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首页> 外文期刊>Physical chemistry chemical physics: PCCP >Coherent diffractive imaging of graphite nanoparticles using a tabletop EUV source
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Coherent diffractive imaging of graphite nanoparticles using a tabletop EUV source

机译：使用桌面EUV源的石墨纳米粒子相干衍射成像

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摘要

Structural information of nanostructures plays a key role in synthesis of novel nano-sized materials for promising applications such as high-performance nanoelectronics and nanophotonics. In this study, we apply for the first time the state-of-the-art coherent diffractive imaging method to characterize the structure of graphite nanoparticles. A sample with nanographites on a Si3N4 support was exposed to 30 nm radiation from a tabletop laser-driven high-order harmonic generation extreme ultraviolet (EUV) source. From the measured far-field diffraction pattern, we were able to reconstruct the distribution of the graphite nanoparticles with a spatial resolution of similar to 330 nm using the standard iterative phase retrieval algorithms. A closer look at the reconstructed images reveals possible absorption effects of graphite nanoparticles. This experiment demonstrates the first step towards wide-field and high-resolution imaging of nuclear materials using the newly established lab-scale EUV source. Having such a source opens the door to performing investigations of nuclear graphite and other radioactive material in the lab, thus avoiding the need to transport samples to external facilities.
机译：纳米结构的结构信息在新型纳米尺寸材料的合成中起关键作用，用于高性能纳米电极和纳米泳菌属的有前途的应用。在这项研究中，我们首次申请最先进的相干衍射成像方法来表征石墨纳米粒子的结构。 Si3N4载体上具有纳米纳米的样品从桌面激光驱动的高阶谐波产生极紫外（EUV）源暴露于30nm辐射。从测量的远场衍射图案中，我们能够使用标准迭代相位检索算法重建具有类似于330nm的空间分辨率的石墨纳米颗粒的分布。仔细研究重建的图像揭示了石墨纳米粒子的可能吸收效果。该实验演示了使用新建立的实验室级EUV源朝向核材料的宽面和高分辨率成像的第一步。具有这样的源来打开门来执行实验室中的核石墨和其他放射性物质的研究，从而避免将样品运送到外部设施。

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