In the solvent, there is a significant oscillation of the charge density in the first 7-10 Å adjacent to the metal surface. This is largely due to orientational preferences in the water at the surface. This has been observed for planar gold surfaces, with orientational correlations also extending 7-10 Å from the surface. Similar water orientational preferences have also been observed for water confined between graphene sheets. 37 Note that the polarizability of the metal produces significantly larger surface charge density in the nanospheres than in the planar interfaces. The oscillatory charge density in the solution phase is largely due to water orientational preferences at the metal surface that damp out after a few solvent layers.