Texture lines on a hard disk

size is 10 µm x 10 µm,

Z-height is 1.2 nm.

Structured silicon wafer

Image size 20 µm x 20 µm,

Z-height is 1000 nm.

Scratch on a hard disk

Image size is 10 µm x 10 µm,

Z-height is 3.6 nm.

Simultaneously acquired image of the topography (above)

on a hard disk and its magnetic structure (below).

Image size is 19.5 µm by 19.5 µm.

Simultaneously acquired image of the topography (above)

on a read/write head (pole tip) and its work function difference (below).

The SSPM (scanning surface potential microscopy) module was used

to measure these data. Image size is 15 µm by 15 µm.