Robust fabrication of μ-patterns with tunable and durable wetting properties: hydrophilic to ultrahydrophobic via a vacuum process

Jagdheesh, R.; Díaz, María Asunción Romero; Marimuthu, Sundar; Ocaña, José L.

doi:10.1039/c7ta01385j

Cited by 81 publications

(65 citation statements)

References 44 publications

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“…Jagdheesh et al used a nanosecond laser light source on the stainless-steel plate to produce a single roughness micropattern. The as-prepared surface showed excellent superhydrophobicity with a roll-off angle of 5 • and a static contact angle of 180 • [15]. However, this method needs special equipment.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Superhydrophobic Steel Surfaces with Chemical Stability and Corrosion

Tian

et al. 2019

Coatings

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Corrosion seriously limits the long-term application of Q235 carbon steel. Herein, a simple fabrication method was used to fabricate superhydrophobic surfaces on Q235 carbon steel for anticorrosion application. The combination of structure and the grafted low-surface-energy material contributed to the formation of superhydrophobic steel surfaces, which exhibited a water contact angle of 161.6 • and a contact angle hysteresis of 0.8 • . Meanwhile, the as-prepared superhydrophobic surface showed repellent toward different solutions with pH ranging from 1 to 14, presenting excellent chemical stability. Moreover, the acid corrosive liquid (HCl solution with pH of 1) maintained sphere-like shape on the as-prepared superhydrophobic surface at room temperature, indicating superior corrosion resistance. This work provides a simple method to fabricate superhydrophobic steel surfaces with chemical stability and corrosion resistance.

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Section: Introductionmentioning

confidence: 99%

Preparation of Superhydrophobic Steel Surfaces with Chemical Stability and Corrosion

Tian

et al. 2019

Coatings

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“…However, posterior to the hydroxylation process, the presence of water vapor molecules in the atmosphere stimulates the adsorption of a second layer of non-dissociated water molecules through the formation of hydrogen bonds with the preadsorbed hydroxyl groups present on the hydroxylated surfaces of oxides, which hinders the further adsorption of hydrocarbons, 28,36,46 since these reactive sites are passivated. Jagdheesh et al 47 reported that when using a vacuum process, lubricating oils present in the pumping mechanisms may release organic molecules into the vacuum chamber and contaminate the sample. Consequently there is a more efficient adsorption of hydrocarbons, due to the very low partial pressure of water vapor that can be reached at high vacuum.…”

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confidence: 99%

Influence of ambient conditions on the evolution of wettability properties of an IR-, ns-laser textured aluminium alloy

et al. 2017

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aMicro cell structures of different sizes were patterned using a nanosecond near-infrared laser source on Al2024 aluminium alloy plates with 2 mm thickness. The influence of laser parameters on the shape and size of the produced patterns were studied together with the evolution of wettability properties over time for different storage conditions. Samples were found to be superhydrophobic from a single step laser patterning, requiring no further treatment. Exposure to ambient air was shown to be a key factor in the property changes of the samples over time. The produced surface patterns with different laser parameter settings were correlated with the contact angle measurements, revealing a great influence of the amount of recast material on the hydrophobic properties. X-Ray photoelectron spectroscopy was used to study the impact of surface chemistry changes on hydrophobicity, analysis of elemental composition proved that chemisorbed organic molecules present in the ambient air were responsible for the hydrophilic to superhydrophobic transition.

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“…As for dynamics contact angle, it is indicated by sliding angle value, where low value of sliding angle shows water will slide easily on the surface as oppose to high value. It is also reported that if the value of static contact angle is > 1500 while the sliding angle below 100, the surface can be labelled as a superhydrophobic surface (Motlagh et al, 2013;Law, 2014;Jagdheesh et al, 2017Brassard et al, 2015.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Contact Angle and Corrosion Test Measurements on Cu and CuO-Stearic Acid Modifications on Steel Surfaces

Setiawan

Trisnanto

suryani

2020

IJoCED

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In this study, a copper (Cu) coated steel surface’s dynamic con-tact angle and corrosion rate was compared to the bare steel and stearic acid modified surfaces. Various steps of surface treatment have been performed including electrodeposition of Cu, CuO formation from H2O2 immersion with stearic acid modi-fication to obtain dynamic contact angle and the corrosion rate data. The Cu-coated steel’s dynamic contact angle was increased as it implied the surface after Cu treatment was more hydro-philic than the bare steel, with sliding angle and contact angle hysteresis of 54.9o ± 2.39o and 39.5o ± 1.91o, respectively. How-ever, corrosion test measurements by using a mass loss method to quantify the corrosion rate showed that Cu-coated steel and stearic acid-modified Cu-O coated steel had no remarkable dif-ference in corrosion rate. It was found that the Cu-coated steel and stearic acid-modified Cu-O coated steel had corrosion rate eight times slower than the bare surface.

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Robust fabrication of μ-patterns with tunable and durable wetting properties: hydrophilic to ultrahydrophobic via a vacuum process

Abstract: Tunable and durable lotus effect on laser-patterned stainless steel via a vacuum process in a very short time interval.

Cited by 81 publications

References 44 publications

Preparation of Superhydrophobic Steel Surfaces with Chemical Stability and Corrosion

Preparation of Superhydrophobic Steel Surfaces with Chemical Stability and Corrosion

Influence of ambient conditions on the evolution of wettability properties of an IR-, ns-laser textured aluminium alloy

Dynamic Contact Angle and Corrosion Test Measurements on Cu and CuO-Stearic Acid Modifications on Steel Surfaces

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