An equivalent diagram for the interface impedance of metal needle electrodes

Pollak, V.

doi:10.1007/bf02478601

Cited by 35 publications

(9 citation statements)

References 2 publications

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“…[Fe(CN) 6 ] 4À to the left direction with the rise in temperature. It is well known that the value of the capacitance depends on many factors, which include the electrode potential, the temperature, the ionic concentration, the types of ions, and the properties of the electrode surface [48]. The capacitance at the double layer formed, can be expressed as follows:…”

Section: Electrochemical Impedance Spectroscopymentioning

confidence: 99%

Electrochemical and thermodynamic properties of hexacyanoferrate(II)/(III) redox system on multi-walled carbon nanotubes

Tsierkezos¹,

Ritter²

2012

The Journal of Chemical Thermodynamics

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Section: Electrochemical Impedance Spectroscopymentioning

confidence: 99%

Electrochemical and thermodynamic properties of hexacyanoferrate(II)/(III) redox system on multi-walled carbon nanotubes

Tsierkezos¹,

Ritter²

2012

The Journal of Chemical Thermodynamics

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“…There has been extensive modeling of the electrode-tissue interface that well characterizes the equivalent components of this interface [19], [23]–[25]. We include the following elements (Fig.…”

Section: Methodsmentioning

confidence: 99%

Analysis of the Peak Resistance Frequency Method

Wang

Weiland

2016

IEEE Trans. Biomed. Eng.

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Objective This study analyzes the peak resistance frequency (PRF) method described by Mercanzini et al., a method that can easily extract the tissue resistance from impedance spectroscopy for many neural engineering applications but has no analytical description thus far. Methods Mathematical analyses and computer simulations were used to explore underlying principles, accuracy, and limitations of the PRF method. Results The mathematical analyses demonstrated that the PRF method has an inherent but correctable deviation dependent on the idealness of the electrode-tissue interface, which is validated by simulations. Further simulations show that both frequency sampling and noise affect the accuracy of the PRF method, and in general, it performs less accurately than least squares methods. However, the PRF method trades off in simplicity and measurement and computation time. Conclusion From the qualitative results, the PRF method can work with reasonable precision and simplicity, although its limitation and the idealness of the electrode-tissue interface involved should be taken into consideration. Significance This work provides a mathematical foundation for the PRF method and its practical implementation.

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“…d H in water is around 2.8 E Â 10 À8 cm) (Bockris & Drazic, 1972). In reality, however, the double-layer capacitance is not constant with potential, and, for most electrode systems of practical importance, the capacitance in the absence of larger externally applied potential differences can be estimated as about 10 mF/cm 2 (Pollak, 1974a) or 15.9 mF/cm 2 (Bockris & Drazic, 1972) irrespective of the ratio of the ions (Bockris & Reddy, 1970). The GouyeChapman diffuse model (Bockris & Drazic, 1972) may present a better description of the double-layer structure, in which it was assumed that there would be no 'sticking' of ions to the electrode and no contact adsorption, and suggested a diffuse charge model as an addition to the Helmholtz theory.…”

Section: Electrode Modellingmentioning

confidence: 99%

“…In the majority of applications, the effect of the diffusion layer can be ignored in order to simplify the solution (Cobbold, 1974;Pollak, 1974a). The simplified equivalent circuit is given as in Figure 2.5.…”

Section: Electrode Modellingmentioning

confidence: 99%