MATTER LogoIntroduction to Electron Microscopes

Scanning Electron Microscope (SEM)

Topic Description
Overview A brief overview of the SEM, including an interactive diagram of the main components
The Electron Gun This section describes the thermionic and field emission electron guns, and includes a simulation on the thermionic gun
The Lens System This section describes the working of an electromagnetic lens and covers the effect of the condenser lens in the SEM
Everhart Thornley Detector A short section showing how the detector works, including a simulation
Scanning System A short section describing the scanning system of an SEM and the three different imaging modes that can be used
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