Head, Probe, & Sample Preparation
Basic AFM Operation
Rev. D
Dimension 3100 Manual
113
Figure 7.2j
Photodetector Mirror Adjustment Knobs
7.2.11 Locate Tip
For initial start-up where the Z-stage and optics have been almost fully retracted (such as when you
performed
Stage
>
Load New Sample
), use the
Focus Surface
command to move the tip closer to
the surface. It is easier to focus on the tip with more light reflecting from the surface into the optics.
To locate the tip, complete the following steps:
1. Initiate the
Locate Tip
command in the
Stage
menu by clicking on
Locate Tip
.
Note:
This command locates the tip position (Z height) using optical focal distance
measurements. When this step completes, the computer records the tip position
in memory.
2. Zoom out as far as possible using the trackball or
Zoom
Out
button. This helps you locate
the cantilever in optical field of view.
3. Once you find the tip, use the optic adjustment knobs (lower-left corner of the zoom optics
assembly) to align the optical microscope lens so the tip is centered in the video display
window.
4. Focus on the cantilever using the trackball. You can zoom in using the
Zoom
button on the
trackball.
5. Quit the
Locate Tip
sequence by pressing
ENTER
on the keyboard or clicking
OK
at the
bottom of the
Locate Tip
dialog box.
(Vertical)
AFM / TM Detector
Mirror Adjustment
(Horizontal)
LFM Detector
Mirror Adjustment
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