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Dual‐Scale Roughness Produces Unusually Water‐Repellent Surfaces
Author(s) -
Shirtcliffe N. J.,
McHale G.,
Newton M. I.,
Chabrol G.,
Perry C. C.
Publication year - 2004
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200400315
Subject(s) - materials science , surface finish , lotus effect , water repellent , surface roughness , scale (ratio) , nanotechnology , lotus , composite material , organic chemistry , chemistry , physics , quantum mechanics , botany , biology , raw material
Super‐hydrophobicity can be achieved on relatively smooth surfaces . Short, wide pillars on slightly rough surfaces are shown to produce super‐hydrophobic surfaces (see Figure) where neither the pillars nor the slight roughness suffice alone. This use of two length scales to create super‐hydrophobic surfaces directly mimics the mechanism used by some plants including the lotus.