212
PART 2
QUANTUM MECHANICS AND SPECTROSCOPY
Computer:
Scan generation and
image display
(a)
Singletube
piezo
Electronics:
Positioning and feedback control
Signal conditioning
High voltage
piezo drive
Preamp
Tip bias
Current
collection
conversion
i
v
Tunneling current
Scan
(b)
Figure 10.12
A schematic
representation of (a)
a scanning tunneling
microscope with (b)
an expanded view of
the probe.
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