▎ 摘　　要

NOVELTY - Manufacturing a sensor device, comprises: overlaying a dielectric layer onto a substrate; depositing graphene or carbon nanotubes onto the dielectric layer; forming a source electrode and a drain electrode on the substrate such that the graphene layer defines a channel between them and is electrically connected to the source and drain electrodes; and functionalizing a surface of the graphene with an imidazolidone compound. USE - The method is useful for manufacturing a sensor device (claimed) that is FET, used to detect target molecule and immobilizing biomolecules. ADVANTAGE - The method: provides sensors with improved sensitivity, reliability/repeatability and specificity; and utilizes imidazolidone that is stable to radiation and/or heat encountered during fabrication of biosensor.