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CELL STRUCTURE
MICROSCOPY
Scanning Electron Microscope
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Created by
rosie powe
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Cards (4)
How does it work?
Electrons
shot from beam, electrons are
reflected
back and forth to produce a
3D
image
Focused
using electromagnets
Advantages
Much higher
resolution
(1nm)
Detailed 3D image
High
magnification (
200 000x
)
Disadvantages
Expensive
Requires
extensive training
to operate
Samples must be
dead
as it must be in a
vacuum
No
true colour
formed (
black
and
white
image or additional
false
colour)
SEM
IMAGE
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