Operation; Taking A Measurement; Software Settings - Ossila FOUR-POINT PROBE User Manual

Four-Point Probe System
9.

Operation

9.1

Taking a Measurement

1. Place your sample in the centre of the vertical stage.
2. Raise the platform until the probes have retracted approximately half-way into their
housing.
I. One full turn of the micrometer (after initial contact is made) is a good way to
ensure that there is good electrical contact between the probes and your sample.
II. Ensure that the probes make contact with the centre of the sample.
III. For rectangular samples, the longest edge should be aligned parallel to the probes.
3. Start the Ossila Sheet Resistance Lite software. The window shown in Figure 9.1 will open.
4. Set the appropriate settings in the software (explained in more detail in Section 9.2).
5. Click the on/off toggle button.
I. The system will attempt to pass a current between through the sample.
II. If a current can be passed though the sample, the system will measure the sheet
resistance, which will be displayed in the program.
III. If a thickness has been provided, the resistivity and conductivity will also be
displayed.
IV. The measurement will continue until the on/off toggle button is clicked or the
software is closed.
9.2

Software Settings

There are several settings in the program which must be filled in before taking a measurement.
These are found in the column on the left of the window, as shown in Figure 9.1.
Ossila.com
Figure 9.1. Ossila Sheet Reisistance Lite software.
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User Manual
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