An Atomic Force Microscope Consists of a Cantilever with a Very

question 33

Multiple Choice

An atomic force microscope consists of a cantilever with a very fine tip on one end. The lever is driven by a piezoelectric motor allowing the tip to scan a surface on an atomic scale. As it scans the surface, what is the main frictional force between the tip and the surface?

• A) static
• B) kinetic
• C) rolling
• D) all three
• E) There is no frictional force.

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