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영어

Recently, boron-doped diamond (BDD) thin films have been used as active electrodes for various electrochemical sensors, because of their unique chemical, physical, optical and mechanical properties [1]. Electrochemical sensors based on the BDD electrodes show an enhanced signal-to-noise ratio (S/N), a low detection limit and a wide linear range due to their unique advantages such as a low background current and a wide potential window [2-3]. In addition, the low adsorption of organic contaminants on the BDD surface results in low fouling of the functional proteins on the electrode surface [4]. However, it is difficult to synthesize the BDD materials with 3-D nanostructures and to modify their surface for immobilization of biomaterials. So, various nanomaterials on the BDD electrode are introduced for the enhanced electrical performance and effective functionalization. Electrochemical sensor based on the BDD electrodes with various nanomaterials exhibited the improved performances, i.e. higher sensitivity, a lower detection limit, and a wide linear range.