Environmental Engineering Reference
In-Depth Information
the surface reduced
Ulva
settlement by 86%. Schumacher and co-workers [105]
designed surface topographies containing hexagonally packed 2 µm diameter circular
pillars with 2 µm spacing, 2µm sized ridges separated by 2 µm wide channels, 10 µm
equilateral triangles combined with 2 µm diameter circular pillars and the Sharklet
AF
TM
(
Figure 2.25
).
20 um
20 um
A
B
20 um
20 um
C
D
Figure 2.25
Engineered topographies on a PDMS surface: (A) Sharklet AF
™
,
(B) 10 µm equilateral triangles combined with 2 µm diameter circular pillars,
(C) hexagonally packed 2 µm diameter circular pillars, and (D) 2 µm wide ridges
separated by 2 µm wide channels [103]
Maximum reduction in spore settlement (77%) was seen with the Sharklet AF
™
topography with engineered roughness index equal to 9.5. The surface topography
made of 2 µm diameter circular pillars and 10 µm equilateral, attachments of spores
was entirely in channels between ridge walls.
