超疏水

Abstract(#br)Superhydrophobic surfaces based on ZnO–PDMS nanocomposite coatings are demonstrated by a simple, facile, time-saving, wet chemical route. ZnO nanopowders with average particle size of 14\u003cce:hsp sp=\"0.25\"/\u003enm were synthesized by a low temperature solution combustion method. Powder X-ray diffraction results confirm that the nanopowders exhibit hexagonal wurtzite structure and belong to space group P 63 mc .

Abstract(#br)Herein, we report a facile and low cost method for the fabrication of superhydrophobic surface via spin coating the mixture of polydimethylsiloxane precursor (PDMS) and silicon dioxide (SiO 2 ) nanoparticles. The surface hydrophobicity can be well tuned by adjusting the weight percent of PDMS and SiO 2 .

Abstract(#br)Superhydrophobic and oleophobic polydimethylsiloxane (PDMS)–silica nanocomposite double layer coating was fabricated by applying a thin layer of low surface energy fluoroalkyl silane (FAS) as topcoat. The coatings exhibited WCA of 158–160° and stable oleophobic property with oil CA of 79°. The surface morphology was characterized by field emission scanning electron microscopy (FESEM) and surface chemical composition was determined by energy dispersive X-ray spectrometery (EDX) and X-ray photoelectron spectroscopy (XPS).

Abstract(#br)Superhydrophobic membranes with nanostructure for membrane distillation are fabricated via spraying a mixture of polydimethylsiloxane (PDMS) and hydrophobic SiO 2 nanoparticles on poly (vinylidene fluoride) (PVDF) flat sheet membranes.

Abstract(#br)A novel and facile avenue was developed to successfully fabricate a regular hierarchical surface structure on a copper sheet via the combination of polydimethylsiloxane (PDMS) template and chemical etching method in this paper. The as-prepared hierarchical surface structure was comprised of uniform-sized microprotrusions and nanostructures which was similar to the natural lotus leaf. After modified by stearic acid, the surface was covered with a layer of hydrophobic chemical groups and became superhydrophobic.

Abstract(#br)We report the development of magnetic nanocomposite sheets with superhydrophobic and supeoleophilic surfaces generated by laser ablation. Polydimethylsiloxane elastomer free-standing films, loaded homogeneously with 2% wt. carbon coated iron nanoparticles, were ablated by UV (248\u003cce:hsp sp=\"0.25\"/\u003enm), nanosecond laser pulses. The laser irradiation induces chemical and structural changes (both in micro- and nano-scale) to the surfaces of the nanocomposites rendering them superhydrophobic.

Abstract(#br)A method employing one kind of material both for the construction of rough morphology and the chemical modification is called self-modification by us, which has not been reported in fabricating superhydrophobic surfaces so far. In this paper, taking candle soot as an intermediate, we created rough, superhydrophilic and transparent surfaces on glass trough calcination of polydimethylsiloxane (PDMS) at 550\u003cce:hsp sp=\"0.25\"/\u003e°C.

Abstract(#br)We reported a novel, simple, modification-free process for the preparation of transparent superhydrophobic surfaces by calcining candle-soot-coated polydimethylsiloxane (PDMS) films. Though a calcination process, a candle soot template was gradually removed while robust fibrous and network structures were created on glass. Owing to these structures, the glass substrates were durable and highly transparent with an average transmittance (400–800\u003cce:hsp sp=\"0.25\"/\u003enm) of 89.50%, very closed to the bare glass slides (89.70%).

Abstract(#br)In this paper, we demonstrated a simple micro-ball lens array (MBLA) fabrication method using a drop-on-demand (DOD) droplet printing technique and liquid mold. The micro-ball droplet array on the hydrophobic surface is used as the liquid mold to fabricate the MBLA.

Abstract(#br)Four polydimethylsiloxane (PDMS) coatings with different surface free energies have been prepared and applied to smooth and roughened aluminum plates to form hydrophobic and superhydrophobic surfaces. Their surface wettability in terms of water contact angle (CA), sliding angle (SA) and water droplet impact dynamics was studied under an ambient (50% relative humidity, RH at 25\u003cce:hsp sp=\"0.25\"/\u003e°C) and three different condensing environments (low, highly and extremely condensing, i.e. 30%, 60% and 90% RH at −10\u003cce:hsp sp=\"0.25\"/\u003e°C).