Amorphous carbon nitride microband integrated in a microfluidic device for DNA biosensors applications

•Integration of amorphous carbon nitride (a-CNx) was reported in microfluidic.•Hydrodynamic voltammetry and EIS were used for characterization under flow.•The developed electrochemical biosensor is robust, label free, and stable.•We evidenced how an activation procedure leads more DNA probes collection.•The use of a-CNx microelectrodes for DNA detection is evidenced.