▎ 摘　　要

NOVELTY - Making electrode sensors using copper clad board towards the usage of biosensors by (a) fabricating graphene nano ink for using as a coating of electrodes, and (b) preparing the nano ink using green synthesis method. USE - The method is useful for: making electrode sensors using copper clad board, which is useful in biosensors (claimed); and making electrode system. ADVANTAGE - The method: shows the enhanced capability of electrode; develops a low cost electrode system, preferably low cost biosensors that can readily attached to the analytic devices; and utilizes the high conductivity of graphene nanoparticles.