26 July 2011 Aluminum nanoparticles production by laser ablation in liquids
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Proceedings Volume 8001, International Conference on Applications of Optics and Photonics; 80012G (2011) https://doi.org/10.1117/12.894525
Event: International Conference on Applications of Optics and Photonics, 2011, Braga, Portugal
Abstract
Aluminium nanoparticles were produced by pulsed laser ablation of a sample of pure aluminium situated in distilled water. This technique provides the possibility to generate a large variety of nanoparticles that are free of both surfaceactive substances and counter-ions The sample was irradiated by the focused output of the third harmonics of pulsed nanosecond Nd : YAG laser operating at 10 Hz frequency. The typical thickness of the liquid above the target was 10 mm. In order to select the most efficient material removal conditions the irradiation print on the ablated surface was analyzed as a function of the irradiation parameters (incident laser fluence, irradiation pulses number or irradiation time) with optical microscopy and white light interferometry. The presence of the ablated aluminium nanoparticles in the liquid was evidenced by SEM. For SEM measurement, one drop of solution containing Al nanoparticles was placed on a gold coated silicon substrate and dried. The minimum diameter of nanoparticles estimated by SEM was under 100 nm. The SEM results show also clusters of spherical particles together with well-defined singles. In order to improve the quantity of the ablated material the irradiation cell was mounted on a computer-driven X-Y stage and translated during laser exposure.
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V. Damian, V. Damian, C. Udrea, C. Udrea, M. Bojan, M. Bojan, C. Luculescu, C. Luculescu, A. Armaselu, A. Armaselu, I. Apostol, I. Apostol, } "Aluminum nanoparticles production by laser ablation in liquids", Proc. SPIE 8001, International Conference on Applications of Optics and Photonics, 80012G (26 July 2011); doi: 10.1117/12.894525; https://doi.org/10.1117/12.894525
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