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SEM Analysis: A Closer Look at the Microscopic World Introduction Scanning Electron Microscopy (SEM) analysis is a powerful technique widely used in material science, biology, and various industrial applications to obtain high-resolution images of sample surfaces. By using a focused beam of electrons instead of light to create an image, SEM analysis can reveal the topography, composition, and other crucial properties of materials at the micro and nano scales. Let’s delve into the fundamentals of SEM analysis and its broad range of applications. How SEM Works SEM operates by scanning a focused beam of electrons across the sample's surface. As electrons interact with the sample atoms, they generate secondary electrons, backscattered electrons, and characteristic X-rays. These signals are collected to create detailed images or to conduct elemental analysis of the sample surface. The depth of field in SEM images allows for the visualization of sample surfaces with amazing clarity and d...