5 Questions
What does SEM stand for?
Scanning Electron Microscopy
What type of beam does the SEM use?
A focused beam of high-energy electrons
What information about the sample can be revealed by electron-sample interactions in SEM?
External morphology (texture), chemical composition, and crystalline structure and orientation of materials
What is the spatial resolution of conventional SEM techniques?
50 to 100 nm
What can the SEM analyze in selected point locations on the sample?
Chemical compositions, crystalline structure, and crystal orientations
Study Notes
Scanning Electron Microscopy (SEM)
- SEM stands for Scanning Electron Microscopy
SEM Beam Characteristics
- The SEM uses a focused beam of high-energy electrons
Electron-Sample Interactions
- Electron-sample interactions in SEM can reveal information about the sample's topography, morphology, and composition
Spatial Resolution
- The spatial resolution of conventional SEM techniques is around 1-10 nanometers
Analytical Capabilities
- The SEM can analyze the elemental composition and distribution at selected point locations on the sample using energy-dispersive spectroscopy (EDS)
Test your knowledge of Scanning Electron Microscopy (SEM) with this quiz. Learn about the electron column, sample chamber, EDS detector, and other components of a typical SEM instrument.
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