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Electric Techniques
Electric Force Microscopy
290 Dimension 3100 Manual Rev. D
16.2.3 Electric Force Microscopy Procedures
Note: Amplitude detection is the only procedure described here that can be performed
without the Extender Electronics Module; however, this method is no longer
recommended (see Section 16.2.6).
1. Verify the following electric force microscopy preparation is complete:
a. Jumper Configurations
b. Extender Electronics Module Settings (see Figure 16.1b and Table 16.2a).
c. Analog 2 settings in software (see Page 278).
2. Electrically connect the sample by mounting it to a standard sample disk or stage using
conducting epoxy or silver paint.
3. Verify the connection is good (a poor connection introduces noise).
Note: If an external power supply connects directly to leads on the sample itself, it is
important to electrically isolate the sample from the stage. A piece of Kapton
tape covering the bottom of a sample puck works well.
4. Mount a metal-coated NanoProbe cantilever into the electric field cantilever holder.
Note: MFM-style cantilevers (225 µm long, with resonant frequencies around 70
kHz, models MESP and SCM-PIT) usually work well. It is also possible to
deposit custom coatings on model FESP silicon TappingMode cantilevers.
Make sure that any deposited metal you use adheres strongly to the silicon
cantilever.
5. Set up the AFM as usual for TappingMode operation.
6. Select View > Sweep > Cantilever Tune.
7. Follow the procedure below for the type of electric force imaging desired, Phase Detection,
Frequency Modulation or Amplitude Detection (see sections 16.2.4 through 16.2.6).
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