Cards (4)

  • What does SEM stand for?

    Scanning electron microscope
  • How do they work?
    Projects electrons across a specimen. Electrons are captured by a cathode ray tube. The scanning process releases electrons from the specimen which are captured in a cathode ray tube.
  • What are the advantages?
    Can produce 3D images- as it scans the surface of a specimen and capture all the textures. Can be used on thick specimens.
  • What are the limitations?
    Compared to TEM, the SEM provides lower resolution images.