Deposition of superhydrophobic nanostructured Teflon-like coating using expanding plasma arc

Satyaprasad, A.; Jain, Vipul; Nema, Sudhir Kumar

doi:10.1016/j.apsusc.2006.12.085

Cited by 102 publications

(56 citation statements)

References 19 publications

(20 reference statements)

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“…The usual deposit looks much like a cauliflower head and has a fractal morphology with a very high surface area. Such surfaces are cheap to make on relatively small scale and can be made in a variety of materials [83,84,85,86].…”

Section: Diffusion Limited Growthmentioning

confidence: 99%

An introduction to superhydrophobicity

Shirtcliffe

McHale

Atherton

et al. 2010

Advances in Colloid and Interface Science

556

373

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Section: Diffusion Limited Growthmentioning

confidence: 99%

An introduction to superhydrophobicity

Shirtcliffe

McHale

Atherton

et al. 2010

Advances in Colloid and Interface Science

556

373

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“…Superhydrophobicity is currently the focus of considerable research because of its scientific and technological importance [1], [2], [3], [4], [5] and [6]. Many plants and insects feature surface microstructures covered with waxy tissues which make them superhydrophobic, i.e.…”

Section: Introductionmentioning

confidence: 99%

Superhydrophobic properties of silver-coated films on copper surface by galvanic exchange reaction

Safaee¹,

Sarkar²,

Farzaneh³

2008

Applied Surface Science

112

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Hydrophobic properties of thin nanostructured silver films produced by galvanic exchange reaction on a copper surface were studied after passivation with stearic acid.The morphology of the silver films was controlled by varying the concentration of silver nitrate in the solution. Water contact angle as high as 156° and contact angle hysteresis as low as 5° were achieved for samples obtained with initial silver ion concentration of 24.75 mM in the solution. However, a strong dependence of contact angle and contact angle hysteresis on the fractal-like morphology of the silver films was observed with the variation of silver ion concentration.

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“…It was found that as the surface roughness increases, the contact angle of the metallic nanorods decreases and therefore these nanostructures resulted in hydrophilic surfaces. On the other hand, many studies have focused on utilizing Radio Frequency (RF) sputtering technique to deposit Polytetrafluoroethylene (PTFE), commonly known as Teflon, on rough surfaces to get superhydrophobic surfaces [2][3][4][5][6][7][8]. It has been documented that an increase in PTFE film surface roughness increases the contact angle of water and therefore hydrophobicity without altering the surface chemistry [2,3].…”

Section: Introductionmentioning

confidence: 99%

Hydrophobic Metallic Nanorods coated with Teflon Nanopatches by Glancing Angle Deposition

2009

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Introducing a hydrophobic property to vertically aligned hydrophilic metallic nanorods was investigated experimentally and theoretically. First, platinum nanorod arrays were deposited on flat silicon substrates using a sputter Glancing Angle Deposition Technique (GLAD). Then a thin layer of Teflon (nanopatches) was partially deposited on the tips of platinum nanorod at a glancing angle of θ = 85 o as well as at normal incidence (θ = 0 o ) for different deposition times. We show that GLAD technique is capable of depositing ultrathin isolated Teflon nanopatches on selective regions of nanorod arrays due to the shadowing effect during GLAD. Contact angle measurements on Pt/Teflon nano-composite have shown contact angle values as high as 138 o , indicating a significant increase in the hydrophobicity of originally hydrophilic Pt nanostructures. Finally, a 2D simplified wetting model utilizing Cassie and Baxter theory of heterogeneous surfaces has been developed to explain the wetting behavior of Pt/Teflon nanocomposite.

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Deposition of superhydrophobic nanostructured Teflon-like coating using expanding plasma arc

Cited by 102 publications

References 19 publications

An introduction to superhydrophobicity

An introduction to superhydrophobicity

Superhydrophobic properties of silver-coated films on copper surface by galvanic exchange reaction

Hydrophobic Metallic Nanorods coated with Teflon Nanopatches by Glancing Angle Deposition

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