This paper focused on the imaging of sensitive samples such as biological ones by high-resolution transmission electron microscopy,which included the developments in the imaging method of electron beam.First,the mechanism of quantum electron coherent imaging based on the interaction-free measurement(IFM)was introduced in detail.Second,demands of the coupled coherent electron source and transportation of coherent electrons were given for electron IFM in free-space electron optics.Quantum electron microscope,established by combining electron microscope with quantum mechanism,can solve the radiation damage of high-energy electrons on sensitive samples in nature,which becomes a milestone in the high-resolution non-destructive testing of sensitive samples.
关键词
透射电子显微镜/无相互作用测量/自由空间电子光学/量子电子显微镜
Key words
transmission electron microscope/interaction-free measurement/free-space electron optics/quantum electron microscope
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