What is SEM technique?
A scanning electron microscope (SEM) projects and scans a focused stream of electrons over a surface to create an image. The electrons in the beam interact with the sample, thereby producing various signals that can be used to obtain information about the surface's topography and composition.
What is SEM analysis used for?
Scanning Electron Microscopy, or SEM analysis, provides high-resolution imaging useful for evaluating various materials for surface fractures, flaws, contaminants or corrosion.
How SEM works step by step?
Scanning electron microscopy works by scanning a sample with electron beams. An electron gun fires these beams, which then accelerate down the column of the scanning electron microscope. During this action, the electron beams pass through a series of lenses and apertures, which act to focus it.
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