Revealing Atomic Structure and Potential Landscape and Electronic Properties of 2D Materials with Electron Holography and Electron Spectroscopies (B04)

该项目将把原子分辨率离轴电子全息术（EH）发展成为合成二维模型的表征工具。这将1）增强目前用常规HRTEM在2DM处可实现的空间和信号分辨率，2）提供对原子尺度的静电势和电荷分布特征的访问，以及3）揭示关于合成2DM中的缺陷和边缘状态的配置、化学组成和形态的高分辨率信息。电子衍射（艾德）和电子能量损失谱（EELS）以及温度和电子辐照的原位应用，将显着增加2DM的电子显微镜和光谱的范围。

The project will develop atomic resolution off-axis electron holography (EH) into a characterization tool for synthetic 2DMs. This will 1) enhance the spatial and signal resolution currently achievable with conventional HRTEM at 2DMs, 2) provide access to electrostatic potential and charge distribution features at the atomic scale, and 3) reveal high-resolution information about the configuration of defect and edge states, chemical composition and morphology in synthetic 2DMs. Electron diffraction (ED) and electron-energy-loss spectroscopy (EELS) as well as in-situ application of temperature and electron irradiation, will significantly increase the scope of electron microscopy and spectroscopy for 2DMs.