The chips have a HDMI-C edge connector format for easy connectivity to a potentiostat and bear eight individually addressable electrodes. Interdigitated Pt microbands arrays (1 m wide, 40 m long, 50 nm height and 2 m gap) were used for SERS substrate fabrication. Figure (b) shows the experimental setup used to record videos of nanodendrites formation. The sensors chips were placed in a dedicated holder and a small aliquot of a AgNO3 solution dropped on top of the electrodes. Chips were then covered with a coverslip and imaged under the microscope, allowing real time monitoring of the SERS sensors fabrication.