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Multichannel bipotentiostat system for cellular monitoring platforms

A versatile 4-channel bipotentiostat system for biochemical sensing is presented. A 1pA current resolution and 8kHz bandwidth are suited for amperometric detection of neurotransmitters released by cells, monitored in a smart microfluidic culture chamber. Multiple electrochemical measurements can be carried out on arrays of microelectrodes. Key design issues are here discussed along with the results of extensive electrochemical experiments (cyclic voltammetry, chronoamperometry, redox recycling and potentiometry).