AC Modes 6
Agilent 5500 SPM User’s Guide 104
Acoustic AC Mode (AAC)
In Acoustic AC (AAC) Mode AFM, a piezo-electric transducer in the
nose assembly drives the cantilever oscillation. Note that the nose
assembly (Figure 71) includes two contact pins through which the drive
signal is routed to the transducer. AAC Mode probe cantilevers have
resonance frequencies typically in the 100-300 kHz range. Any sample
plate can be used.
Figure 71 AAC Mode nose assembly
AAC Mode
1 To image in AAC Mode, first follow the steps from Chapter 4:
a Insert the nose assembly into the scanner.
b Insert a probe into the nose assembly.
c Place the scanner in the microscope base.
d Align the laser on the cantilever.
e Insert and align the detector.
f Prepare the sample and place it on the sample plate.
g Adjust the video system to focus on the cantilever.
2 Use the manual screws for coarse approach.
3 Use the Close switch on the HEB for a final approach to bring the tip
close to, but not touching, the sample.
4 In PicoView choose Mode > ACAFM.
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