Spectral signatures of the surface reconstructions of Au(110)/electrolyte interfaces

It is demonstrated that the (1 x 1) structure and the (1 x 2) and (1 x 3) surface reconstructions that occur at Au(110)/electrolyte interfaces have unique optical fingerprints. The optical fingerprints are potential, pH and anion dependent and have potential for use in monitoring dynamic changes at this interface. We also observe a specific reflection anisotropy spectroscopy signature that may arise from anions adsorbed on the (1 x 1) structure of Au(110). (fast track communication)