Nanosurf easyScan 2 AFM, Руководство по эксплуатации

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H
ARDWARE SETUP
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be automatically set so that the phase signal is zero. When ‘Auto set’ is ena-
bled the phase reference is automatically set after finishing the approach.
Clicking
starts the automatic setting immediately.
Force Modulation mode
In addition to the parameters in the Static Force operating mode, two addi-
tional parameters are available.
Excitation amplitude
The amplitude of the sensor excitation during a force modulation mode
measurement.
Excitation frequency
The frequency of the sensor excitation during a force modulation mode
measurement. Clicking
starts a measurement of the cantilever reso-
nance curve, that helps you to select the excitation frequency. The settings
for this measurement are the same as those for the Dynamic Force measure-
ment.
Spreading Resistance mode
The operating mode panel for the Spreading Resistance mode is the same
as that for Static Force operating mode.
The Z-Controller Panel
The tip-sample interaction is normally kept constant using the Z-Control-
ler. The Z-Controller is a PI(D) controller as is shown in figure
Z- Control-
ler . The settings of this controller are set in the Z-Controller panel. To open
the Z-Controller panel, click in the Navigator.
Z-Controller (Easy, Standard, Advanced)
Set point (Easy, Standard, Advanced)
The working point for the Z-Controller. Depending on the operating
mode, this is the tunneling current (STM mode), cantilever deflection
(static force mode) or relative cantilever vibration amplitude (dynamic force
mode). In the latter case, the set amplitude is relative to the operating
amplitude, set in the Operating mode panel. For example, when a set point