What is a SEM Microscope?
A SEM microscope is a type of microscope that uses a beam of electrons combined with detectors to view very small areas. The device is usually referred to as a SEM, as the letters are an acronym for the microscope’s correct name – Scanning Electron Microscope. This type of microscope is extremely powerful, and has an average useful resolution between 7 nm and 3 nm, though lower resolutions have been achieved.