Chemical-sensitive Electron Tomography for Nanomaterials
Liangwei Liu , Shiqiang Feng , Lili Han
Chemical Research in Chinese Universities ›› 2025, Vol. 41 ›› Issue (2) : 222 -236.
Chemical-sensitive Electron Tomography for Nanomaterials
Nanomaterials have greatly received interest in various fields due to their excellent activity, typically attributed to their nanoscale physical and chemical properties. Transmission electron microscopy (TEM) as a powerful tool for characterizing nanomaterials can offer microscopic information with high spatial resolution. However, TEM faces challenges in obtaining information along the electron beam direction (Z direction), which limits its ability to explore the unique characteristics of nanomaterials on a three-dimensional (3D) scale. Electron tomography (ET) is an advanced imaging technique that allows for the visualization of 3D structures of nanomaterials. When combined with energy-dispersive X-ray spectroscopy (EDS) or electron energy loss spectroscopy (EELS), it enables researchers to reveal chemical changes in three dimensions, enhancing the understanding of the complex mechanisms underlying changes in chemical properties. This review summarizes and discusses the recent advancements in EDS/EELS (chemical-sensitive) ET imaging techniques, including the traditional reconstruction method, deep learning-based method, and multi-modal method, which provide detailed processes of reconstruction to facilitate the understanding of how they work for related researchers. Moreover, several successful applications are presented to show the capabilities of chemical-sensitive ET in diverse fields. Finally, the existing challenges and solutions are discussed to propel the development of ET imaging techniques.
Nanomaterial / Electron tomography / Three dimension (3D) / Energy-dispersive X-ray spectroscopy (EDS) / Electron energy loss spectroscopy / Physical Sciences / Other Physical Sciences / Chemical Sciences / Physical Chemistry (incl. Structural)
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Sun C., Liu K., Zhang J., Liu Q., Liu X. J., Han L. L., Chin. J. Struct. Chem., 2022. |
Jilin University, The Editorial Department of Chemical Research in Chinese Universities and Springer-Verlag GmbH
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