Thesis-PDF - IAP/TU Wien
Thesis-PDF - IAP/TU Wien
Thesis-PDF - IAP/TU Wien
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Figure 3.14: This force curve shows the effect of tip interaction with a<br />
sticky surface. Upon retraction (blue curve) the cantilever tip is hold back<br />
until the pull off force is great enough to break the remaining bonds between<br />
tip and surface. Steps in the curve (arrows) indicate individual unbinding<br />
events happening until full detachment.<br />
Figure 3.15: This force curve Biological soft material, force curve<br />
3.4.2 Addition of Matter<br />
- Dip-Pen lithography. The cantilever tip is used to take up material (by<br />
contacting it or dipping into it) and deposit it at a given position.<br />
- Aggregation of surface particles into the area of interest. E.g. the pushing<br />
of nanoparticles of La 0.7 Sr 0.3 MnO 3 ([77]).<br />
3.4.3 Removal of Matter<br />
- AFM has been used for nanofabrication ([78], [79], [80]) and nanomachining<br />
([81]).<br />
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