2012
DOI: 10.1016/j.jcis.2011.11.004
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Contact angles of drops on curved superhydrophobic surfaces

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Cited by 46 publications
(26 citation statements)
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“…Then its surface energy simply writes E′ ∼ 2πR′ , i.e., about 25%: Drops in this case are drawn by surface tension. The driving force should be smaller if the apparent angle θ is larger than 90°, owing to the presence of nanogrooves: then, the liquid far from the tip forms a spherical cap of radius R′ = Rð1=2 − ð3 cosθ=4Þ + ðcos 3 θ=4ÞÞ −ð1=3Þ sitting on a cylinder (12,(16)(17)(18), of corresponding surface energy E′:…”
mentioning
confidence: 99%
“…Then its surface energy simply writes E′ ∼ 2πR′ , i.e., about 25%: Drops in this case are drawn by surface tension. The driving force should be smaller if the apparent angle θ is larger than 90°, owing to the presence of nanogrooves: then, the liquid far from the tip forms a spherical cap of radius R′ = Rð1=2 − ð3 cosθ=4Þ + ðcos 3 θ=4ÞÞ −ð1=3Þ sitting on a cylinder (12,(16)(17)(18), of corresponding surface energy E′:…”
mentioning
confidence: 99%
“…Adhesion is difficult to quantify at a fundamental level [15][16][17][18]. Hydration forces, hydrophobic interactions, macromolecular bridging, surface roughness, electrical double-layer and van der Waals forces all have possible influences on adhesion [19][20][21]. Wetting of surfaces involves both surface chemistry and surface geometry.…”
Section: Introductionmentioning
confidence: 99%
“…Wetting of surfaces involves both surface chemistry and surface geometry. Surface geometry can be considered either as local, such as surface roughness, or it can be considered globally, such as spheres, cylinders or fibres [9,21]. Therefore, differences in surface energy increase due to the surface roughness or chemical nature of material must be distinguished.…”
Section: Introductionmentioning
confidence: 99%
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“…1(b). In addition, h could be quantified through another proposed equation h ¼ hðh 0 ; r; RÞ, where the droplet radius r is experimentally measured [19]. Besides spherical surfaces, a recent study extended the theory to concave surfaces and proposed a different wetting equation h ¼ hðV L ; a; RÞ, where the droplet volume (V L ) could be manually controlled in the experiment [20], Fig.…”
Section: Introductionmentioning
confidence: 99%