Engineered antifouling microtopographies–effect of feature size, geometry, and roughness on ttlement of zoospores of the green alga Ulva
期刊名称： Biofouling
作者： Schumacher, James F.,Carman, Michelle L.,Estes, Thomas G.,Feinberg,
Adam W.,Wilson, Leslie H.,Callow, Maureen E.,Callow, James A.,Finlay, John
A.,Brennan, Anthony
B.
年份： 2007年
期号： 第1期
关键词： Biofouling;surface topography;microtopography;antifouling;algae; Ulva
摘要：The effect of feature size, geometry, and roughness on the ttlement of zoospores of the ship fouling alga Ulva was evaluated using engineered microtopographies in polydimethylsiloxane elastomer. The topographies studied were designed at a feature spacing of 2 m and all significantly reduced spore ttlement compared to a smooth surface. An indirect correlation between spore ttlement and a newly described engineered roughness index (ERI) was identified. ERI is a dimensionless ratio bad on Wenzel's roughness factor, depresd surface fraction, and the degree of freedom of spore movement. Uniform surfaces of either
2 m diameter circular pillars (ERI = 5.0) or 2 m wide ridges (ERI = 6.1) reduced ttlement by 36% and 31%, respectively. A novel multi-feature topography consisting of 2 m diameter circular pillars and 10
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