原子分辨率在线全息技术在单投影原子结构三维测定中的应用前景

F. -R. Chen, C. Kisielowski, D. Van Dyck
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引用次数: 14

摘要

现在已经确定了可以从单投影的直线全息图中恢复均匀纳米晶体的三维结构。该方法建立在电子出口波函数的定量对比解释上。由于单层和双层石墨烯的模拟出口波函数以足够的分辨率揭示了碳基材料的原子结构,我们从理论上探索了如何将该方法扩展到周期性碳基材料之外,以包括非周期性分子结构。我们从理论上证明了随机取向油酸分子的三维原子结构可以从单个投影中恢复。
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Prospects for atomic resolution in-line holography for a 3D determination of atomic structures from single projections

It is now established that the 3D structure of homogeneous nanocrystals can be recovered from in-line hologram of single projections. The method builds on a quantitative contrast interpretation of electron exit wave functions. Since simulated exit wave functions of single and bilayers of graphene reveal the atomic structure of carbon-based materials with sufficient resolution, we explore theoretically how the approach can be expanded beyond periodic carbon-based materials to include non-periodic molecular structures. We show here theoretically that the 3D atomic structure of randomly oriented oleic acid molecules can be recovered from a single projection.

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Advanced Structural and Chemical Imaging
Advanced Structural and Chemical Imaging Medicine-Radiology, Nuclear Medicine and Imaging
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