Nanowire formation by gold nano-fragment coalescence on quantized vortices in He II

Moroshkin, Peter; Lebedev, Victor; Grobéty, Bernard; Neururer, Christoph; Gordon, E. B.; Weis, Antoine

doi:10.1209/0295-5075/90/34002

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Journal article

Nanowire formation by gold nano-fragment coalescence on quantized vortices in He II

Moroshkin, Peter Department of Physics, University of Fribourg, Switzerland
Lebedev, Victor Department of Physics, University of Fribourg, Switzerland
Grobéty, Bernard Department of Geoscience, University of Fribourg, Switzerland
Neururer, Christoph Department of Geoscience, University of Fribourg, Switzerland
Gordon, E. B. Institute of Problems of Chemical Physics RAS, Chernogolovka, Russia
Weis, Antoine Department of Physics, University of Fribourg, Switzerland

10.05.2010

Published in:

Europhysics Letters. - 2010, vol. 90, no. 3, p. 34002

English We demonstrate that laser ablation of a gold target immersed in superfluid and normal fluid helium leads to the formation of elongated gold nano-fragments. In the superfluid phase these nano-fragments aggregate into filaments with extremely large aspect ratios displaying metallic electric conductivity. We attribute this unusual structure to the coalescence of gold particles trapped on quantized vortices. Our observations suggest new ways to visualize the structure of quantized vortex bundles and a new approach for producing centimeter-long metal nanowires.

Faculty

Faculté des sciences et de médecine

Department

Département de Physique, Département de Géosciences

Language