Au nanostructure fabrication by pulsed laser deposition in open air: Influence of the deposition geometry

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© 2017 Nikov et al. We present a fast and flexible method for the fabrication of Au nanocolumns. Au nanostructures were produced by pulsed laser deposition in air at atmospheric pressure. No impurities or Au compounds were detected in the resulting samples. The nanoparticles and nanoaggregates produced in the ablated plasma at atmospheric pressure led to the formation of chain-like nanostructures on the substrate. The dependence of the surface morphology of the samples on the deposition geometry used in the experimental set up was studied. Nanocolumns of different size and density were produced by varying the angle between the plasma plume and the substrate. The electrical, optical, and hydrophobic properties of the samples were studied and discussed in relation to their morphology. All of the nanostructures were conductive, with conductivity increasing with the accumulation of ablated material on the substrate. The modification of the electrical properties of the nanostructures was demonstrated by irradiation by infrared light. The Au nanostructures fabricated by the proposed technology are difficult to prepare by other methods, which makes the simple implementation and realization in ambient conditions presented in this work more ideal for industrial applications.




Nikov, R. G., Dikovska, A. O., Nedyalkov, N. N., Avdeev, G. V., & Atanasov, P. A. (2017). Au nanostructure fabrication by pulsed laser deposition in open air: Influence of the deposition geometry. Beilstein Journal of Nanotechnology, 8(1), 2438–2445.

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