扫描隧道显微镜应用于生物超微结构探测的机制  

THE MECHANISM OF SCANNING TUNNELING MICROSCOPY APPLYING TO DETECTION OF BIOULTRASTRUCTURE

作　　者：张彦军[1] 李增发[1] 邓江东[1] 颜彩繁[1] 

机构地区：[1]南开大学物理系,天津300071

出　　处：《南开大学学报（自然科学版）》1998年第2期10-13,共4页Acta Scientiarum Naturalium Universitatis Nankaiensis

摘　　要：在利用扫描隧道显微镜研究质位pUC18DNA分子线圈型超螺旋拓扑结构的基础上，进一步探讨了扫描隧道显微镜应用于生物超微结构探测的可能机制，并指出扫描隧道显微镜技术是探测生物超微结构，尤其是DNA拓扑结构的较好手段。The solenoidally supercoiled DNA conformation of multiple-copy plasmid pUC18 DNA studied with STM is reported. Based on this research, the possible mechanism of bioultrastructure STM detection is analysed. It is indicated that STM is a very useful technique in detection of bioultrastructure, especially of DNA topological structure.

关 键 词：扫描隧道显微镜 生物 超微结构 DNA 

分 类 号：Q－336[生物学] Q74