 |
 |
| A 3D optical microscope image of the part of the same fingerprint as above. It shows the fingerprint ridges (as light areas) and the deposited polymer (as dark areas). The dark "dots" in the light areas are the gaps left by sweat pores that have been filled by polymer; this is so-called "third level" detail. |
| © 2023 SPIE Europe |
|
