Atomic force microscope
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~ ATOMIC FORCE MICROSCOPE ~. Feedback Loop. Laser. V. Photodiode. Piezo Crystal. Mirror. Tip. Substrate. ThermoMicroscopes Explorer AFM. HOW DOES IT WORK?.

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Atomic force microscope
~ ATOMIC FORCE MICROSCOPE ~

Feedback Loop

Laser

V

Photodiode

Piezo

Crystal

Mirror

Tip

Substrate

ThermoMicroscopes Explorer AFM

HOW DOES IT WORK?

The atomic force microscope (AFM), a scanning probe microscope, obtains topographical information at the nano-scale. A sharp tip attached to the end of a cantilever rasters across an area while a laser and photodiode are used to monitor the tip force on the surface. A feedback loop between the photodiode and the piezo crystal maintains a constant force during contact mode imaging and constant amplitude during intermittent contact mode imaging.


Atomic force microscope1
~ ATOMIC FORCE MICROSCOPE ~

Imaging direction

TIP

Height

Rc

Width

WHAT CAN WE LEARN?

Topography

Mechanical Properties

Elasticity

Friction

AFM Image and manipulation of an Adenovirus.

Binding


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