Redox cycling at interdigitated nanowire electrode arrays: enhanced electrochemical sensing

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Seymour, Ian P.
Lovera, Pierre
Wahl, Amélie J. C
Rohan, James F.
O'Riordan, Alan
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Institute of Electrical and Electronics Engineers (IEEE)
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Interdigitated nanowire arrays can be used to perform generator collector type electrochemical measurements. For this set up, one comb of nanowire arrays are used to perform a standard voltammetric technique while the other comb is biased at a constant potential. This technique gives rise to multiple benefits, most notably enhancement of electrochemical signals due to redox cycling, and reduced diffusional overlap in the electrode arrays. Simulations have been used to optimize the electrode designs and to help understand the processes that occur at the electrode surfaces under these conditions. The combination of experimental and simulation data has led to the optimization of a generator collector system with significant collection efficiencies at a variety of conditions.
Electrochemical electrodes , Electrochemical sensors , Electrochemistry , Nanowires , Oxidation , Reduction (chemical) , Voltammetry (chemical analysis) , Redox cycling , Electrode surfaces , Generator collector system , Interdigitated nanowire electrode arrays , Generator collector type electrochemical measurements , Standard voltammetric technique , Electrochemical signals , Electrochemical sensing , Electrodes , Generators , Electric potential , Array signal processing , Nanoscale devices , Current measurement , Switches
Seymour, I., Lovera, P., Wahl, A., Rohan, J. F. and O'Riordan, A. (2018) 'Redox Cycling at Interdigitated Nanowire Electrode Arrays: Enhanced Electrochemical Sensing', 2018 IEEE 18th International Conference on Nanotechnology (IEEE-NANO), Cork, Ireland, 23-26 July, pp. 1-4. doi: 10.1109/NANO.2018.8626262
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