Practical Electron Microscopy and Database

Magnetic fields play a crucial role in the operation of electron microscopes, serving as the primary mechanism for focusing and controlling electron beams. In electron microscopes, magnetic lenses, which consist of coils of wire through which an electric current flows, generate strong magnetic fields that precisely manipulate the trajectory of electrons. These magnetic fields are essential for achieving the high-resolution images that electron microscopes are known for, as they allow for the fine adjustment of the electron beam, focusing it onto the sample with remarkable accuracy. The ability to control the electron beam with magnetic fields is what enables electron microscopes to reveal the intricate details of materials at the atomic scale, making them indispensable tools in scientific research and material characterization.