Gold Screen-Printed Electrodes Fabricated from Compact Disc Recordables

This study presents a cost-effective method for fabricating gold screen-printed electrodes using gold compact disc recordables. A standard three-electrode configuration was produced by precision laser cutting and engraving, consisting of a central working electrode flanked by reference and counter electrodes. The electrochemical performance, evaluated using the ferricyanide redox probe, was comparable to that of commercial gold disk electrodes. Furthermore, successful detection of copper ions (2–14 ppm) and dopamine (5–100 μM) by square-wave voltammetry demonstrates the suitability of the fabricated electrodes for diverse sensing applications in environmental and clinical monitoring.