We demonstrate the fabrication of 2-D arrays of nanopillars made from perfluoropolyether derivatives using a porous anodic aluminum oxide membrane as a template. Pretexturing the aluminum prior to anodization enables one to engineer multiple morphological length scales and thereby synthesize a lotus-leaf-like topography. Both nanopillars on a flat surface and on a lotus-leaf-like topology exhib...

Porous silicon (PS) can be used as a loading template in sensing or matrix to develop nanoparticle arrays. We present comprehensive study of PS morphology and optical properties before after the pore opening process, including determination thickness, size, density layers, its surface wettability, reflectivity. The samples were fabricated by electrochemical anodization monocrystalline wafer 5–2...

Abstract This study introduced an electrochemical process for the formation of a biofunctional oxide layer on almost equiatomic NiTi alloy surface. The core technology used in proposed was anodization HNO3 electrolyte under pulsed voltage, which allowed poreless Ni-free TiO2 with thickness ~50 nm that exhibited hydrophilicity and corrosion protection. acquired led to enhanced endothelial cell a...

Thick ZnO/ZnAl2O4 coatings were synthesized on zinc alloy Z1 substrates through plasma electrolytic oxidation (PEO) for different anodization times. The prepared characterized by scanning SEM, XRD, diffuse reflectance and photoluminescence spectroscopy in order to establish the relationship between their structural optical properties PEO processing parameters. Under conditions (anodization time...

Porous alumina masks are fabricated by anodization of aluminum films grown on both semiconducting and insulating substrates. For these self-assembled alumina masks, pore diameters and periodicities within the ranges of 10–130 and 20–200 nm, respectively, can be controlled by varying anodization conditions. 20 nm periodicities correspond to pore densities in excess of 1012 per square inch, close...

Nanoporous alumina which was produced by a conventional direct current anodization [DCA] process at low temperatures has received much attention in various applications such as nanomaterial synthesis, sensors, and photonics. In this article, we employed a newly developed hybrid pulse anodization [HPA] method to fabricate the nanoporous alumina on a flat and curved surface of an aluminum [Al] fo...

Tungsten trioxide (WO₃) possesses a small band gap energy of 2.4-2.8 eV and is responsive to both ultraviolet and visible light irradiation including strong absorption of the solar spectrum and stable physicochemical properties. Thus, controlled growth of one-dimensional (1D) WO₃ nanotubular structures with desired length, diameter, and wall thickness has gained significant interest. In the pre...

Anodization of Al foil under low voltages of 1-10 V was conducted to obtain porous anodic aluminas (PAAs) with ultrasmall nanopores. Regular nanopore arrays with pore diameter 6-10 nm were realized in four different electrolytes under 0-30°C according to the AFM, FESEM, TEM images and current evolution curves. It is found that the pore diameter and interpore distance, as well as the barrier lay...

Anodic Aluminum Oxide (AAO) is widely employed as a template for fabrication of nanowires and nanotubes due to its ability to generate self organized (SO), well ordered pore structures. We have developed a new aluminum pre-patterning technique to create well ordered nanopore arrays on thin films deposited on silicon substrates. We form patterns of thicker oxide on the surface via local oxidatio...

The Cover Feature illustrates the set-up of a closed bipolar cell for anodization titanium foils towards TiO2 nanotube layers. By using this kind set-up, two sides foil can be anodized simultaneously in different electrolytes. layers with identical or dimensions thus formed on both foil. More information found Communication by H. Sopha et al.