Non-fluorinated superhydrophobic Al7075 aerospace alloy by ps laser processing

Fluorine-Free Superhydrophobic Surface by Single-Step-Synthesized Homogeneous Polymeric Raspberry Nanoparticle Coating

“…In contrast to the many studies in morphological controls for superhydrophobicity, there are few reports on non-fluorine-type homogeneous material innovations to impart superhydrophobicity because fluorinated materials or rare-earth materials are generally known to have the least surface energy among the synthesized molecules. − Utilizing low-surface-tension materials for superhydrophobic surfaces often requires over a two-step process which needs to coat low-surface-tension materials on nano roughness topography made of heterogeneous materials because it is very challenging to utilize homogeneous materials to fulfill the chemical and physical requirements for superhydrophobicity. − ,− Although rare-earth oxide materials serve as low-surface-tension coating materials as well as physical roughness structures, it is not scalable because of disadvantages such as high cost.…”

Influence of gas media and low pressure on the dynamics of wetting transition of laser textured stainless steel meshes during air ageing

“…In this subsection, we address the effect of low-pressure vacuum ageing on the wettability transformation of metal surfaces textured in air [22,23]. It was reported that the ageing of laser-treated samples in vacuum allows increasing the hydrophobic properties for much shorter (up to a few hours) period of time, compared with the time required for long-term air ageing.…”

Preparation and Wetting Mechanism of Laser‐Etched Composite Self‐Assembled 1H,1H,2H,2H‐Perfluorodecyltriethoxysilane Superhydrophobic Surface Coating

“…[13] The preparation of superhydrophobic surfaces by laser etching technology has become an extensive research topic. [14][15][16] Compared with ultrafast (femtosecond/ picosecond) laser processing, which is expensive and has a low processing efficiency, nanosecond laser processing is more conducive to production owing to its high processing efficiency, low manufacturing cost, simple maintenance, and high durability. [17] The use of self-assembled silane coupling agents, [18,19] stearic acid, [20] and fluorosilane, [21] among other low-surface-energy DOI: 10.1002/pssa.202100568 Herein, a grid-like microstructure is prepared on the surface of 3Cr13 stainless steel through nanosecond laser etching, and the self-assembled 1H,1H,2H,2Hperfluorodecyltriethoxysilane (PFDS) coating is further composited to prepare a superhydrophobic surface with a contact angle of 164 and a rolling angle of 3 .…”