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In a recent paper published in Journal of Bionic Engineering, researchers from BERG-IBB studied the topography and wettability of the underside of English weed (Oxalis pes-caprae) leaves using epoxy replicas created via a two-step casting process. Leaves were found to be close to super hydrophobic due to the presence of a characteristic pattern of irregular 100 µm – 200 µm × 60 µm convex papillae. The water repellency properties of such microstructured surfaces may have important applications, including self-cleaning, anti-microbial and anti-fouling.
Photo details: SEM image of an epoxy replica of the leaf of English weed. P.M. Pereira, 2013.
Via iBB
