Figure 2. The circuit installed for the OTI mode and its operation. (IMAGE)

Kanazawa University

Figure 2. The circuit installed for the OTI mode and its operation.

Caption

(a) During retrace scanning, a DC offset signal (<i>A<sub>os </sub></i>< 0) is added to the amplitude signal (<i>A</i>). The feedback control operates as if the probe were in strong contact with the sample, and thus the sample stage is moved away from the tip. (b) Driving signal for X-scanner in the OTI mode (top), DC offset signal added to true amplitude signal (middle), and Z-scanner displacement (bottom).

Credit

Kanazawa University

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