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Les solides luminescents inorganiques : un dopage réussi / Georges Boulon in L'ACTUALITE CHIMIQUE, N° 11 (11/1999)
[article]
Titre : Les solides luminescents inorganiques : un dopage réussi Type de document : texte imprimé Auteurs : Georges Boulon, Auteur Année de publication : 1999 Article en page(s) : p. 96-105 Note générale : Bibliogr. Langues : Français (fre) Catégories : Composés inorganiques
Ions
Ions métalliques
Lasers à solide
Luminophores
Terres raresIndex. décimale : 535.35 Luminescence Résumé : The development of advanced technologies in optical communications, light sources, laser sources, detectors, since 60 years, has been allowed by the synthesis and the spectroscopic studies of both luminescent ion-doped polycristalline, cristalline or vitreous inorganic materials. En ligne : https://new.societechimiquedefrance.fr/numero/les-solides-luminescents-inorganiq [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=7258
in L'ACTUALITE CHIMIQUE > N° 11 (11/1999) . - p. 96-105[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 002154 - Périodique Bibliothèque principale Documentaires Disponible Texture-based characterization of subskin features by specified laser speckle effects at λ = 650 nm region for more accurate parametric 'skin age' modelling / Ahmet B. Orun in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 39, N° 3 (06/2017)
[article]
Titre : Texture-based characterization of subskin features by specified laser speckle effects at λ = 650 nm region for more accurate parametric 'skin age' modelling Type de document : texte imprimé Auteurs : Ahmet B. Orun, Auteur ; H. Seker, Auteur ; V. Uslan, Auteur ; E. Goodyer, Auteur ; G. Smith, Auteur Année de publication : 2017 Article en page(s) : p. 320-326 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Lasers à solide
Peau -- analyse
Peau -- Texture
Perception de l'âge
Réseau bayésienIndex. décimale : 668.5 Parfums et cosmétiques Résumé : OBJECTIF : The textural structure of ‘skin age’-related subskin components enables us to identify and analyse their unique characteristics, thus making substantial progress towards establishing an accurate skin age model.
METHODS : This is achieved by a two-stage process. First by the application of textural analysis using laser speckle imaging, which is sensitive to textural effects within the λ = 650 nm spectral band region. In the second stage, a Bayesian inference method is used to select attributes from which a predictive model is built.
RESULTS : This technique enables us to contrast different skin age models, such as the laser speckle effect against the more widely used normal light (LED) imaging method, whereby it is shown that our laser speckle-based technique yields better results.
CONCLUSION : The method introduced here is non-invasive, low cost and capable of operating in real time; having the potential to compete against high-cost instrumentation such as confocal microscopy or similar imaging devices used for skin age identification purposes.Note de contenu : - MATERIALS AND METHODS : Data sets for laser-based and normal light imaging - System configuration - Laser speckle imaging - Texture analysis method - Bayresian networks
- RESULTS AND DISCUSSION : Optimization of light type and texture measure - Bayesian classification results - Results of laser speckle image-based configurationDOI : 10.1111/ics.12379 Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=28630
in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE > Vol. 39, N° 3 (06/2017) . - p. 320-326[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 18959 - Périodique Bibliothèque principale Documentaires Disponible TiN-coating formation by pulsed Nd:YAG laser irradiation of titanium in nitrogen / Daniel Höche in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 5, N° 4 (12/2008)
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Titre : TiN-coating formation by pulsed Nd:YAG laser irradiation of titanium in nitrogen Type de document : texte imprimé Auteurs : Daniel Höche, Auteur ; Peter Schaaf, Auteur ; Robert Queitsch, Auteur ; Andreas Emmel, Auteur ; Hayo Zutz, Auteur ; Hendrik Schikora, Auteur Année de publication : 2008 Article en page(s) : p. 505-512 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Dureté (matériaux)
Lasers à solide
Nitrure de titane
Revêtements:Peinture
TitaneIndex. décimale : 667.9 Revêtements et enduits Résumé : Titanium was treated by pulsed Nd:YAG laser irradiation in nitrogen atmosphere, which led to nitrogen in-diffusion and TiN coating formation. The thickness of the TiN films was about 1.2 µm and the coatings had a universal hardness of about 11 GPa. The layers were investigated by X-ray diffraction at grazing incidence and resonant nuclear reaction analysis for nitrogen depth profiling. Fitting of the experimental depth profiles gave information about the physical processes (diffusion time and depth) with respect to the achieved hardness. The microscopic properties like lattice constants and the variation of the nitrogen content were evaluated. A relationship between laser scan parameters and coating properties could be revealed. Thus, it was possible to determine the physical limits such as film thickness, nitrogen content, and hardness of this direct laser synthesis. DOI : 10.1007/s11998-008-9093-9 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-008-9093-9.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3478
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Code-barres Cote Support Localisation Section Disponibilité 010911 - Périodique Bibliothèque principale Documentaires Disponible