IR Laser-Irradiation of Metals in Vacuum and Hydrocarbons: Gas Phase Deposition of Metal-Carbon Nanocomposites
Pulsed IR laser-irradiation of Zn, Ni, Fe and Mo in vacuum and in gaseous hydrocarbons (benzene, ethyne) has been studied by using scanning and transmission electron microscopy and X-ray photoelectron, Auger, Fourier transform infrared and Raman spectroscopy for analysis of surface morphology of metal targets and properties of gas-phase deposited nanostructured metal-containing carbonaceous films. The results reveal that the irradiation in vacuum induces ablation of Zn, Ni and Fe and thermal damage in Mo. The ablation is diminished at low pressure of hydrocarbons which are plasma-decomposed to allow gas-phase deposition of metal-containing carbonaceous films containing crystalline Zn and amorphous Ni and Fe nanoparticles. The observed laser-induced formation of amorphous metal nanoparticles incorporated in carbonaceous phase is promising for synthesis of metastable metal nanoparticles surviving ambient conditions.
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Document Type: Research Article
Publication date: 2012-03-01
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- Journal of Advanced Microscopy Research (JAMR) provides a forum for rapid dissemination of important developments in high-resolution microscopy techniques to image, characterize and analyze man-made and natural samples; to study physicochemical phenomena such as abrasion, adhesion, corrosion and friction; to perform micro and nanofabrication, lithography, patterning, micro and nanomanipulation; theory and modeling, as well as their applications in all areas of science, engineering, and medicine.
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