A review on fundamentals, constraints and fabrication techniques of superhydrophobic coatings

Fabrication of superhydrophobic transparent cyclic olefin copolymer (COC)‐SiO2 nanocomposite surfaces

“…Superhydrophobic surfaces are described as surfaces having contact angles larger than 150 0 with water and play significant roles in many scientific and industrial areas, such as, self-cleaning surfaces, [1][2][3][4] anti-ice surfaces, [5][6][7] anticorrosion, 8,9 oil-water separation, 10,11 and so on. Various approaches have been utilized to produce superhydrophobic surfaces containing plasma etching, 12 chemical vapor deposition, 13 electrospinning, 14,15 phase separation, 16,17 and so on.…”

“…11,[18][19][20][21][22][23] The contact angles on superhydrophobic surfaces and the effect of roughness are generally presented in two models by explaining different physical mechanisms. 3,[24][25][26][27][28][29][30][31][32] In Wenzel model, the water droplet penetrates roughness and fully wets the solid surface under it. 24 In Cassie-Baxter model, droplet sits on the air pockets that exist between the roughness and only wets the top area of the surface bulges.…”

“…Two main factors control the hydrophobicity of a surface: one is to reduce the surface free energy value of the surface and the other is to produce micro/nanoscale roughness on the top of the surface 11,18–23 . The contact angles on superhydrophobic surfaces and the effect of roughness are generally presented in two models by explaining different physical mechanisms 3,24–32 . In Wenzel model, the water droplet penetrates roughness and fully wets the solid surface under it 24 .…”

Facile Construction of Superhydrophobic Surfaces by Coating Fluoroalkylsilane/Silica Composite on a Modified Hierarchical Structure of Wood

“…The superhydrophobic property of the surface is controlled by its chemical composition and topography. The cooperation of micro/nano scale hierarchical structures with low-surface energy materials has been the main strategy to fabricate superhydrophobic surfaces [7]. Through years of extensive efforts, many chemical and physical methods that generate superhydrophobic surfaces have been developed, such as plasma polymerization/etching [8], chemical vapor deposition [9][10][11][12], solvent-mediated phase separation [13], and polymer self-assembly [14][15][16].…”

A Facile Method to Prepare a Superhydrophobic Magnesium Alloy Surface

“…Found on many animals and plants, such as lotus leaf surface, mosquito’s eyes, and water strider’s legs [ 1 , 2 , 3 ], superhydrophobicity is a common phenomenon in nature. Material surfaces, with a water contact angle greater than 150° and a rolling angle less than 10°, are usually called superhydrophobic surfaces [ 4 ]. Superhydrophobic surfaces are gaining more and more research attention due to their great properties of anticorrosion [ 5 , 6 , 7 ], drag reduction [ 8 , 9 , 10 ], self-cleaning [ 11 , 12 ] and anti-icing [ 13 ].…”