Wettability tailored superhydrophobic and oil-infused slippery aluminium surface for improved anti-corrosion performance

Peethan, Alina; Pais, Mikitha; Rao, Padmalatha; Singh, Kulwant; George, Sajan D.

doi:10.1016/j.matchemphys.2022.126517

Cited by 14 publications

(6 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The image (image-charge) forces were shown to considerably contribute to the stability of wetting films of nonpolar liquids on various substrates. ,,,, However, due to the mathematical complexity of the problem, so far, only the single-layer wetting films were considered analytically. Meanwhile, as noted above, the most prospective state-of-the-art applications of liquid-infused surfaces − usually involve stratified films that contain at least two thin dielectric layers. To correctly account for the effect of image forces on the stability of a lubricating film, we first consider the electrostatic problem of the distribution of electric potential and electric field strength in two model systems imitating the conditions of the lubricating layer in slippery coatings as sketched in Figure .…”

Section: Resultsmentioning

confidence: 99%

Effect of Water Adsorption on Lubricating Film Stability in Slippery Coatings

Boinovich,

Emelyanenko,

Emelyanenko

2024

Langmuir

View full text Add to dashboard Cite

The absorption of water by slippery coatings is a ubiquitous phenomenon that arises due to small but finite water dissolution during the contact of aqueous media with lubricants. In this study, using the concept of surface forces, we have analyzed the influence of trace amounts of water in lubricants on the stability of slippery coatings for both coatings with hydrophilic porous bases, prone to form hydrogen bonds with water, and those with hydrophobic porous bases. To perform such analysis, we have considered for the first time the electrostatic problem of the distribution of the electric potential and electric field strength in stratified films that contain two thin dielectric layers imitating the lubricant and a hydrophobic layer sandwiched between the porous substrate and air or water. Based on the developed approach, the equations for the calculation of the excess free energy and the disjoining pressure, associated with water dissolution in the lubricant film, were derived. An analysis of the excess film energy and the contribution of the image interaction to the disjoining pressure isotherm indicates that the dissolved water can both stabilize and destabilize the oil film, depending on the ratio of the static and dynamic dielectric permittivities of the lubricant and the phases confining the film. The results of calculations and simple experiments carried out here indicate much better water contact stability of silicone films impregnating a hydrophobized porous substrate than films impregnating a hydrophilic porous substrate. The obtained results indicate the preference for using the hydrophobic bases for the fabrication of long-lived slippery coatings characterized by better preservation of slippery functional properties under conditions of lubricant depletion and prolonged contact with water.

show abstract

Section: Resultsmentioning

confidence: 99%

Effect of Water Adsorption on Lubricating Film Stability in Slippery Coatings

Boinovich,

Emelyanenko,

Emelyanenko

2024

Langmuir

View full text Add to dashboard Cite

show abstract

“…Silicone oil and mineral oil are widely used as low-cost and stable lubricants in the preparation of SLIPS. Peethan et al 132 chose silicone oil as the lubricant to inject into porous superhydrophobic surfaces after chemical etching. Zhang et al 133 chose mineral oil to be injected into porous structures prepared by a soft etching technique.…”

Section: Slips Lubricating Oil Injection Process and Choice Of Lubric...mentioning

confidence: 99%

Recent advances of slippery liquid-infused porous surfaces with anti-corrosion

et al. 2023

View full text Add to dashboard Cite

show abstract

“…Since the 1950s, thousands of AAO-related papers have been published in international journals, covering a wide range of applications. These include nanomaterial synthesis [7,[29][30][31][32], electrical humidity sensors [33][34][35][36][37][38][39][40][41][42][43][44][45][46], optical sensors [47][48][49][50][51][52][53], photonic and electronic devices [54][55][56][57][58][59][60][61][62][63][64], photocatalysis [65][66][67], bio-applications [68][69][70], and other fields [71][72][73], as highlighted in Figure 1. A noteworthy contribution to AAO-based nanomaterial synthesis is the work proposed by Masuda et al [74...…”

Section: Overview Of Nanoporous Aao and Its Applicationsmentioning

confidence: 99%

Advances in the Fabrication of Nanoporous Anodic Aluminum Oxide and Its Applications to Sensors: A Review

Ku,

Yu,

Hung

et al. 2023

Nanomaterials

View full text Add to dashboard Cite

Nanoporous anodic aluminum oxide (AAO) is an important template for 1D nanomaterial synthesis. It is used as an etching template for nanopattern transfer in a variety of contexts, including nanostructured material synthesis, electrical sensors, optical sensors, photonic and electronic devices, photocatalysis, and hardness and anticorrosion improvement. In this review, we focus on various fabrication methods, pore geometry modification, and recent advances of AAO, as well as sensor applications linked to our environment, daily life, and safety. Pore geometry is concerned with the material composition, applied voltage mold, electrolyte type, temperature, and anodizing time during the fabrication of AAOs and for adjusting their pore size and profile. The applied voltage can be divided into four types: direct current anodization (DCA), reverse pulse anodization, pulse anodization (PA), and hybrid pulse anodization (HPA). Conventional AAOs are fabricated using DCA and mild anodization (MA) at a relatively low temperature (−5~15 °C) to reduce the Joule heating effect. Moreover, the issues of costly high-purity aluminum and a long processing time can be improved using HPA to diminish the Joule heating effect at relatively high temperatures of 20–30 °C with cheap low-purity (≤99%) aluminum. The AAO-based sensors discussed here are primarily divided into electrical sensors and optical sensors; the performance of both sensors is affected by the sensing material and pore geometry. The electrical sensor is usually used for humidity or gas measurement applications and has a thin metal film on the surface as an electrode. On the contrary, the AAO optical sensor is a well-known sensor for detecting various substances with four kinds of mechanisms: interference, photoluminescence, surface plasma resonance, and surface-enhanced Raman scattering (SERS). Especially for SERS mechanisms, AAO can be used either as a solid support for coating metal nanoparticles or a template for depositing the metal content through the nanopores to form the nanodots or nanowires for detecting substances. High-performance sensors will play a crucial role in our living environments and promote our quality of life in the future.

show abstract

Wettability tailored superhydrophobic and oil-infused slippery aluminium surface for improved anti-corrosion performance

Cited by 14 publications

References 45 publications

Effect of Water Adsorption on Lubricating Film Stability in Slippery Coatings

Effect of Water Adsorption on Lubricating Film Stability in Slippery Coatings

Recent advances of slippery liquid-infused porous surfaces with anti-corrosion

Advances in the Fabrication of Nanoporous Anodic Aluminum Oxide and Its Applications to Sensors: A Review

Contact Info

Product

Resources

About