FPN experiments

FPN probes sometimes don't scan properly due to bending laterally. There are 2 cases.

• The head of the cantilever is pinned.
• The motion of the head part of the cantilever is slower than that of the body especially when the scan changes the scan direction.

If the contact is maintained for ~30 seconds while the head is pinned, a puddle of molecules is observed when imaged with switched silicoon nitride tip. Aforementioned experiment was tested with cantilevers #3 and 4 of the chip #7.