Metal-assisted chemical etching (MacEtch or MaCE) is a robust and versatile process that has been adopted to overcome the limits of conventional semiconductor wet and dry etching technologies.[1–4] The advantage of producing high aspect ratio microand nano-structures with this simple and low-cost process has attracted attention for improving not only the etch quality but also the performance in...

background and aims. er:yag laser irradiation has been claimed to improve the adhesive properties of dentin; therefore, it has been proposed as an alternative to acid etching. the aim of this in vitro study was to investigate the shear bond strength of an etch-and-rinse adhesive system to dentin surfaces following er:yag laser and/or phosphoric acid etching. materials and methods. the roots of ...

CNT-added surface treatment (CAST) is a newly developed technology that incorporates single-walled carbon nanotubes (SWCNTs) into metal through alternate current electrolysis using dispersion of SWCNTs in an alkaline aqueous solution. We apply this method to Al-plates and characterize their morphology components scanning electron microscopy (SEM), transmission (TEM), X-ray photoelectron spectro...

Slippery and sticky superoleophobic aluminum surfaces were fabricated by electrochemical etching anodizing methods. Collective structures of sub-micrometer-scale cubic-shaped formed high-purity in HCl. The etched specimens then anodized H 4 P 2 O 7 to form anodic alumina nanofibers (AANFs) on the cubic surface, resulting a hierarchical aluminum-alumina structure. As water/oil-repellent self-ass...

The velocity slip of a fluid at a wall is one of the most typical phenomena in microscale gas flows. This paper presents a flow analysis considering the velocity slip in a capacitive micro gas flow sensor based on pressure difference measurements along a microchannel. The tangential momentum accommodation coefficient (TMAC) measurements of a particular channel wall in planar microchannels will ...

The increase in the rate of hydrogen evolution (HE) on dissolving Mg surfaces with increasing anodic current density or potential, which is sometimes called the negative difference effect, has been the topic of much discussion in recent years. A review of the very recent contributions to this subject is given in this paper. Increased catalytic activity of the corrosion product layer, either fro...