A One‐Pot Universal Approach to Fabricate Lubricant‐Infused Slippery Surfaces on Solid Substrates

Abstract

Wetting is a surface phenomenon that commonly occurs in nature and has an enormous influence on human life. Slippery liquid‐infused porous surfaces have recently been developed to support the growing demand for anti‐fouling coatings. While short‐chain fluorinated compounds, commonly used to reduce the surface energy of substrates, are banned due to environmental toxicity, silane‐based compounds are expensive and barely scalable. In this sense, silicone‐based chemistry may match the gap as a real alternative. However, the grafting approaches demonstrated so far suffered from either slow binding kinetics or are applied under harsh conditions. Here, it is demonstrated that polydimethylsiloxanes graft to virtually any substrate when illuminated by UV light serving simultaneously as a reducing surface energy agent and infusing lubricant. This procedure is applied on metals, metal oxides, and ceramics of various surface morphologies. The proposed approach is simple, fast, scalable, environmentally friendly, and of low‐cost, yet forms stable lubricant‐infused slippery surfaces by a one‐pot process. Due to the biocompatibility of silicone‐based compounds, the process is examined on plain medically applicable substrates such as scalpel blades and glass lenses that display enhanced corrosion resistance, reduced friction through incision, and repel blood staining and bacterial adhesion without deteriorating their mechanical and optical characteristics.

Macrophage-like Cells Are Responsive to Titania Nanotube Intertube Spacing—An In Vitro Study

“…The morphology of the samples was evaluated by scanning electron microscope (SEM, FE-SEM 4800SEM, Hitachi, Japan). The contact-angle measurements were performed by a contact angle measurement system (DSA100, Kruss, Germany), as described previously [ 109 ].…”

Fog Harvesting Devices Inspired from Single to Multiple Creatures: Current Progress and Future Perspective

“…Based on the above-mentioned strategy, a great amount of SLIPSs was constructed for efficient fog harvesting. [98] Overviewing the FHDs based on SLIPS, the durability of the immersed lubricating oil was still an unavoidable problem and the fog harvesting efficiency of the lubricated surface would decrease with the loss of lubricating oil. Apart from this, the fluorinated lubricating oil was also easy to contaminate the collected water.…”

“…Based on the above‐mentioned strategy, a great amount of SLIPSs was constructed for efficient fog harvesting. [ 98 ]…”

Anodic TiO2 Nanotubes: Tailoring Osteoinduction via Drug Delivery

“…It is common knowledge nowadays that the adsorption of proteins, as well as cell adhesion on implantable surfaces, depend strongly on its structure and topography. In this sense, the electrochemical anodization of implantable Ti substrates induces the following surface modification: (i) it forms a layer of TiO 2 material, which is intrinsically hydrophilic, and (ii) introduces micro and/or nano roughness to strengthen the hydrophilicity of the implantable surface [9,111,135,136]-a typical example of contact angles for Ti, as-grown NTs and NTs annealed at different temperature is shown in Figure 8a [111]. Here, the fine-tuning of surface wettability can be achieved by either development of particular surface roughness or surface modification with low-energy materials.…”

“…Here, the fine-tuning of surface wettability can be achieved by either development of particular surface roughness or surface modification with low-energy materials. This is because one step is normally required to alter the hydrophilic surface to a hydrophobic one, i.e., by the deposition of low surface energy material (as exemplified in Figure 8b,c, whereby the deposition of polydimethylsiloxane, PDMS, using a ultraviolet (UV) light grafting technique turns hydrophilic TiO 2 NTs into hydrophobic [136]). The latter was obtained by various surface modification techniques as discussed in recent reviews or the literature [136][137][138].…”