Application of target factor analysis and linear least squares fitting to extracting chemical information from Auger depth profiles of a Mo/Si thin multilayer system Shape information from a critical point analysis of calculated electron density maps: application to DNAdrug systems AIP Conf.

No abstract

The anodic oxidation of copper in LiOH solution has been investigated by galvanostatic, potentiostatic, and voltammetric sweep techniques. The structure and composition of the films were determined by x-ray and electron diffraction, and by scanning electron microscopy. Cu(OH)2 forms in two layers: a base layer grown by a solid-state mechanism and an upper layer of individual crystals nucleated and grown from solution. The size and number of upper layer crystals are dependent on electrode potential. More anodic potentials produce a large number of randomly deposited crystals, whereas less anodic potentials result in fewer, more highly developed crystals. Increased stirring results in a greater loss of material into solution, and in the extreme, nucleation and growth are completely prevented. For sufficiently low crystallization rates, produced galvanostatically, the thermodynamically stable phase, CuO, is formed. At higher rates the formation of Cu(OH)2 dominates. A nucleation and growth mechanism is given and discussed with reference to other metal systems. ExperimentalMeasurements were made on copper electrodes (99.99% purity) of 5.0 cm 2 geometric surface area. Rotating disk experiments were made on 2.5 cm 2 copper disks embedded in Teflon. Samples were polished

No abstract

Die Kinetik und der Mechanismus der Kathoden‐ und Anodenprozesse an Cu‐ Elektroden in wäßriger KOH‐Lösung werden voltammetrisch untersucht.