“…While silver was extensively investigated [7,14,20,[21][22][23][24], by contrast gold systems, such as semi-infinite media [25], thin films [26], quantum wires [27,28], and nanoparticles [29] have attracted relevant interest only in recent years as a consequence of the discovery that Au is a selective catalyst for a variety of important chemical reactions [30][31][32][33][34][35][36][37][38][39].…”