Channel and tubular electrodes

Compton, Richard G.; Unwin, Patrick R.

doi:10.1016/0022-0728(86)90219-6

Cited by 104 publications

(76 citation statements)

References 72 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…However, over the years 15 rapid developments in electrochemical based sensing have inspired hydrodynamic voltammetric techniques where electrodes are placed in a fluidic cell [1,17,18,19,20,21,22,23,24,25,26,27], and electrolyte solution is pumped in and out of the system. There are several advantages one can derive from such a system.…”

Section: Introductionmentioning

confidence: 99%

“…The fundamental understanding of the physics involved in cyclic voltamme- 25 try necessitates the development of mathematical models that can relate system parameters such as flow rates and scan rates used in an electrochemical system [28,29]. However, electrode kinetics is usually non-linear and CV is a transient technique implying that analytical solutions are not always available except in some limiting cases.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Experimentation and numerical modeling of cyclic voltammetry for electrochemical micro-sized sensors under the influence of electrolyte flow

Adesokan

Quan

Evgrafov

et al. 2016

Journal of Electroanalytical Chemistry

View full text Add to dashboard Cite

(2016). Experimentation and numerical modeling of cyclic voltammetry for electrochemical micro-sized sensors under the influence of electrolyte flow. Journal of Electroanalytical Chemistry, 763(February), 141-148. DOI: 10.1016141-148. DOI: 10. /j.jelechem.2015 exchange current density leads to a shift in the peak current of the recorded CV.Finally, the results also demonstrate that the working electrode at the center of the fluidic cell records accurate measurement than placing the electrode at the bottom of the cell. The numerical results and the experimental data show both qualitative and quantitative good agreement.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Experimentation and numerical modeling of cyclic voltammetry for electrochemical micro-sized sensors under the influence of electrolyte flow

Adesokan

Quan

Evgrafov

et al. 2016

Journal of Electroanalytical Chemistry

View full text Add to dashboard Cite

show abstract

“…2aii, the channel dimensions are determined via the use of a gasket, e.g. Teflon, 28 thermoplastics, 29 or an O-ring, 5,30 which is held between the upper unit, containing the inlet and outlet, and the electrode-containing base plate. For Eq.…”

Section: Conventional Fabrication Of Electrochemical Flow Cellsmentioning

confidence: 99%

Additive Manufacturing for Electrochemical (Micro)Fluidic Platforms

2016

View full text Add to dashboard Cite

The ability to make electrochemical measurements under controlled fluid flow has many applications in electrochemical analysis, especially at trace levels. With a move to rapid, on-line, small volume measurements and a need to improve measurement performance, there is a requirement to manufacture more complex fluidic systems with controlled internal 3D geometries at low cost. Both precision machining and lithography typically fail to meet these needs. In this article we describe the role of additive manufacturing (AM) for the fabrication of (micro)fluidic electrochemical flow systems. We show how AM has advanced device manufacture in these areas compared to the more traditional approaches. Different AM methods are also discussed with respect to their capabilities and advantages. A selection of current AM electrochemical flow cell applications are highlighted and future perspectives discussed.

show abstract

“…However, the specificity of electrochemical sensing, where the reaction actually induces a gradient of analyte established at the electrode following Fick's laws, requires a careful characterization of the detection system, especially if it is embedded into a microfluidic circuit. Indeed, several reports have highlighted the specific behaviour of electrochemistry in microchannels [9][10][11][12][13], where the mass transport characteristics are radically different from the ones encountered in traditional conditions of electrochemistry [14][15][16]. The fast time response and sensitivity of electrochemical sensors is one of their most attractive features, allowing for example the detection of neuronal transmission [17][18][19][20][21][22] or single molecules [23,24].…”

Section: Introductionmentioning

confidence: 99%

Interplay between the potential waveform and diffusion layer dynamics determines the time-response of voltammetric detection in microchannels

Trouillon

Gijs

2015

Electrochimica Acta

View full text Add to dashboard Cite

Member of the ISEThe diffusion layer is a critical factor affecting the temporal response of electrochemical devices. In this article, we have investigated the effect of the relaxation of the diffusion layer during the potentiodynamic sensing of ferrocenemethanol (FcMeOH) in microchannels and compared these results to amperometry. First, the effect of the relaxation of the diffusion layer is described, both theoretically and experimentally. Then, chronoamperometric and voltammetric measurements were considered, and the rate of current increase as a plug of FcMeOH is injected into the device was studied for both cases. It was found that, for the oxidation of FcMeOH, the waveform maximising the duration of the anodic phase provided an improved response for potentiodynamic methods, even though amperometry was always found to show the best results. This was further established by extracting the impulse and modulation transfer functions, which characterize the time and frequency responses, respectively, of the fluidic/ electrochemical system. These findings can help designing potential waveforms improving the time response of the device, in systems where high temporal resolution is needed. This is particularly appropriate to bioelectrochemical analyses, where release and uptake phenomena can occur on the millisecond timescale.

show abstract

Channel and tubular electrodes

Cited by 104 publications

References 72 publications

Experimentation and numerical modeling of cyclic voltammetry for electrochemical micro-sized sensors under the influence of electrolyte flow

Experimentation and numerical modeling of cyclic voltammetry for electrochemical micro-sized sensors under the influence of electrolyte flow

Additive Manufacturing for Electrochemical (Micro)Fluidic Platforms

Interplay between the potential waveform and diffusion layer dynamics determines the time-response of voltammetric detection in microchannels

Contact Info

Product

Resources

About