Agilent Technologies E5500 Series Guia do Utilizador descarregar pdf (Página 79)

Preparing for Imaging 4

Agilent 5500 SPM User’s Guide 79

Inserting and Aligning the Detector

As mentioned earlier, the photodiode detector records changes in the

position of the laser spot as the cantilever passes over the sample

surface. As shown in Figure 54, the detector senses the laser’s

movement between its four quadrants, reporting the AFM (vertical

deflection), LFM (lateral, or friction), and SUM signals.

Figure 54 Photodiode detector operation

To install the photodiode detector, insert it into the scanner until it stops

(Figure 55). Plug the detector cable into the Detector socket on the

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Agilent Technologies E5500 Series Guia do Utilizador Página 79