Electron microscopy (EM) is a type of microscopy that uses a beam of electrons to create highly magnified images of very small objects, such as cells, viruses, and individual molecules. EM can provide much higher resolution images than traditional light microscopy, which is limited by the wavelength of visible light.
There are two main types of electron microscopy: transmission electron microscopy (TEM) and scanning electron microscopy (SEM). TEM involves passing electrons through a thin sample, which creates an image of the internal structure of the sample. SEM, on the other hand, involves scanning the surface of a sample with a beam of electrons to create a detailed 3D image of the sample’s surface.
EM is widely used in many fields of science, including biology, materials science, and physics. In biology, EM is used to study the structure and function of cells, viruses, and other biological structures. In materials science, EM is used to analyze the structure and properties of materials at the atomic scale. In physics, EM is used to study the behavior of electrons and other subatomic particles.