
Interleave Scanning
Use of LiftMode with TappingMode
252 Dimension 3100 Manual Rev. D
14.5.2 Setpoint Selection
When the main and interleave Drive amplitudes and Drive frequencies are equal (bullets under
Interleave Controls disabled), the cantilever oscillation amplitude increases to the free oscillation
amplitude when the tip is lifted off the surface in LiftMode. If a small setpoint value forces the
oscillation amplitude low while the feedback is running, the amplitude can grow considerably when
the tip is lifted free of the sample surface. The change can also be large if the main Drive
amplitude was increased or the main Drive frequency altered after the tip was engaged. (The
vibration amplitude remains at the setpoint during the main scan even if these parameters are
changed.) This could make the tip hit the surface in the lift scan for small Lift scan Heights.
14.5.3 Interleave Drive Amplitude and Frequency Selection
The cantilever drive amplitude can be set differently in the Lift scan as compared to the main scan
by toggling the flag on the left of the corresponding Interleave Control to “on” (green) and
adjusting the value. This allows the tuning of a measurement in the Lift scan lines without
disturbing the topography data acquired during the Main scan lines. The Interleave Drive
amplitude must be set low enough that the tip does not strike the surface during the Lift pass.
The Interleave Drive frequency can also be adjusted, which may be useful if acquiring amplitude
data in LiftMode; see Chapter 15.
Note: The cantilever drive circuit features a filter capacitor to limit the rate at which
the drive amplitude is changed between Main and Interleave scanning. If
using scan rates above a few hertz, it may be advantageous to remove or disable
the filter. For more information on how to disable the filter, contact Veeco
technical support.
WARNING: Before enabling the Interleave Drive Amplitude, check that its
value is not much larger than the main Drive Amplitude value to
prevent possible damage to the tip.
AVERTISSEMENT:Lors d’un travail en mode intercalé (Interleave Mode), vérifier
que la tension appliquée pour osciller le bras de levier lorsqu’il est
en positon haute n’est pas beaucoup plus importante que la tension
appliquée lorsque ce même bras de levier est en position basse
(Main Drive Amplitude). Le non respect de cette procédure peut
entraîner la destruction de la pointe.
WARNUNG: Bevor Sie im Interleave-Mode die “Interleave Drive-
Amplitude“ einschalten, vergewissern Sie sich bitte, daß der dort
eingetragene Wert nicht wesentlich größer ist, als der Wert der
“Main Drive-Amplitude“, um evtl. Beschädigungen der Spitze
vorzubeugen.
Kommentare zu diesen Handbüchern