Electron microscopy is a powerful imaging technique that uses a beam of accelerated electrons to observe extremely small objects at high magnification and resolution. This technique allows scientists to study the detailed structure and morphology of materials at the atomic and molecular level. Electron microscopy is widely used in various scientific fields, including biology, materials science, and nanotechnology, to visualize and analyze a wide range of samples, such as cells, tissues, nanoparticles, and thin films. The two main types of electron microscopy are transmission electron microscopy (TEM) and scanning electron microscopy (SEM), each offering unique advantages for different types of samples and applications.