Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2006-10-06
Physica Status Solidi, 204, 1677 - 1685, 2007
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
7 pages, 5 figures, submitted to PSS
Scientific paper
10.1002/pssa.200675319
Electrochemical methods have recently become an interesting tool for fabricating and characterizing nanostructures at room temperature. Simplicity, low cost and reversibility are some of the advantages of this technique that allows to work at the nanoscale without requiring sophisticated instrumentation. In our experimental setup, we measure the conductance across a nanocontact fabricated either by dissolving a macroscopic gold wire or by depositing gold in between two separated gold electrodes. We have achieved a high level of control on the electrochemical fabrication of atomic-sized contacts in gold. The use of electrochemistry as a reproducible technique to prepare nanocontacts will open several possibilities that are not feasible with other methodologies. It involves, also, the possibility of reproducing experiments that today are made by more expensive, complicated or irreversible methods. As example, we show here a comparison of the results when looking for shell effects in gold nanocontacts with those obtained by other techniques.
Calvo M. R.
Climent Vicent
Mares A. I.
Untiedt C.
van Ruitenbeek Jan M.
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