▎ 摘　　要

NOVELTY - Multi-grid graphene field-effect transistor sensor array comprises multiple sensors, where each sensor is composed of a drain electrode, a source electrode and multiple gate electrodes. Each sensor is provided with a sputtering and depositing patterned source electrode and drain electrode on the glass substrate, a vapor deposition single-layer graphene channel, and a gate electrode modified by different functional materials. USE - The method is useful for preparing multi-gate graphene field effect transistor sensor array, which is useful in a sensor array device for detecting food quality and safety. ADVANTAGE - The multi-gate graphene field-effect transistor sensor array has improved performance. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) preparation method of a multi-gate graphene field effect transistor sensor array; and (2) multiple detection method of the multi-gate graphene field effect transistor sensor array. DESCRIPTION OF DRAWING(S) - The drawing shows a solution-gated graphene transistors (SGGT)sensor with multiple gate electrodes. (Drawing includes non-English language text).