RESULTS AND DISCUSSION 31 Electrocapillary Curves
The electrocapillary curve of a solid metal electrode is more difficult to measure than that of a liquid electrode, because of problems of surface cleanliness. The most widely used approach has been the bending-beam method, which was originally developed by Fredlein et al. 28 using large samples. More recently Raiteri and Butt 29 have used gold electrodes deposited on an AFM cantilever to record electrocapillary curves. As a calibration of our instrument we have recorded electrocapillary curves...
Topographic Changes during Silver Electrodissolution in Aqueous 1 M HCIO4
Topographic changes occur at the terrace domain of a silver single crystal immersed in aqueous 1 M perchloric acid at 298 K, and held at constant electrodissolution current density j and temperature. These changes can be followed by in-situ STM sequential imaging 25 , At low values of j j lt 15 aA cm2 silver electrodissolution proceeds at step edges Fig. 4 without roughening Fig. 5 . In this case, the dynamic scaling analysis of STM profiles results in 0, a figure which is consistent with a...
MP Soriaga K Itaya JL Stickney
3 Results and discussion 269 3.1 Adsorbate-catalyzed dissolution Pd l 11 - V3 x V3 R30 -I 269 3.2 Electrochemical atomic layer epitaxy Se on Au 100 272 Summary. The development of in-situ scanning tunneling microscopy STM has opened new avenues of research in electrochemical surface science. By itself, this nanometer-scale structural tool cannot be regarded as a panacea for the many problems that confront researchers in the interfacial sciences. However, when employed in tandem with other...
The Dynamic Scaling Theory
The concept of scaling was introduced in the field by Family and Vicsek in 1985 10 to provide a framework for understanding fractal-like topologies of nonequilibrium surfaces. The dynamic scaling theory describes the development of a contour .Drop 2, where Drop is the topological dimension , on a flat surface of size L on the x-axis at time t 0 Fig. 1 , and roughness surface growth proceeds in a single direction normal to L z-axis increasing in height, h, without overhangings. The instantaneous...