Scaling phenomena in electrochemical systems
Lene Oddershede
The Niels Bohr Institute, ,Blegdamsvej 17 2100 Copenhagen, Denmark
Abstract:
We present two very different experiments both
involving electrohydrodynamics. One is the electro-
chemical etching of a metallic wire and the other
is the displacement of an initially horizontal
interface between water and oil onto which an
orthogonal electrical field is applied. We have
observed some common behavior of the two systems:
In the dynamical process through which the system
is evolving there exists a critical point around
which several of the parameters describing the
system exhibit scale invariant behavior. One
intriguing fact is that the emerging scaling
exponents describing the two different systems
within the uncertainties are identical.