Vibrating electrode arrays

Characterization of mono- and double-segment vibrating electrodes

“…To solve this problem, a cylindrical double-segment vibrating electrode (DSVE) was developed and the analytical feature similar to that of the RRDE was achieved using the DSVE. As example, Jeroschewski et al [1] obtained a high value of collection efficiency using a vibrating triple electrode. In DSVE, two electrodes segments mounted vertically along the z-axis of a cylinder are separated by a thin Teflon insulator foil and the system is pressed together to enhance its mechanical stability.…”

New electrochemical sensor for the detection of hydrogen sulfide and other redox active species

“…in microsensors and amperometric thin-layer setups [20][21][22], are mainly due to the prevention of electrode passivation effects caused by irreversible electrode reactions coupled with adsorption or electrode destruction phenomena. The reversible redox pair acting as a mediator between analyte and electrodes in the sensor allows for a broader range of analytes because the analytes themselves do not have to be reversible.…”

“…The sensor is enclosed by a membrane ideally permeable only to the analyte and can be used to measure continuously. The ''redox cycling sensor'' [21] is an alternative to amperometric sensors for measuring concentrations of redox active species and features a lower detection limit. Studies involving the performance of thin-layer cells and their capability for use in a setup as a sensor at different cell geometries by varying the gap width between both electrodes as well as the sensor electrolyte were performed and presented elsewhere [36,37].…”

Mathematical model of electrochemical behavior of redox cycling sensors

“…As the resulting current i is proportional to the mediator concentration, it is possible to determine the change in mediator concentration [6,7], and through calibration the analyte concentration beyond the membrane. The sensor is well described in detail in [3][4][5], including the function of guard and counter electrodes, which is not the focus of this paper.…”

“…1. The complete method and necessary electrode geometry was described in detail by Jeroschewski et al [3,5] and Spilker [4].…”