Abstract: The gold film electrodes were prepared by using two different methods. The surface modality of electrodes，and the self-assembling performance of single-strand DNA on the surface of electrodes were characterized with scanning electron microscope and Raman spectroscopy. The electrochemical characterization was made with cyclic voltammetry. The result showed that the performance of the electrodes prepared by using different methods was greatly different. When the elements diffused into each other on the surface of gold film electrodes，such phenomenon would adversely influence the electrochemical characterization of electrodes and the self-assembling performance of single-strand DNA on the surface of electrodes.

摘要： 用两种不同溅射工艺制备金薄膜电极。利用扫描电子显微镜、拉曼光谱法和循环伏安法对这两种电极的表面形貌、单链DNA在电极表面的自组装性能和其电化学行为进行了研究。发现不同工艺条件制作的电极性能差异较大；特别是金电极表面有其它金属存在互扩散时，对电极的电化学行为和单链DNA自组装性能具有直接影响。