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Chapter 2
Chapter 2/3 Test
5
Chemistry
Undergraduate 1
02/14/2013

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Term
What is scanning tunneling microscopy (STM)?
Definition
  • Def: A technique that can image, and even move, individual atoms and molecules
  • Discovered by Gerd Binnig and Heinrich Rohrer
Term
How does a scanning tunneling microscope work?
Definition
  • By moving an extremely sharp electrode over a surface and measuring the resulting tunneling current.
Term
electrode
Definition
  • Def: an electrical conductor.
Term
tunneling current
Definition
  • Def: The electrical current that flows between the tip of the electrode and the surface even though the two are not in physical contact.
  • Extremely sensitive to distance.
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