The Cover schematically illustrates the effects of the catalytic gaseous environment on image formation during in situ environmental scanning transmission electron microscopy (ESTEM).In their Full Paper, Y. Zhu and N. D. Browning present the first evaluation of the sensitivity and resolution of STEM imaging mode with the presence of gases. It was found that ESTEM offers superior signal‐to‐noise ratio and predictable resolution in imaging solid catalysts under realistic reaction conditions. This work would serve as a basis for an advanced environmental imaging method that opens up new opportunities for in situ investigation of catalytic dynamics at the atomic scale. More information can be found in the Full Paper by Y. Zhu and N. D. Browning on page 3478 in Issue 18, 2017 (DOI: 10.1002/cctc.201700474).

中文翻译：

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封面：气体在原位扫描透射电子显微镜实验中确定图像质量和分辨率中的作用（ChemCatChem 18/2017）

封面示意性地说明了催化气体环境对原位环境扫描透射电子显微镜（ESTEM）期间图像形成的影响。Y。Zhu和ND Browning在其论文全文中首次对STEM成像模式的灵敏度和分辨率进行了评估。在有气体存在的情况下。结果发现，在现实的反应条件下，ESTEM在固体催化剂成像中具有出色的信噪比和可预测的分辨率。这项工作将作为先进的环境成像方法的基础，该方法为原子尺度的催化动力学的原位研究开辟了新的机会。可以在2017年第18期第3478页的Y.Zhu和N.D.Browning的全文中找到更多信息。 （DOI：10.1002 / cctc.201700474）。