Search Results - "Oujja, M"

Evaluation of laser cleaning for the restoration of tarnished silver artifacts by Palomar, T., Oujja, M., Llorente, I., Ramírez Barat, B., Cañamares, M.V., Cano, E., Castillejo, M.

“…•Cyclic application of Q-switched Nd:YAG laser cleaning induces irreversible changes on pure silver.•Laser cleaning using Q-switched Nd:YAG laser at 1064nm…”
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Multiphoton Excitation Fluorescence Microscopy and Spectroscopic Multianalytical Approach for Characterization of Historical Glass Grisailles by Oujja, M., Agua, F., Sanz, M., Morales-Martin, D., García-Heras, M., Villegas, M.A., Castillejo, M.

“…The preservation of the integrity of artworks and cultural heritage items during characterization and conservation operations is of high priority, therefore,…”
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Spatiotemporally resolved optical emission spectroscopy and harmonic generation in Cu plasmas by Oujja, M., Camacho, J.J., Sanz, M., Lopez-Quintas, I., Castillejo, M., de Nalda, R.

“…Laser-induced ablation plasmas of Cu generated by nanosecond 1064 nm pulses have been examined as media for third harmonic generation of a nanosecond driving…”
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Harmonic generation by atomic and nanoparticle precursors in a ZnS laser ablation plasma by Oujja, M., Lopez-Quintas, I., Benítez-Cañete, A., de Nalda, R., Castillejo, M.

“…[Display omitted] •Plume species in infrared ns laser ablation of ZnS studied by low-order harmonic generation.•Different spatiotemporal properties of…”
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Comparative SERS effectiveness of silver nanoparticles prepared by different methods: A study of the enhancement factor and the interfacial properties by Cañamares, M.V., Garcia-Ramos, J.V., Sanchez-Cortes, S., Castillejo, M., Oujja, M.

“…Different Ag nanoparticles were prepared by four different methods (chemical reduction with trisodium citrate, chemical reduction with hydroxylamine…”
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Effect of biological colonization on ceramic roofing tiles by lichens and a combined laser and biocide procedure for its removal by Pena-Poza, J., Ascaso, C., Sanz, M., Pérez-Ortega, S., Oujja, M., Wierzchos, J., Souza-Egipsy, V., Cañamares, M.V., Urizal, M., Castillejo, M., García-Heras, M.

“…Biodeterioration damage is an important issue in conservation and restoration of built heritage, especially when ceramic materials are used. Biological…”
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Wavelength and pulse duration effects on laser induced changes on raw pigments used in paintings by Oujja, M., Sanz, M., Rebollar, E., Marco, J.F., Domingo, C., Pouli, P., Kogou, S., Fotakis, C., Castillejo, M.

“…[Display omitted] ► Laser irradiation of pigments studied using different wavelengths and pulse duration. ► Vermilion was discolored due to the transformation…”
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Frequency mixing in boron carbide laser ablation plasmas by Oujja, M., Benítez-Cañete, A., Sanz, M., Lopez-Quintas, I., Martín, M., de Nalda, R., Castillejo, M.

“…•Two-color frequency mixing has been studied in a laser ablation boron carbide plasma.•A space- and time-resolved study mapped the nonlinear optical species in…”
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Laser induced breakdown spectroscopy for analysis and characterization of degradation pathologies of Roman glasses by Palomar, T., Oujja, M., García-Heras, M., Villegas, M.A., Castillejo, M.

“…The feasibility and possibilities of laser induced breakdown spectroscopy (LIBS) in the full study of non-destructible historic glasses have been explored in…”
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Laser cleaning of 19th century Congo rattan mats by Carmona, N., Oujja, M., Roemich, H., Castillejo, M.

“…• In this study we present a laser cleaning approach for the restoration of 19th century rattan mats. • We found an efficient removal of the dark carbonaceous…”
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Three dimensional microstructuring of biopolymers by femtosecond laser irradiation by Oujja, M., Pérez, S., Fadeeva, E., Koch, J., Chichkov, B. N., Castillejo, M.

“…A sequence of single femtosecond pulses is used to create a pattern of laser affected spots at increasing depths below the surface of transparent biopolymer…”
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Laser-induced fluorescence and FT-Raman spectroscopy for characterizing patinas on stone substrates by Oujja, M., Vázquez-Calvo, C., Sanz, M., de Buergo, M. Álvarez, Fort, R., Castillejo, M.

“…This article reports on a compositional investigation of stone patinas: thin colored layers applied for protective and/or aesthetic purposes on architectural…”
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Nd-YAG laser irradiation damages to Verrucaria nigrescens by Speranza, M., Sanz, M., Oujja, M., de los Rios, A., Wierzchos, J., Pérez-Ortega, S., Castillejo, M., Ascaso, C.

“…Epilithic and endolithic microorganisms and lichens play an important role in stone biodeterioration. The structural and physiological damage caused by…”
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Analysis of corroded glasses by laser induced breakdown spectroscopy by Carmona, N., Oujja, M., Rebollar, E., Römich, H., Castillejo, M.

“…In the present work, the possibilities of application of laser-induced breakdown spectroscopy for the diagnosis and analysis of uncorroded and artificially…”
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Nanofoaming in the surface of biopolymers by femtosecond pulsed laser irradiation by Gaspard, S., Oujja, M., de Nalda, R., Abrusci, C., Catalina, F., Bañares, L., Lazare, S., Castillejo, M.

“…In this work, the nanostructuring induced in femtosecond (fs) laser irradiation of biopolymers is examined in self-standing films of collagen and gelatine…”
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Generation of low-order harmonics in laser ablation plasmas by López-Arias, M., Oujja, M., Sanz, M., de Nalda, R., Ganeev, R.A., Castillejo, M.

“…The third and fifth harmonics of a pulsed infrared laser (1064 nm) delivering pulses of nanosecond duration have been generated in the laser ablation plasmas…”
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The laser-induced discoloration of stonework; a comparative study on its origins and remedies by Pouli, P., Fotakis, C., Hermosin, B., Saiz-Jimenez, C., Domingo, C., Oujja, M., Castillejo, M.

“…For understanding the phenomena associated with the discoloration observed in some cases of infrared laser cleaned stonework surfaces, a comparative study of…”
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Laser induced foaming and chemical modifications of gelatine films by Gaspard, S., Oujja, M., Abrusci, C., Catalina, F., Lazare, S., Desvergne, J.P., Castillejo, M.

“…This paper reports on the investigation of the microfoaming and chemical modifications following single-pulse laser irradiation conducted at 248 nm (KrF…”
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Submicron foaming in gelatine by nanosecond and femtosecond pulsed laser irradiation by Gaspard, S., Oujja, M., de Nalda, R., Abrusci, C., Catalina, F., Bañares, L., Castillejo, M.

“…We compare the foaming characteristics induced by irradiation with single ns and fs laser pulses of UV, VIS and IR wavelengths on gelatines differing in gel…”
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Femtosecond laser deposition of TiO2 by laser induced forward transfer by SANZ, M, WALCZAK, M, OUJJA, M, DOMINGO, C, KLINI, A, PAPADOPOULOU, E. L, FOTAKIS, C, CASTILLEJO, M

“…Femtosecond lasers have been used for laser induced forward transfer (LIFT) of TiO2, a wide-band semiconductor with many industrial and research applications…”
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