background: based on contradictory findings concerning the use of lasers for enamel etching, the purpose of this study was to investigate the shear bond strength of teeth prepared for bonding with er-yag laser etching and compare them with phosphoric acid etching. materials and methods: in this in vitro study forty – eight premolars, extracted for orthodontic purposes were randomly divided in t...

The spontaneous triggering of cerium-based conversion coating deposition occurs due to active micro-galvanic couple induced local rise in pH at cathodic sites. Since surface preparations prior treatment modify the reactivity or extent coupling between anodic and phases, they are crucial importance. While many past works have studied effect various including alkaline etching and/or acid pickling...

Abstract Adhesion of bacteria and platelets on blood-contact implants surgical devices is one the causes infections thrombus. A superhydrophobic surface serving as a protective layer can minimize adhesion contamination due to low energy. The objective this paper construct titanium implant by combination topological structure chemical coating. First, micro/nano hierarchical morphology obtained s...

background: electrochemical methods, as one of the advanced oxidation processes (aops), have recently been applied to remove different contaminants from water and wastewater. this study compares the performance of anodic oxidation (ao) and electro-fenton (ef) methods on waste sludge treatment. methods: this experimental study was performed on real sludge and the effect of operating parameters s...

Porous silicon (PSi) is used as an effective material in biomedicine, sensors, solar cells, electrochemical energy, microelectronics, and nanotechnology. Considering the dependence of PSi functional properties on pore geometry porous layer architecture, it important to develop methods for controlled formation. After all, “procession” method obtaining ⟶ architecture PSi, decisive role belongs fi...

This paper reports the formation of self-organized nanoporous gallium oxide by anodization of solid gallium metal. Because of its low melting point (ca. 30 °C), metallic gallium can be shaped into flexible structures, permitting the fabrication of nanoporous anodic oxide monoliths within confined spaces like the inside of a microchannel. Here, solid gallium films prepared on planar substrates w...

In this paper, a facile method was proposed to load CeO2 nanoparticles (NPs) on anodic TiO2 nanotube (NT) arrays, which leads to a formation of CeO2/TiO2 heterojunctions. Highly ordered anatase phase TiO2 NT arrays were fabricated by using anodic oxidation method, then these individual TiO2 NTs were used as tiny "nano-containers" to load a small amount of Ce(NO3)3 solutions. The loaded anodic T...

Abstract Porous anodic aluminum oxide membranes were fabricated via two-step anodization of in 0.3 M H 2 C O 4 , SO and 0.17 3 PO solutions. The parameters the film such as: pore diameter (D p ), interpore distance c porosity (P) density (ρ) can be completely controlled by operating conditions anodization. Additionally, diameters a chemical treatment (pore opening/widening process). effect anod...

We have presented a method to prepare a uniform anodic nanoporous oxide film on the surface of a cylindrical zircaloy (Zr) tube. The distribution of the electric field around the Zr tube determines the distribution of the thickness of the anodic nanoporous oxide film. The electric field generated when a cylindrical Zr tube is electrochemically anodized was simulated by using commercial code COM...