A Brief History How Scanning Electron Microscope Works SE and ... The SEM is a microscope that works by scanning a focused beam of electrons on a sample of interest. The electron ... All these require specialized detectors for their detection that are not usually present on a single machine (Arikan, 2009). read more
The scanning electron microscope (SEM) uses a focused beam of high-energy electrons to generate a variety of signals at the surface of solid specimens. The signals that derive from electron-sample interactions reveal information about the sample including external morphology (texture), chemical composition, and crystalline structure and orientation of materials making up the sample. read more
Overview of how scanning electron microscopes work and how they compare to optical microscopes. read more
The three most familiar types are called transmission electron microscopes (TEMs), scanning electron microscopes (SEMs), and scanning tunneling microscopes (STMs). Photo: Left: Studying a specimen with a transmission electron microscope. read more