作　　者： ; (金传洪）;

机构地区： 华南农业大学理学院

出　　处： 《电子显微学报》 2010年第2期119-122,共4页

摘　　要： 利用可控的电子束辐照减薄,成功地在电子显微镜内原位制备出石墨烯。由于从单张高分辨像上难以分辨单个碳原子,本文采集了系列离焦的高分辨像并进行波函数重构,最终获得了清晰的单个碳原子像。系列像的重构是利用自主开发的REW软件实现的,本文介绍如何利用REW的像模拟功能确定系列像的成像条件。 By means of the electron beam irradiation-induced layer-by-layer sputtering,graphene monolayers were successfully prepared inside the transmission electron microscope （TEM）.It is difficult to directly and clearly resolve single carbon atoms from the pristine aberration-corrected high resolution TEM （HRTEM） images,due to the relative lower signal-to-noise ratio.Therefore,the exit-wave reconstruction method was employed for the through-focal image series.A hexagonal lattice of carbon atoms could be unambiguously resolved from the reconstructed phase image.The image processing,including the HRTEM simulation and HRTEM image reconstruction,are performed using a self-developed software of REW.

关 键 词： 石墨烯 高分辨电子显微像 软件 波函数重构 单原子

领　　域： [电子电信] [理学]