Electron Microscope:

• Electron Microscopes

The electron microscope that we saw was a transmission electron microscope (TEM). It works by sending a beam of electrons from a heated ‘V’-shaped tungsten filament (an electron gun) towards the stage using an anode and a potential of 100 KeV. The electrons partially pass through the specimen depending on where it is electron dense and where it is electron transparent. This beam now has information about the structure of the specimen that is magnified using electromagnetic lenses.