On the Stability of Electrochemically Generated Nanoclusters-A Computer Simulation

On the surface properties of lead structures on Au(111), an atom dynamic approach

“…Subsequently, the tip was withdrawn with the same speed, a connective neck formed, which broke and left a cluster behind on the surface. Further details of our simulation procedure have been given elsewhere [2,3,6].…”

“…Our simulations are a variant of the method that we have employed in our previous works [2,3,6]. Our model system consists of a semi-ellipsoidal core of fixed gold atoms representing the STM tip, from which several layers of mobile lead atoms are suspended.…”

“…However, it now seems that the stability of the clusters is based an the formation of a stable alloy between the deposit and the substrate. This explanation is not only supported by computer simulations [2,3], but also by recent experiments [4,5].…”

“…As far as cluster formation with the electrochemical STM is concerned, experiments have revealed only small and rather unstable clusters. Therefore, we have extended our previous studies [2,3,6] of cluster formation to the case of lead deposits on Au(1 1 1), and performed extensive 0022-0728/$ -see front matter Ó 2005 Elsevier B.V. All rights reserved. doi:10.1016/j.jelechem.2004.11.045 molecular dynamics simulations on the formation and stability of such clusters.…”

Comparative STM studies on island equilibrium shapes, shape fluctuations and island coalescence on Au(001) electrodes in chloric and sulfuric acid solutions

“…The reason lies in the presence of the liquid, the ions contained in the electrolyte and their interaction with the solid via direct chemical interactions, adsorption phenomena and charge transfer between the solid and the liquid. To date there is only few people who dedicated their scientific focus to atom migration at the solid liquid interface and to the quantitative analysis and the understanding of diffusion processes on solid surfaces in contact with a liquid [3][4][5][6][7][8][9][10][11][12][13][14][15].…”