HfN and VN thin films were deposited onto silicon and 4140 steel substrates with r.f. reactive magnetron sputtering by using Hf and V metallic targets with 4-inch diameter and 99.9% purity in argon/nitrogen atmosphere, applying a substrate temperature of 250°C and a pressure of 1.2 × 10-3...

Laser ablation has attracted special interest for the growth of thin films. It allows the formation of high quality layers and maintain stoichiometry in the films of even very complex elemental materials. In this work, high quality AgInSe2 (AIS) films were grown onto Si(100) substrates kept at...

Lead-free Bi0.5(Na0.4K0.6)0.5TiO3 films have been synthesized by a chemical solution deposition method and deposited on p-Si(111) substrate by spin coating. Powder of the precursor solution heated at 650°C was studied by infrared scattering spectroscopy. The structural characteristics and...

Single crystals of nonlinear optical material, L-arginine trifluoroacetate (abbreviated as LATF), were grown from an aqueous solution by the low temperature solution growth method. The cell parameters of the grown crystal were determined by the X-ray powder diffraction analysis. Atomic force...

A detailed study was carried out on a piece of land that had been struck by lightning during the violent rainstorm that raged over the Island of São Miguel (Azores Archipelago) in late October 2006. Temperature and gas measurements (CO<Subscript>2</Subscript>, CO, H<Subscript>2</Subscript>S and CH<Subscript>4</Subscript>) were performed in four study trenches,...</subscript></subscript></subscript>

Al1-xMgx with different concentrations of Mg was produced by spectroscopically technique from melting the ingredient in graphite crucibles sealed under vacuum in quartz ampoules. The samples have been characterized by X-ray studies and electrical measurements. A cubic phase of polycrystalline...

SEM observations and Vickers hardness tests were performed to identify the irradiation effects. γ-irradiation effect during the aging hardening process can be explained depending on the composition of the alloy and is used to derive quantitative information on the kinetics of the transformation...

We report electrical resistivity measurements of platinum and gold thin films over a range of film thickness d (1.3 ≤ d ≤ 11.7nm), together with associated measurements of the film morphological and crystallographic grain size. The resistivity results are compared to predictions of the...

This article presents the dynamic behaviour of a single effect two bed adsorption chiller employing adsorbent beds with various layers of loose grain configurations and silica gel particle sizes, which is based on the experimentally confirmed adsorption isotherms and kinetics data. Compared with...