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2D的表征工具。这将1)提高目前用传统HRTEM在2DMS上实现的空间和信号分辨率，2)提供原子尺度上的静电势和电荷分布特征，以及3)揭示合成2DMS中关于缺陷和边缘状态的配置、化学成分和形态的高分辨率信息。电子衍射(ED)和电子能量损失谱(EELS)以及温度和电子辐照的原位应用将极大地扩大2DMS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.