Cultural Heritage Applications of LIBS

Anglos, Demetrios; Detalle, Vincent

doi:10.1007/978-3-642-45085-3_20

Cited by 37 publications

(23 citation statements)

References 114 publications

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“…In recent years, studying on laser-induced breakdown spectroscopy (LIBS) has been increased due to its expanding applications in geological material [1][2][3][4][5][6][7][8], cultural heritage [9][10][11][12][13], works of art [14][15][16][17][18], environmental monitoring intermediate mentioned parameters. Farid et al [58] have studied the influences of ambient gases of air, argon and helium at different pressures on laser-induced copper plasma and its surface morphology.…”

Section: Introductionmentioning

confidence: 99%

Quantitative analysis of aluminum samples in He ambient gas at different pressures in a thick LIBS plasma

Rezaei

Tavassoli

2015

Appl. Phys. B

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radioactive, high temperature, toxic materials) [19][20][21][22][23][24][25], industry [26][27][28][29][30][31], architecture, medical (noninvasive study of human teeth and hair, diagnosis of cancer tissue, DNA analysis) [32][33][34][35][36][37], military and civil security (detection of explosive material and biological weapons) [38][39][40][41][42][43]. Most of these applications are investigated under the condition of earth's atmosphere (i.e., at 760 Torr in air atmosphere) in order to determine the selected material compositions. Nevertheless, interest in LIBS in other ambient gases with various circumstances has been grown because of its practical application. It should be mentioned that nowadays wide applications of gas effects in space exploration (such as utilizing LIBS for investigating specific conditions on Venus and Mars) [4,44,45] are studied. For instance, in scope of gas pressure, the high-pressure environment serves to replicate the conditions of a nuclear reactor or simulate some planet environments [46]. At the opposite, reduced gas pressures or vacuum is applied for determination of isotope ratios [47][48][49], synthesis of nanoparticles and thin films.Different research groups [50][51][52][53][54][55] have investigated the quantitative analysis of plasma parameters and spectral line properties in LIBS technique by considering the influences of gas conditions. For instance, Effenberger et al. [56] have properly presented a review of applications of different gas effects in LIBS experiment. They have comprehensively mentioned the results of various groups about the effects of atmosphere compositions and gas pressures (higher and lower than 760 Torr) on plasma parameters and spectral line characteristics. Dawood et al. [57] have investigated the effects of gas nature and its pressure on temporal distribution of aluminum plasma. They have explained that both plasma temperature and electron density grow with ambient gas pressure. In addition, they have shown that argon provides the highest temperature and plasma density, helium provides the lowest one, and nitrogen produces Abstract In this paper, the influences of He ambient gas on aluminum emissions are investigated by experimental analysis of LIBS spectrum. Plasma is produced by focusing of a Nd:YAG laser pulse at a wavelength of 1064 nm on Al standard samples. In this work, the effects of helium atmosphere at different pressures on the amount of spectral self-absorption are studied. The results are discussed by utilizing two approaches: the curve of growth and calibration curve. It is seen that by increasing the gas pressure, the self-absorption enhances. Also, a new method of applying one standard sample instead of other traditional techniques is introduced for concentration prediction. The presented method would be helpful for the situation in which supplying standard samples is not very easy. Then, the accuracy of this new method can be checked by comparison of concentration prediction of the standard samples with their real concentrations.

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Section: Introductionmentioning

confidence: 99%

Quantitative analysis of aluminum samples in He ambient gas at different pressures in a thick LIBS plasma

Rezaei

Tavassoli

2015

Appl. Phys. B

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“…Its micro-destructiveness, with ablated sample portions in the order of fractions of micrograms and induced damage are virtually invisible to the naked eye. It has the potential for fast multi-elemental analysis and capability of simultaneous detection of major and trace elements [15]. Moreover, LIBS requires no surface preparation and is capable of in situ depth profile analysis, if spectra on the same spot are recorded individually [16].…”

Section: Laser-induced Breakdown Spectroscopy (Libs)mentioning

confidence: 99%

Non-Linear Microscopy: A Well-Established Technique for Biological Applications towards Serving as a Diagnostic Tool for in situ Cultural Heritage Studies

Mari

Filippidis

2020

Sustainability

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A range of sophisticated imaging techniques have been developed in recent years that can reveal the surface structure of cultural heritage objects with varying precision. In combination with various spectroscopic methods, they allow the study of the chemical composition of the object; thus, conclusions can be drawn about the origin of the object or its initial components, method, or time of creation, authenticity, mechanisms of degradation, and ways of further conservation. At present, different techniques can be applied to a wide range of cultural heritage objects, such as varnishes, paintings, archaeological objects, binding media, paper-based documents, parchments, marbles, frescoes, as well as various objects made of leather, fabric, stone, ceramics and glass, wood, or metal. One of the main needs in the study of cultural heritage (CH) is the transportability/portability of the research equipment, since many pieces under investigation cannot be moved to the laboratory, either because of their size, inseparability (for example, frescoes on walls, mural paintings in caves), or the threat of damage. In this work, we briefly overview the main optical- and laser-based methods used for the study of cultural heritage objects indicating the scope of their application, and we focus on the applications of non-linear microscopic methods for the investigation of a series of artifacts. We also discuss all the requirements for the construction of a prototype transportable non-linear optical system that will be used as a novel diagnostic tool for in situ studies of CH assets. The availability of such a transportable workstation will significantly improve the study and characterization of various types of CH objects and will constitute an extremely useful diagnostic tool for heritage scientists dealing with a variety of investigations.

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“…Therefore, having detailed composition of the CH objects, ensure the products used to restore are easily removed for future treatment and will not cause further damage. Among the scientific analytical techniques used for material composition characterization, the laser technology based spectroscopic techniques are widely employed on cultural heritage for the research and development activities, including Raman spectroscopy [1][2][3], laser induced fluorescence (LIF spectroscopy) [4][5][6][7][8], laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) [9-11and laser-induced breakdown spectroscopy (LIBS) [12][13][14]. From CH objects comprised of a vast variety of materials LIBS technique being straightforward, can be applied to all types of samples without any preparation.…”

Section: Introductionmentioning

confidence: 99%

Influence of ns-laser wavelength in laser-induced breakdown spectroscopy for discrimination of painting techniques

Bai

Syvilay

Wilkie-Chancellier

et al. 2017

Spectrochimica Acta Part B: Atomic Spectroscopy

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The influence of ns-laser wavelength to discriminate ancient painting techniques such as are fresco, casein, animal glue, egg yolk and oil was investigated in this work.This study was carried out with a single shot laser on samples covered by a layer made of a mixture of the cinnabar pigment and different binders. Three wavelengths based on Nd: YAG laser were investigated (1064, 532 and 266 nm). The plasma is controlled at the same electron temperature after an adjustment of pulse energy for these three wavelengths on a fresco sample without organic binder. This approach allows to eliminate the effects of laser pulse energy and the material laser absorption.Afterwards, the emission spectra were compared to separate different techniques. The organic binding media has been separated based on the relative emission intensity of the present CN or C 2 rovibrational emissions. In order to test the capability of separating or identifying, the chemometric approach (PCA) was applied to the different matrix. The different solutions in term of wavelength range to optimise the identification was investigated. We focused on the evaluation for the laser wavelength to insure a better separation. The different capacity was interpreted by differentiating 1 Corresponding author. E-mail address: vincent.detalle@culture.gouv.fr the binders by the altered interaction mechanisms between the laser photon and the binders. Also, the electron temperature in the plasma was estimated, which provided the evidences to our findings.

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Cultural Heritage Applications of LIBS

Cited by 37 publications

References 114 publications

Quantitative analysis of aluminum samples in He ambient gas at different pressures in a thick LIBS plasma

Quantitative analysis of aluminum samples in He ambient gas at different pressures in a thick LIBS plasma

Non-Linear Microscopy: A Well-Established Technique for Biological Applications towards Serving as a Diagnostic Tool for in situ Cultural Heritage Studies

Influence of ns-laser wavelength in laser-induced breakdown spectroscopy for discrimination of painting techniques

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