Fractality and Impedance of Electrochemically Grown Silver Deposits

Abstract

The frequency dispersions of the impedance of smooth and ramified silver deposits, in their oxidized and unoxidized states, were measured. We sought to correlate the constant phase angle exponent with the surface fractal dimension of the deposits, and compare the results with present theories. A monotonic relationship between the two parameters was found. The results agree with theoretical predictions that the functional relationship is insensitive to the dielectric properties of the interface. ) unless CC License in place (see abstract). ecsdl.org/site/terms_use address. Redistribution subject to ECS terms of use (see 157.82.153.40 Downloaded on 2015-05-14 to IP 5 ! ] ! J J J 4 3

Electroless and Electrodeposition of Silver

“…In the material sciences, the importance of fractals is that it leads the way to the study and quantitative analysis of the microstructure of metals in fashion hitherto thought impossible. Kahanda and Tomkiewicz [39], for instance, undertook the issue of fractality in regard to the impedance of electrochemically grown silver deposits. (See references in [39] regarding fractals in general.)…”

“…Kahanda and Tomkiewicz [39], for instance, undertook the issue of fractality in regard to the impedance of electrochemically grown silver deposits. (See references in [39] regarding fractals in general.) To illustrate the fractal nature of some electrodeposits, we present in Figure 5.3 a photograph of metal clusters obtained after 15 min in a bath with no additives.…”

PECVD coatings: analysis of the interface with the metallic substrate

“…The exposed sample area was 13 cm 2 . Impedance spectra have been analyzed on the basis of a suitable equivalent circuit model 3,4 in order to obtain the value of the charge transfer resistance, R ct , which can be directly related to the protective effectiveness of the coating.…”

Fractal dimensions of niobium oxide films probed by protons and lithium ions

“…Fractal dimension analysis gives important information about the structure of the surface. Various physical and chemical [8][9][10][11][12][13] methods have been used for determination of fractal dimension. Two of the most important methods for calculating fractal dimension are CV and AFM.…”