plasma and non-equilibrium plasma including molecular formation. In order to develop a comprehensive point of view on the correlation between plasma mechanisms and spectral emission features several concepts already discussed and elucidated in the plasma science have been adapted to the description of the laser induced plasma and to its ionizing and recombining character.

Spectrochimica acta. Part B, Atomic spectroscopy 100, pp. 180–188

DOI: 10.1016/j.sab.2014.08.013

2014, Articolo in rivista, ENG

Laser Induced Breakdown Spectroscopy of meteorites as a probe of the early solar system

Dell'Aglio M.; De Giacomo A.; Gaudiuso R.; De Pascale O.; Longo S.

This paper presents an evaluation of Laser Induced Breakdown Spectroscopy (LIBS) as a technique for gathering data relevant to Solar System geophysics. Two test cases were demonstrated: elemental analysis of chondrules in a chondrite meteorite, and space- resolved analysis of the interface between kamacite and taenite crystals in an octahedrite iron meteorite. In particular most major and minor elements (Fe, Mg, Si, Ti, Al, Cr, Mn, Ca, Fe, Ni, Co) in Sahara 98222 (chondrite) and its chondrules, as well as the profile of Ni content in Toluca (iron meteorite), were determined with the Calibration Free (CF) method. A special attention was devoted to exploring the possibilities offered by variants of the basic technique, such as the use of Fe I Boltzmann distribution as an intensity calibration method of the spectroscopic system, and the use of spatially resolved analysis. © 2014 Elsevier B.V. All rights reserved.

Spectrochimica acta. Part B, Atomic spectroscopy 101, pp. 68–75

DOI: 10.1016/j.sab.2014.07.011

2014, Articolo in rivista, ENG

Laser-induced breakdown spectroscopy of archaeological findings with calibration-free inverse method: Comparison with classical laser-induced breakdown spectroscopy and conventional techniques

Gaudiuso R.; Dell'Aglio M.; De Pascale O.; Loperfido S.; Mangone A.; De Giacomo A.

A modified version of the calibration-free (CF) method was applied to the analysis of a set of archaeological brooches made of various copper-based alloys and coming from the archaeological site of Egnatia (Apulia, Southern Italy). The developed methodology consists in determining the plasma temperature by reversing the set of equations employed in the usual CF algorithm, and it is thus referred to as "inverse method". The plasma temperature is determined for one certified standard, by using its known elemental composition as an input data, and then applied to the set of unknown samples to evaluate their composition in a CF mode. The feasibility of such an approach is demonstrated by comparing the results obtained with classical LIBS (drawing calibration lines with a series of matrix-matched certified standards) and with independent measurements performed with a conventional technique (LA-ICP-MS). © 2014 Elsevier B.V.

Analytica chimica acta (Print) 813, pp. 15–24

DOI: 10.1016/j.aca.2014.01.020

2014, Articolo in rivista, ENG

Multi-methodological investigation of kunzite, hiddenite, alexandrite, elbaite and topaz, based on laser-induced breakdown spectroscopy and conventional analytical techniques for supporting mineralogical characterization

Manuela Rossi (a)o Marcella Dell'Aglio (b) o Alessandro De Giacomo(c,b) o Rosalba Gaudiuso(c,b) o Giorgio Saverio Senesi(b) o Olga De Pascale(b) o Francesco Capitelli(d) o Fabrizio Nestola (e) o Maria Rosaria Ghiara (a)

Phys Chem Minerals, pp. 127–140

DOI: 10.1007/s00269-013-0631-3

2013, Articolo in rivista, ENG

On the determination of plasma electron number density from Stark broadened hydrogen Balmer series lines in Laser-Induced Breakdown Spectroscopy experiments

Pardini, Lorenzo; Legnaioli, Stefano; Lorenzetti, Giulia; Palleschi, Vincenzo; Gaudiuso, Rosalba; De Giacomo, Alessandro; Díaz Pace, Diego M.; Anabitarte García, F.; De Holanda Cavalcanti, Gildo; Parigger, Christian G.

In this work, different theories for the determination of the electron density in Laser-Induced Breakdown Spectroscopy (LIBS) utilizing the emission lines belonging to the hydrogen Balmer series have been investigated. The plasmas were generated by a Nd:Yag laser (1064 nm) pulsed irradiation of pure hydrogen gas at a pressure of 2 · 104 Pa. Ha?, H?, H?, H?, and Balmer lines were recorded at different delay times after the laser pulse. The plasma electron densitywas evaluated through themeasurement of the Stark broadenings and the experimental results were compared with the predictions of three theories (the Standard Theory as developed by Kepple and Griem, the Advanced Generalized Theory by Oks et al., and the method discussed by Gigosos et al.) that are commonly employed for plasma diagnostics and that describe LIBS plasmas at different levels of approximations. A simple formula for pure hydrogen plasma in thermal equilibriumwas also proposed to infer plasma electron density using the H? line. The results obtained showed that at high hydrogen concentration, the H? line is affected by considerable self-absorption. In this case, it is preferable to use the H? line for a reliable calculation of the electron density. © 2013 Elsevier B.V. All rights reserved.

Spectrochimica acta. Part B, Atomic spectroscopy 88, pp. 98–103

DOI: 10.1016/j.sab.2013.05.030

2013, Poster, ENG

Simultaneus Size And Concentration Characterization Of Metallic Nanoparticle Dispersions By Laser-Induced Breakdown Spectroscopy

Koral C (a), Dell'Aglio M. (b), Elrashedy R. (a), Gaudiuso R. (a,b), De Giacomo A (a)

IX INSTM Conference, Bari, 30th June - 3rd July 2013

2013, Poster, ENG

Synthesis Of Silver Nanoparticles By Double Pulse Laser Ablation In Liquids

ElRashedy R. (a), De Giacomo A. (a,b), De Pascale O. (b), Gaudiuso R. (a,b), Koral C. (a), Dell'aglio, M. (b)

IX INSTM, Bari, 30th June - 3rd July 2013

2013, Poster, ENG

Clean production of silver nanoparticles via Laser Ablation and interaction with Ubiquitin

Mangini V., Dell'Aglio M., De Stradis A., De Giacomo A., Gaudiuso R., Natile G., Arnesano F.

EMSLIBS 2013: 7°EURO-MEDITERRANEAN SYMPOSIUM ON LASER INDUCED BREAKDOWN SPECTROSCOPY, Bari, 16-20 Settembre 2013

2013, Poster, ENG

Application of Laser-Induced Breakdown Spectroscopy to investigate the elemental composition of soils, plants and composts in the life cycle

G. S. Senesi (1), M. Dell'Aglio(1), A. De Giacomo(1,2), R. Gaudiuso(1,2), C. Zaccone (3), T. M. Miano(4), O. De Pascale (1)

EMSLIBS 2013, Bari, 16-20 Settembre 2013
InstituteSelected 0/6
    NANOTEC, Istituto di Nanotecnologia (45)
    IC, Istituto di cristallografia (4)
    ISM, Istituto di struttura della materia (3)
    ICCOM, Istituto di chimica dei composti organo metallici (2)
    IPCF, Istituto per i processi chimico-fisici (1)
    IVV, Istituto di virologia vegetale (1)
Author

Gaudiuso Rosalba

TypeSelected 0/6
    Abstract in atti di convegno (16)
    Articolo in rivista (15)
    Poster (10)
    Presentazione (8)
    Contributo in atti di convegno (2)
    Contributo in volume (1)
Research programSelected 0/5
    MD.P03.027.001, Dinamica di Plasmi e Laser-Plasmi (45)
    MD.P03.030.001, Interazione Laser Materia (8)
    PM.P04.011.003, Sviluppo di sorgenti e strumentazione per diffrattometria e spettroscopia, di nuova generazione, per studi strutturali e funzionali di nuovi materiali (4)
    AG.P01.010.001, Interazioni biologiche e molecolari delle piante con virus e agenti patogeni virus-simili (1)
    MD.P03.028.001, Dinamica di plasmi e laser-plasmi (1)
EU Funding ProgramSelected 0/0
No values ​​available
EU ProjectSelected 0/0
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YearSelected 0/5
    2013 (15)
    2014 (15)
    2012 (11)
    2011 (10)
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LanguageSelected 0/2
    Inglese (46)
    Italiano (1)
KeywordSelected 0/30
    LIBS (3)
    Copper-based alloys (2)
    Hydrogen (2)
    Alexandrite (1)
    Archaeological findings (1)
    Balmer series (1)
    Beryllium (1)
    CF-LIBS (1)
    Calibration-free laser-induced breakdown spectroscopy (1)
    Debye-Hückel theory (1)
RESULTS FROM 1 TO 20 OF 52