© ICSPI Corp. 2007-2021
nGauge AFM User Manual 2.0
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When you are done scanning or do not want to scan, click on
Disengage
to disengage the tip.
The disengage
routine will take a few seconds and the Approach status will change to ‘sample
not in contact’ and the Amplitude will increase:
You can safely click and hold on the
Retract
button to move the sample platform downward
away from the tip.
Important:
Always disengage the tip and retract the sample away from the tip when the
nGauge is not in use.
Important:
If the tip is engaged with the sample and the tip is not on the target area, you must
click on
Disengage
and then click and hold on
Retract
to move the sample platform away from
the tip before re-positioning the sample.
5.5.1.
Amplitude Graph
There are two graphs on the Approach page. The first graph represents the cantilever oscillation
amplitude, and the second graph represents the Fine Z value, which represents the tip height.
When the tip is far away from the sample and oscillating in free air, it will have an oscillation
amplitude that is the same as it was set on the Sweep page.
The setpoint is the dotted line in the middle of graph. By default, the setpoint is set to half of the
free air oscillation amplitude.