~ ATOMIC FORCE MICROSCOPE ~. Feedback Loop. Laser. V. Photodiode. Piezo Crystal. Mirror. Tip. Substrate. ThermoMicroscopes Explorer AFM. HOW DOES IT WORK?.
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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.
WHAT CAN WE LEARN?
AFM Image and manipulation of an Adenovirus.