in this study, silver nanoparticles were synthesized by chemical reduction method at different concentrations of ag colloid in the range of 500-16000 ppm. nanoparticles were deposited by spin coating method on pre-etched glass and si substrates. structural, optical and electrical properties of the samples were studied using scanning electron microscopy equipped with edax, uv-vis spectrophotomet...

The effect of different mechanical and chemical pre-treatments on the adhesion strength of hydroxyapatite (HAp) coating on a commercially pure titanium (CP-Ti) substrate was studied by means of a standard tensile test followed by microscopic and chemical analysis to determine the locus of fracture. In addition, the effects of either these pre-treatments or post-treatment by low-energy electron ...

In present study the effect of different pre-frying temperatures in sunflower oil on physical and chemical characteristics of silver carp fish nuggets (Hypophthalmichthys molitrix) were studied. After prepared, the fish nuggets were pre-fried in sunflower oil heated to 150, 170 and 190°C. The measurements included: the proximate composition (protein, moisture, fat and ash), physical experiments...

The interior surfaces of pre-assembled poly(dimethylsiloxane) (PDMS) microfluidic devices were modified with a cross-linked fluoropolymer barrier coating that significantly increased the chemical compatibility of the devices.

Abstract In this study, an in situ three-point bending test was carried out to study the mechanical properties and cracking behavior of Cr-coated Zr-4 alloy considering effect pre-oxidation. The results showed that high temperature pre-oxidation led formation intermetallic ZrCr2 at coating/substrate interface α-Zr(O) layer beneath interface. During test, Cr coating substrate good plastic deform...

The fully-leaky guided wave technique has been used to study the reflective 90 ̊ MTN liquid crystal cell used for LCOS. The cell is comprised of upper substrate with indium-tin-oxide coating and lower substrate with aluminum coating. Reflective angle-dependent signals (Rss, Rpp, Rsp and Rps) were recorded over a range of angles of incidence with the cell under application of 0 7 Vrms ac electric...

PURPOSE Although several surface treatments have been recently investigated both under in vitro and in vivo conditions, controversy still exists regarding the selection of the most appropriate zirconia surface pre-treatment. The purpose of this study was to evaluate the effect of alumina (Al) and aluminium nitride (AlN) coating on the shear bond strength of adhesive resin cement to zirconia cor...

The competition between transverse surface and sub-surface cracks in a thin, hard coating bonded to polycarbonate substrate due to spherical indentation is investigated in real-time as a function of coating thickness and indenter radius. Fine grain (Y-TZP) and medium grain (alumina) ceramics and pre-abraded amorphous glass are used for the coating. As the coating thickness is reduced, the famil...