▎ 摘　　要

NOVELTY - An L-ascorbic acid sensor is provided. The L-ascorbic acid sensor includes a flexible substrate. A working electrode is disposed on the flexible substrate, and the working electrode includes: a first metal layer disposed on the flexible substrate, a sensing electrode layer disposed on the first metal layer of a first end portion of the working electrode, a graphene oxide layer disposed on the sensing electrode layer, and an L-ascorbic acid oxide film disposed on the graphene oxide layer, wherein a plurality of magnetic beads are embedded in the L-ascorbic acid oxide film. A reference electrode is disposed on the flexible substrate, and the reference electrode includes a second metal layer.