中国物理B ›› 2021, Vol. 30 ›› Issue (12): 120702-120702.doi: 10.1088/1674-1056/ac0522

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Design of a novel correlative reflection electron microscope for in-situ real-time chemical analysis

Tian-Long Li(李天龙)1, Zheng Wei(魏征)2, and Wei-Shi Wan(万唯实)1,†   

  1. 1 School of Physical Science and Technology, Shanghai Tech University, Shanghai 201210, China;
    2 College of Materials Science and Engineering, Chongqing University, Chongqing 401331, China
  • 收稿日期:2021-03-25 修回日期:2021-05-01 接受日期:2021-05-26 出版日期:2021-11-15 发布日期:2021-12-01
  • 通讯作者: Wei-Shi Wan E-mail:wanwsh@shanghaitech.edu.cn
  • 基金资助:
    Project supported by the Shanghai Tech University and the National Natural Science Foundation of China (Grant No. 11774039).

Design of a novel correlative reflection electron microscope for in-situ real-time chemical analysis

Tian-Long Li(李天龙)1, Zheng Wei(魏征)2, and Wei-Shi Wan(万唯实)1,†   

  1. 1 School of Physical Science and Technology, Shanghai Tech University, Shanghai 201210, China;
    2 College of Materials Science and Engineering, Chongqing University, Chongqing 401331, China
  • Received:2021-03-25 Revised:2021-05-01 Accepted:2021-05-26 Online:2021-11-15 Published:2021-12-01
  • Contact: Wei-Shi Wan E-mail:wanwsh@shanghaitech.edu.cn
  • Supported by:
    Project supported by the Shanghai Tech University and the National Natural Science Foundation of China (Grant No. 11774039).

摘要: A novel instrument that integrates reflection high energy electron diffraction (RHEED), electron energy loss spectroscopy (EELS), and imaging is designed and simulated. Since it can correlate the structural, elemental, and spatial information of the same surface region via the simultaneously acquired patterns of RHEED, EELS, and energy-filtered electron microscopy, it is named correlative reflection electron microscopy (c-REM). Our simulation demonstrates that the spatial resolution of this c-REM is lower than 50 nm, which meets the requirements for in-situ monitoring the structural and chemical evolution of surface in advanced material.

关键词: reflection high energy electron diffraction (RHEED), electron energy loss spectroscopy (EELS), parallel detection, energy-filtered electron microscopy

Abstract: A novel instrument that integrates reflection high energy electron diffraction (RHEED), electron energy loss spectroscopy (EELS), and imaging is designed and simulated. Since it can correlate the structural, elemental, and spatial information of the same surface region via the simultaneously acquired patterns of RHEED, EELS, and energy-filtered electron microscopy, it is named correlative reflection electron microscopy (c-REM). Our simulation demonstrates that the spatial resolution of this c-REM is lower than 50 nm, which meets the requirements for in-situ monitoring the structural and chemical evolution of surface in advanced material.

Key words: reflection high energy electron diffraction (RHEED), electron energy loss spectroscopy (EELS), parallel detection, energy-filtered electron microscopy

中图分类号:  (Charged-particle beam sources and detectors)

  • 07.77.Ka
07.78.+s (Electron, positron, and ion microscopes; electron diffractometers) 79.20.Uv (Electron energy loss spectroscopy)