@C01371@ and @C01141@ in immediate contact with a surface are said to be located in the Stern layer, and form with the fixed charge a molecular capacitor.
Source: PAC, 1972, 31, 577. (Manual of Symbols and Terminology for Physicochemical Quantities and Units, Appendix II: Definitions, Terminology and Symbols in Colloid and Surface Chemistry) on page 618 [Terms] [Paper]