Cell constant analytical study of electrochemical flow cell with interdigitated microelectrodes

Electrochemical Measurements with Interdigitated Array Microelectrodes

ing into widespread use for the trace determination of easily oxidizable and reducible organic and inorganic compounds, because it provides a rather easy procedure for direct and selective detection. Recently, microelectrodes have been receiving attention in this field (1,2). They offer higher sensitivity than macroelectrodes of conventional size, because an electroactive molecule can approach ...

Large-area interdigitated array microelectrodes for electrochemical sensing

Advanced photolithography developed for the semiconductor industry has been used to fabricate interdigitated microelectrode arrays that pass steady-state limiting currents of up to 230 nArmM analyte — 2.5 times more than the most sensitive interdigitated array built to date, and exhibit response times of ;5 ms. This performance results from the small interelectrode gap and the large active area...

Amyloid Beta Detection by Faradaic Electrochemical Impedance Spectroscopy Using Interdigitated Microelectrodes

Faradaic electrochemical impedance spectroscopy (f-EIS) in the presence of redox reagent, e.g., [Fe(CN)₆]3-/4-, is widely used in biosensors owing to its high sensitivity. However, in sensors detecting amyloid beta (Aβ), the redox reagent can cause the aggregation of Aβ, which is a disturbance factor in accurate detection. Here, we propose an interdigitated microelectrode (IME) based f-EIS tech...

A Model of an Electrochemical Flow Cell with Porous Layer

In this paper we discuss three different mathematical models for fluid–porous interfaces in a simple channel geometry that appears e.g. in thinlayer channel flow cells. Here the difficulties arise from the possibly different orders of the corresponding differential operators in the different domains. A finite volume discretization of this model allows to calculate the limiting current of the H2...

Switching on cell adhesion with microelectrodes.