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== STEM (Scanning Transmission Electron Microscopy) ==
== STEM (Scanning Transmission Electron Microscopy) ==
STEM combines the principles of transmission electron microscopy and scanning electron microscopy and can be performed on either type of instrument. In the STEM setting, the sample requires to have a thickness of less than 150 nm for visualization.
STEM combines the principles of transmission electron microscopy and scanning electron microscopy and can be performed on either type of instrument. In the STEM setting, the sample requires to have a thickness of less than 200 nm for visualization.


[[File:20210519_Microalgae_K2_007-1.jpg|500px|left|thumb|STEM imaging of a 100 nm thick section of Microalgae]]<br clear="all" />
[[File:20210519_Microalgae_K2_007-1.jpg|500px|left|thumb|STEM imaging of a 100 nm thick section of Microalgae]]<br clear="all" />