Superhydrophobic Properties Of Silver Coated Copper

One-step fabrication process of superhydrophobic green coatings

“…3) The leaf-like surface (fractal structure) morphology ( Fig. 3(a)) of the films (composed of micro-nano patterned) prepared without benzoic acid which is in resemblance to our previously reported structures [18].…”

“…These films, for their superhydrophobic properties obtained using biocompatible ingredients might be termed "superhydrophobic green silver coating". We have previously reported the rolling off of water drops on fractal-structured silver surfaces by two-step processes using stearic acid molecules for passivation [18]. Also, Gu et al, have recently reported extreme-hydrophobicity of Ag on Cu surfaces by galvanic exchange reactions [35].…”

“…Creation of certain micro-nanoroughness as a first step promotes the entrapment of air in the spacings between the rough features; and lowering the surface energy as a second subsequent step helps reduce the affinity of water drops with the low energy surface thereby weakening the water-surface interaction. We have, in the last two years fabricated several superhydrophobic surfaces using diverse methods, via two-step processes, which demonstrated water rolling-off properties [12], [17], [18], [19], [20] and [21]. In those works, methods such as chemical bath deposition (CBD), improving the corrosion resistance properties of these alloys [22].…”

“…Similarly, metals such as silver, which can be easily deposited, for example on copper surfaces, via galvanic reactions [18] or phenomenon also known as cementation processes [25] and [26], are used as an antibacterial material in bio-medicine [27] and [28]. Therefore, use of such biocompatible materials as ingredients in making superhydrophobic surfaces will provide a new pathway to making antibacterial, non-toxic and environmentally friendly superhydrophobic surfaces for which reason; such surfaces might be termed "superhydrophobic green coating".…”

Wetting and superhydrophobic properties of PECVD grown hydrocarbon and fluorinated-hydrocarbon coatings

“…In recent years, our group has been extensively working on the superhydrophobic coatings for its applications in the areas where reduction of ice adhesion is of importance [13], [14], [15], [16], [17], [18] and [19]. The above works are fundamentally based on two step process where initially a rough pattern was created and the rough surface either passivated with fluoroalkylsilane [17] or stearic acid molecules [13], [17], [18] and [19] or coated with rf-sputtered Teflon [15]. Very recently, we have demonstrated that rf-sputtered Teflon coated etched aluminum surfaces are highly superhydrophobic [15].…”