Though the change in U can be large, it should not be critical to the effects studied in this paper. Indeed, they depend on the value of ε f+1-ε f , but this difference is a weak function of U. For example, for a noble metal sphere with 338 conduction electrons, we get ε f+1-ε f =0.69 eV at U=9.8 eV, and ε f+1-ε f =0.74 eV if U→∞. Conclusion In conclusion, the statistical properties, conductivity, and capacitance
of a single nanometer-sized metal sphere depends very strongly on the number of conduction electrons N in the range from 200 to 2,000. In particular, the DC conductivity drops by several orders of magnitude if N is equal to one of the magic numbers. For instance, addition of two electrons to a 336-atom noble metal sphere should reduce both the FG-4592 price conductivity and capacitance of
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