JEOL JSPM-5200 Instructions Manual page 135

５ MEASUREMENT OPERATION
■ Surface potential observation
SKPM (Scanning Kelvin Probe Microscopy) is an optional function that requires a
lock-in amplifier supplied to order. Connect the lock-in amplifier to the SPM controller
and set the software in accordance with the procedure in Section 5.2.5, "Lock-in
amplifier."
Topo graphical image
Observe the topographical image of a sample; make su
satisfactory; then click on the
Setti ng the lock-in amplifier
Carry out the same procedure as in Section 5.4.4, "Setting the lock-in
amplifier."
Setting the bias voltage
1.
Input 0.000 in the Bias input box in the Bias Voltage frame of the Advanced
tab window.
2.
Click on the Advanced button to open the Advanced Control window.
3.
Click on the Scan tab in the Advanced Control window.
4.
Check the Add External Bias signal checkbox.
Setting the SKPM parameters
Carry out the same procedure a
parameters."
SKPM image
1.
Obtain a desirable topographical image (see Section 5.4.2).
2.
Stop scanning and enter the following parameters
a.
Select 2 Inputs from the Acquisition selection pull-down menu in the Scan
frame of the Advanced tab window.
b.
Select SKPM from the Mode selection pull-down menu.
c.
Enter information in the Display Source frame as follows:
5-72
(SKPM)(optional)
Retract On button to retract the tip.
s in Section 5.4.4, "Setting the KFM
re that the image is
TMPM5200-2