Contact Mode Imaging - AFM Workshop TT-AFM User Manual

Page 21
4.6. Contact Mode Imaging
These instructions assume the AFM-View software is properly loaded and working, and that you have reviewed
the features of this program presented in sect~Dn 4.2.
1) Follow the instructions in sect!on 4.2. and place sample in instrument.
2) Follow the instructions in section 4.3. and place a contact mode probe in instrument. See Appendix D for a
probe recommendation.
3) Focus the video optical microscope on the AFM probe.
4) Follow the instructions in section 4.4. to align the laser on the probe. The laser spot should be about halfway
down the cantilever; the T-8 signal must be greater than one.
S) Select "Contact" in the "Scan Mode" window.
II
Sa) Focus video microscope on sample's surface.
Sb) If this is the first scan since opening the AFM Workshop software, click on "Start" in the "Range
Check" window.
til
"
6) In the "Pre-Scan" window, use the "Manual Z Motor Control" to move the motor to the sample, probe just out
til
of focus.
"
7) In the AFM-View "Pre-Scan" window, initiate "Automated Tip Approach." Wait for the green light to indicate
that feedback was achieved.
"
7a) If the the
"z
Drive" indicator is not near the center of its range, start the automated tip approach
again.
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