transmission electron microscopy field-emission transmission electron microscopy FTEM 2009-11-21T01:12:18Z Microscopy where an electron-transparent specimen is bombarded with a finely focused (<10 nm diameter) electron beam produced by thermionic emission heating (field emission) and with an acceleration voltage 50–150 kV under vacuum and the intensities of the transmitted electrons are measured. https://orcid.org/0000-0001-5985-7429 FETEM FEG-TEM FE TEM FE-TEM field emission gun transmission electron microscopy field emission transmission electron microscopy CHMO:0002611 FE/TEM field-emission-gun transmission electron microscopy FEGTEM