Mark E. Orazem

Learn More
I. Theory Bryan Hirschorn,* Mark E. Orazem,** Bernard Tribollet,** Vincent Vivier,*** Isabelle Frateur, and Marco Musiani*** Department of Chemical Engineering, University of Florida, Gainesville, Florida 32611, USA Laboratoire Interfaces et Systemes Electrochimiques, UPR 15 du CNRS, Université Pierre et Marie Curie, 75252 Paris cedex 05, France Laboratoire(More)
In neuroprosthetic applications, long-term electrode viability is necessary for robust recording of the activity of neural populations used for generating communication and control signals. The corrosion of tungsten microwire electrodes used for intracortical recording applications was analyzed in a controlled bench-top study and compared to the corrosion(More)
The Global and Local Impedance Response of a Blocking Disk Electrode with Local Constant-Phase-Element Behavior Vicky Mei-Wen Huang,* Vincent Vivier,** Isabelle Frateur, Mark E. Orazem,*** and Bernard Tribollet** Department of Chemical Engineering, University of Florida, Gainesville, Florida 32611, USA UPR 15 du CNRS, Laboratoire Interfaces et Systèmes(More)
A bench-top experimental approach is described for estimation of the polarization behaviour of pipeline steel as a function of the time-dependent formation of scale and calcareous deposits in simulated soil leachates. A three-time constant process model provided a common set of parameters for a given soil environment and level of aeration. The parameters(More)
Constant-phase elements (CPE) are used extensively in equivalent electrical circuits for fitting of experimental impedance data. The CPE behavior is generally attributed to distributed surface reactivity, surface inhomogeneity, roughness or fractal geometry, electrode porosity, and to current and potential distributions associated with electrode geometry.(More)
To relate changes in the electrochemical impedance spectra to the progression and mechanism of skin damage arising from exposure to dimethyl sulfoxide (DMSO). Electrochemical impedance spectra measured before and after human cadaver skin was treated with neat DMSO or phosphate buffered saline (control) for 1 h or less were compared with electrical circuit(More)
The use of the Kramers-Kronig (KK) relations to evaluate the consistency of impedance data has been limited by the fact that the experimental frequency domain is necessarily finite. Current algorithms do not distinguish between the residual errors caused by a frequency domain that is too narrow and discrepancies caused by a system which does not satisfy the(More)
External corrosion is commonly mitigated by coating the structure with a high resistance film and by employing cathodic protection (CP) to protect regions that are inadequately coated or where the coating has degraded. Defects in the coating are termed holidays, and such holidays can expose bare steel. The objective of this paper is to explore the(More)