Self-organization of suspended gold nanowires studied by in situ UHV electron microscopy

We studied the formation of gold nanowires using an ultra-high- vacuum electron microscope equipped with a field emission gun. An electron beam of a very high dose (300 A cm exp -2 ) was used to generate holes in the gold (001) film. Bridges formed between closely neighbouring holes were irradiated...

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Bibliographic Details
Published in:Journal of electron microscopy 1999-01, Vol.48, p.1081-1085
Main Authors: Kondo, Y, Kimata, H, Ohnishi, H, Takayanagi, K
Format: Article
Language:English
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Summary:We studied the formation of gold nanowires using an ultra-high- vacuum electron microscope equipped with a field emission gun. An electron beam of a very high dose (300 A cm exp -2 ) was used to generate holes in the gold (001) film. Bridges formed between closely neighbouring holes were irradiated moderately further. A narrow bridge along the [110] direction turned into a gold nanowire with a regular form. Surface layers of the wire were stripped off one- by-one by surface diffusion. We discussed the diffusion behaviour by taking the structure of the 2-nm-thick wires into account, which has surface reconstruction similar to the 5 mult 20 reconstruction of the gold (100) surface.
ISSN:0022-0744