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Highly controllable direct femtosecond laser writing of gold nanostructures on titanium dioxide surfaces

Abstract

A Highly reproducible and controllable deposition procedure for gold nanostructures on a titanium dioxide (TiO2) surface using femtosecond laser light is demonstrated. This is realized by precise focusing onto the TiO2 surface in the presence of pure gold ion solution. The deposition is demonstrated both in dot array and line structures. Thanks to the multi-photon excitation, we observe that the deposition area of the nanostructures can be confined to a degree far greater than the diffraction limited focal spot. Finally, we demonstrate that catalytic activity with visible light irradiation is enhanced, proving the applicability of our new deposition technique to the catalytic field.

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Publication details

The article was received on 15 Jun 2017, accepted on 09 Aug 2017 and first published on 09 Aug 2017


Article type: Paper
DOI: 10.1039/C7NR04299J
Citation: Nanoscale, 2017, Accepted Manuscript
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    Highly controllable direct femtosecond laser writing of gold nanostructures on titanium dioxide surfaces

    Y. Fujita, R. Aubert, P. Walke, H. Yuan, B. Kenens, T. Inose, C. Steuwe, S. Toyouchi, B. Fortuni, M. Chamtouri, K. P. F. Janssen, S. De Feyter, M. B. Roeffaers and H. Uji-i, Nanoscale, 2017, Accepted Manuscript , DOI: 10.1039/C7NR04299J

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