Abstract Alternative to the traditional analog methods, several digital data preprocessing, shaping and postprocessing techniques have been investigated for improvement in energy resolution of dispersive x-rays detectors. Initial experimental results show that by preprocessing data, better can be obtained at shorter times; thus, it will allow good time high count rates.

The origins of distinctive compositional dependence of relative permittivity, 計r, in the Pb-free piezoelectric system (1-x)Na0.5K0.5NbO3-xLiTaO3, x≤ 10 mol% modified with BiScO3 have been revealed using transmission electron microscopy with energy dispersive X-ray analysis (TEM-EDX). As the LiTaO3 content increased the Curie peak at ~370°C in 計r –T plots became more diffuse, and at x= 5 mol% an...

The aim of the paper is based on a combined approach to improve dental alloy performance using new Ni-free Co–Cr composition with Mo, Nb and Zr coated an anodic oxidation film. uncoated samples were surface characterized by performing SEM (scanning electronic microscopy), XRD (X-rays diffraction) contact angle measurements corrosion studies open circuit potential, potentiodynamic polarization E...

Nano-structured copper oxides were successfully prepared through direct calcination of 1D ladderlike metal-organic framework [Cu2(btec)(2,2'-bipy)2]∞, (btec = 1,2,4,5-benzenetetracarboxylate and 2,2'-bipy = 2,2'-bipyridine) and porous coordination polymer [Cu(BDC)(bipy)](BDCH2), (BDC = 1,4-benzenedicarboxylate; bipy = 4,4'-bipyridine). The nano-structure of the as-synthesized samples are charac...

Catalyst-free growth of boron carbide nanowires is achieved by pyrolysis of diborane and methane at 650–750 -C and around 500 mTorr in a quartz tube furnace. Electron-diffraction analysis using a novel diffraction-scanning transmission electron microscopy (D-STEM) technique indicates that the crystalline nanowires are single-crystal orthorhombic boron carbide. TEM images show that the nanowires...

The present study investigated the role of alloy microstructure and surface roughness on wear and friction behavior of leaded and unleaded tin bronzes. Ball-on-disk experiments were carried out under dry conditions with steel balls sliding against bronze disks. Scanning electron microscopy (SEM), energy dispersive electron microscopy (EDX), x-ray photoelectron spectroscopy (XPS) and Auger elect...

Recently, a great deal of attention has been paid to the fabrication of highly ordered nanowire arrays because of their fundamental importance and potential applications. We fabricated CdS:Mn2+:Cu+ nano and microwires and PbTe and PbSe nanowires and microtubes using electrochemical deposition and template method. The morphology of nanowires and microtubes was observed by scanning electron micro...

We present a comparative study where carbon nanostructures were prepared by electron and ion beam methods. The deposited thin films were analysed by Raman analysis, nanoindentation, Energy dispersive X-ray analysis (EDX) and atomic force microscopy (AFM). In most conditions, the material formed is hydrogenated amorphous carbon. This study was used to form sharp AFM supertip structures which wer...