The Experts below are selected from a list of 300 Experts worldwide ranked by ideXlab platform
Per Arne Rikvold - One of the best experts on this subject based on the ideXlab platform.
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New Cyclic Voltammetry method for examining phase transitions: Simulated results
Journal of Electroanalytical Chemistry, 2007Co-Authors: I. Abou Hamad, Daniel T. Robb, Per Arne RikvoldAbstract:We propose a new experimental technique for Cyclic Voltammetry, based on the first-order reversal curve (FORC) method for analysis of systems undergoing hysteresis. The advantages of this electrochemical FORC (EC-FORC) technique are demonstrated by applying it to dynamical models of electrochemical adsorption. The method can not only differentiate between discontinuous and continuous phase transitions, but can also quite accurately recover equilibrium behavior from dynamic analysis of systems with a continuous phase transition. Experimental data for EC-FORC analysis could easily be obtained by simple reprogramming of a potentiostat designed for conventional Cyclic-Voltammetry experiments.Comment: 18 pages, 7 figures, accepted for publication in Journal of Electroanalytical Chemistry, changes in title, abstract and figure
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New Cyclic Voltammetry method for examining phase transitions: Simulated results
Journal of Electroanalytical Chemistry, 2006Co-Authors: I. Abou Hamad, Daniel T. Robb, Per Arne RikvoldAbstract:We propose a new experimental technique for Cyclic Voltammetry, based on the first-order reversal curve (FORC) method for analysis of systems undergoing hysteresis. The advantages of this electrochemical FORC (EC-FORC) technique are demonstrated by applying it to dynamical models of electrochemical adsorption. The method can not only differentiate between discontinuous and continuous phase transitions, but can also quite accurately recover equilibrium behavior from dynamic analysis of systems with a continuous phase transition. Experimental data for EC-FORC analysis could easily be obtained by simple reprogramming of a potentiostat designed for conventional Cyclic-Voltammetry experiments.
I. Abou Hamad - One of the best experts on this subject based on the ideXlab platform.
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New Cyclic Voltammetry method for examining phase transitions: Simulated results
Journal of Electroanalytical Chemistry, 2007Co-Authors: I. Abou Hamad, Daniel T. Robb, Per Arne RikvoldAbstract:We propose a new experimental technique for Cyclic Voltammetry, based on the first-order reversal curve (FORC) method for analysis of systems undergoing hysteresis. The advantages of this electrochemical FORC (EC-FORC) technique are demonstrated by applying it to dynamical models of electrochemical adsorption. The method can not only differentiate between discontinuous and continuous phase transitions, but can also quite accurately recover equilibrium behavior from dynamic analysis of systems with a continuous phase transition. Experimental data for EC-FORC analysis could easily be obtained by simple reprogramming of a potentiostat designed for conventional Cyclic-Voltammetry experiments.Comment: 18 pages, 7 figures, accepted for publication in Journal of Electroanalytical Chemistry, changes in title, abstract and figure
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New Cyclic Voltammetry method for examining phase transitions: Simulated results
Journal of Electroanalytical Chemistry, 2006Co-Authors: I. Abou Hamad, Daniel T. Robb, Per Arne RikvoldAbstract:We propose a new experimental technique for Cyclic Voltammetry, based on the first-order reversal curve (FORC) method for analysis of systems undergoing hysteresis. The advantages of this electrochemical FORC (EC-FORC) technique are demonstrated by applying it to dynamical models of electrochemical adsorption. The method can not only differentiate between discontinuous and continuous phase transitions, but can also quite accurately recover equilibrium behavior from dynamic analysis of systems with a continuous phase transition. Experimental data for EC-FORC analysis could easily be obtained by simple reprogramming of a potentiostat designed for conventional Cyclic-Voltammetry experiments.
Daniel T. Robb - One of the best experts on this subject based on the ideXlab platform.
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New Cyclic Voltammetry method for examining phase transitions: Simulated results
Journal of Electroanalytical Chemistry, 2007Co-Authors: I. Abou Hamad, Daniel T. Robb, Per Arne RikvoldAbstract:We propose a new experimental technique for Cyclic Voltammetry, based on the first-order reversal curve (FORC) method for analysis of systems undergoing hysteresis. The advantages of this electrochemical FORC (EC-FORC) technique are demonstrated by applying it to dynamical models of electrochemical adsorption. The method can not only differentiate between discontinuous and continuous phase transitions, but can also quite accurately recover equilibrium behavior from dynamic analysis of systems with a continuous phase transition. Experimental data for EC-FORC analysis could easily be obtained by simple reprogramming of a potentiostat designed for conventional Cyclic-Voltammetry experiments.Comment: 18 pages, 7 figures, accepted for publication in Journal of Electroanalytical Chemistry, changes in title, abstract and figure
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New Cyclic Voltammetry method for examining phase transitions: Simulated results
Journal of Electroanalytical Chemistry, 2006Co-Authors: I. Abou Hamad, Daniel T. Robb, Per Arne RikvoldAbstract:We propose a new experimental technique for Cyclic Voltammetry, based on the first-order reversal curve (FORC) method for analysis of systems undergoing hysteresis. The advantages of this electrochemical FORC (EC-FORC) technique are demonstrated by applying it to dynamical models of electrochemical adsorption. The method can not only differentiate between discontinuous and continuous phase transitions, but can also quite accurately recover equilibrium behavior from dynamic analysis of systems with a continuous phase transition. Experimental data for EC-FORC analysis could easily be obtained by simple reprogramming of a potentiostat designed for conventional Cyclic-Voltammetry experiments.
R. Mark Wightman - One of the best experts on this subject based on the ideXlab platform.
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Detecting subsecond dopamine release with fast-scan Cyclic Voltammetry in vivo.
Clinical chemistry, 2003Co-Authors: Donita L. Robinson, B. Jill Venton, Michael L. Heien, R. Mark WightmanAbstract:Background: Dopamine is a potent neuromodulator in the brain, influencing a variety of motivated behaviors and involved in several neurologic diseases. Measurements of extracellular dopamine in the brains of experimental animals have traditionally focused on a tonic timescale (minutes to hours). However, dopamine concentrations are now known to fluctuate on a phasic timescale (subseconds to seconds). Approach: Fast-scan Cyclic Voltammetry provides analytical chemical measurements of phasic dopamine signals in the rat brain. Content: Procedural aspects of the technique are discussed, with regard to appropriate use and in comparison with other methods. Finally, examples of data collected using fast-scan Cyclic Voltammetry are summarized, including naturally occurring dopamine transients and signals arising from electrical stimulation of dopamine neurons. Summary: Fast-scan Cyclic Voltammetry offers real-time measurements of changes in extracellular dopamine concentrations in vivo. With its subsecond time resolution, micrometer-dimension spatial resolution, and chemical selectivity, it is the most suitable technique currently available to measure transient concentration changes of dopamine. © 2003 American Association for Clinical Chemistry
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The Use of Microelectrodes for Very Rapid Cyclic Voltammetry
Microelectrodes: Theory and Applications, 1991Co-Authors: R. Mark WightmanAbstract:The small time constants and ohmic drop associated with microelectrodes allows their use in very high speed Cyclic Voltammetry. Furthermore, since the sources of distortion at these electrodes are well understood, these can be removed by appropriate methods.
Jan C. Myland - One of the best experts on this subject based on the ideXlab platform.
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Modelling Cyclic Voltammetry without digital simulation
Electrochimica Acta, 2011Co-Authors: Keith B. Oldham, Jan C. MylandAbstract:Abstract A semi-analytical method of modelling Cyclic Voltammetry is described, derived, exemplified, verified, and advocated. A listing of the mechanistic schemes that can be addressed by the procedure includes E, EE, CE, EC and ECE, all with various degrees of reversibility. The approach has advantages and disadvantages when compared with digital simulation.
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Reversible Cyclic Voltammetry in the presence of product
Journal of Electroanalytical Chemistry, 1992Co-Authors: Angela M. Keightley, Keith B. Oldham, Jan C. Myland, Peter G. SymonsAbstract:Abstract Theory has been developed that describes, by means of a new analytic function, the shape of both branches of a reversible Cyclic voltammogram when both members of the redox couple are present in solution. Experiments with the ferrocyanide/ferricyanide couple confirm this theory. It is demonstrated that limiting cases of the new theory correspond to pre-existing expressions for simpler instances of Cyclic Voltammetry: (a) when only one member of the redox pair is initially present, and (b) when the second member is at constant activity.
