Hydrogen-assisted stabilization of Ni nanowires in solution

Details Hydrogen-assisted stabilization of Ni nanowires in solution Hydrogen-assisted stabilization of Ni nanowires in solution

2005-06-30

arxiv.org/abs/cond-mat/0506789v1

Physics

Condensed Matter

Materials Science

4 pages, 3 figures; to appear in Appl. Phys. Lett

Scientific paper

10.1063/1.2001142

We have studied conductance characteristics of mechanically fabricated Ni nanoconstrictions under controlling electrochemical potential and pH of the electrolyte. Conductance histogram showed clear feature peaked at 1-1.5 $G_{0}$ (=$2e^{2}/h$) when the potential of the constriction was kept at more negative potential than -900 mV vs. Ag/AgCl in pH=3.7. Comparable feature also appeared at more positive potential when lower pH solution was used. We have revealed that Ni mono atomic contact or mono atomic wire can be stabilized in solution at room temperature under the hydrogen evolution.

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