Figure 1
From: The pressure sensitivity of wrinkled B-doped nanocrystalline diamond membranes

Optical images of an NCD membrane on CE2000 glass with 560 μm diameter upon increase of the applied differential pressure.
From top left to bottom right the differential pressure is 0, 0.1, 0.2, 0.3, 0. 4, 0.5 bar respectively.