裂解石墨单色器的扫描隧道显微镜研究  

SCANNING TUNNELING MICROSCOPY STUDIES OF PYROLYTIC GRAPHITE

作　　者：阮理科[1] 黄桂珍[1] 白春礼[1] 

机构地区：[1]中国科学院化学研究所

出　　处：《真空科学与技术学报》1990年第5期316-319,共4页Chinese Journal of Vacuum Science and Technology

摘　　要：本文介绍用扫描隧道显微镜对裂解石墨单色器表面的研究结果。STM图像显示出石墨单色器表面存存着台阶和大的波纹起伏,而用扫描电子显微镜却不能观察到这样的结果。文中讨论了用不同偏置电压和电流对得到的STM图像的影响。实验结果表明:由于针尖一样品之间的相互作用而造成的样品表面弹性形变是使观察到的石墨单色器表面图像呈现较大起伏的主要原因。另外,我们也得到了样品表面原子级分辨率的STM图像。Thin work mainly studies the surface of pyrolytic graphite with scanning tunneling microscopy (STM). The STM images show both the larger corrugations and terraces existing on the surface, which would not be observed by SEM. Effects by setting different bias voltages and tunneling currents on STM images are discussed. The results demonstrate that the large corrugations may be caused by the surface deformation resulting from the interaction between the tip and the sample. The STM images with atomic resolution were also observed.

关 键 词：扫描隧道显微镜 单色器 扫描电子显微镜 图像显示 表面图像 原子级 弹性形变 电流对 偏置电压 文中 

分 类 号：TB7-55[一般工业技术—真空技术]