U2) Electron Microscopes

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  • Created by: lieselb12
  • Created on: 05-05-20 12:05
What are properties?
Electrons used to form images, with very high mag + res to look at detailed structures, electrons have short wavelength
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What is the max resolution?
0.0002 um
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What is the max magnification?
1,500,000 x
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What does the Transmission electron microscope do?
Electrons pass through specimen, denser cell areas absorbs more e so appear darker, it visulises internal structures
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Transmission electron microscope specimen must be?
thin + dead
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TEM images are..?
images= 2D and black+white,
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What's its magnification + resolution compared to Scanning Ems?
TEM= higher mag + res
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Electron Microscopes properties?
Expensive + complicated to use so requires specalist lab training
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What does the Scanning electron microscope do?
Electrons pass across surface of specimen + only visualise specimen surface
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Scanning electron microscope specimen must be?
Thick + dead
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SEM images are..?
3D + black + white
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Other cards in this set

Card 2

Front

What is the max resolution?

Back

0.0002 um

Card 3

Front

What is the max magnification?

Back

Preview of the front of card 3

Card 4

Front

What does the Transmission electron microscope do?

Back

Preview of the front of card 4

Card 5

Front

Transmission electron microscope specimen must be?

Back

Preview of the front of card 5
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