🗊Презентация Scanning tunneling microscope (STM)

Категория: Технология
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Scanning tunneling microscope(STM)
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Scanning tunneling microscope(STM)

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History
STM was invented in 1981 by Gerd Binnig and Heinrich Rohrer (IBM Zurich). 
Five years later, they were awarded the Nobel Prize for their invention in physics.
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History STM was invented in 1981 by Gerd Binnig and Heinrich Rohrer (IBM Zurich). Five years later, they were awarded the Nobel Prize for their invention in physics.

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Surface scanning methods
Constant height mode - at a constant tip height, measure the strength of the tunnel current
Constant tunneling current mode - the tip changes the height at a certain current value
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Surface scanning methods Constant height mode - at a constant tip height, measure the strength of the tunnel current Constant tunneling current mode - the tip changes the height at a certain current value

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Restrictions
Sample surface resistance
Groove geometry
Needle sharpening
Vacuum
Mechanical collision
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Restrictions Sample surface resistance Groove geometry Needle sharpening Vacuum Mechanical collision

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Thank you for your attention!
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Thank you for your attention!



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