Materials Literature
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ZnO nanocrystalline films are prepared on Si substrates at different temperatures by using metal-organic chemical vapour deposition (MOCVD). It is observed that when the growth temperature is low, the stoichiometric ratio between Zn and O atoms has a large deviation from the ideal ratio of 1:1. The ZnO grains in the f…
Superparamagnetic nanoparticles of zinc ferrite (ZnFe2O4) were produced by a microwave induced combustion synthesis method. XRD, FT-IR, SEM, VSM and ESR were used for the structural, morphological, and magnetic investigation of the product, respectively. Average particle size of the nanoparticles was estimated by the…
Diluted magnetic semiconductors (DMSs), with the Curie temperature at room temperature, are of technological and fundamental importance. Defect engineering has been an effective way to introduce magnetic moments in various non-magnetic systems. Here we show firstly, InN film directly grown on (0001)-oriented Al2O3 sub…
A new continuum mechanics approach based on electrostructural elements is proposed which is capable of studying and predicting the piezoelectric as well as mechanical properties of nanostructures. To evaluate the capabilities of the proposed approach, several properties of zigzag boron nitride nanotubes (BNNTs) includ…
A fully coupled 3D energy-avaraged model is presented which describes the magnetomechanical behavior of Terfenol-D. Conventional energy averaging with eight easy axis orientations yields an unphysical kink in the magnetization response and fails to describe the gradual approach to saturation present in Terfenol-D magn…
Abstract Chitosan‐stabilized Fe 3 O 4 nanoparticles (Fe 3 O 4 –CHI NPs) are synthesized at room temperature in an aqueous medium and gold NPs are decorated on the surface of these nanoparticles by the deposition/precipitation method. The synthesis of Fe 3 O 4 /Au NPs is followed by biofunctionalization with lipoic aci…
The synthesis of one-step meso-porphyrins type A x B y containing alkyl and pyridyl groups is described. An initial assess of the amphiphilic proprieties were determined by its log K ow using fluorescence detection techniques and values from 1.42 to 2.15 were observed. The melting points of this set of porphyrins was…
A transparent gel was prepared using a hydrolytically active solution of zirconium, hafnium, and yttrium alkoxoacetylacetonates. This gel served to synthesize ultrafine zirconia-hafnia-yttria complex oxide. The product dispersity was studied as affected by the parameters of xerogel heat treatment. The thermal behavior…
Abstract The present occurrence is the only deposit among those found in Eskişehir province containing both sepiolite and palygorskite in economic amounts. To describe the geology, mineralogy and genetic relationships, two representative measured sections were examined by field work and XRD, XRF and SEM analyses. Sepi…
We investigated the potential of antibody-vectorialized superparamagnetic iron oxide (SPIO) particles as cellular specific magnetic resonance contrast agents to image lymphocyte populations within the central nervous system (CNS), with the final goal of obtaining a reliable tool for noninvasively detecting and trackin…
This study demonstrates the synthesis of nanostructured Si 3 N 4 /SiC composite powders from silica fume, for the first time. The processing approach to convert the waste silica fume to advanced nanocomposites is based on the integrated mechanical and thermal activation ( IMTA ) process. The synthesized nanostructured…
We introduce a modular design system, which we call the Central Asian modular design system (CAMS), that is based on the pre-Islamic Star and Cross pattern. It can be used to generate a large family of traditional Islamic patterns found in Central Asia and Iran. In other examples of Islamic modular systems, the module…
The mechanical behaviour of polylactic acid/flax fibre composite in tension was investigated by analysing elastic properties and loading curves. The observed non-linearity was attributed to microdamage, viscoelastic and viscoplastic response, suggesting Schapery’s type of model for viscoelasticilty and Zapas’ model fo…
In recent years, high throughput (HT) screening has become the most widely used approach for early phase salt screening and selection in a drug discovery/development setting. The purpose of this study was to compare a rational approach for salt screening and selection to those results previously generated using a HT a…
Nitrogen-vacancy defect color centers are created in a high purity single crystal diamond by nitrogen-ion implantation. Both optical spectrum and optically detected magnetic resonance are measured for these artificial quantum emitters. Moreover, with a suitable mask, a lattice composed of nitrogen-vacancy centers is f…
A systematic ${}^{59}$Co NMR study has been carried out at 4.2 K in a series of quaternary Co${}_{2}$FeAl${}_{1\ensuremath{-}x}$Si${}_{x}$ polycrystalline bulk Heusler alloys ($x$ = 0, 0.3, 0.5, 0.7, 1). It was shown that the effect of Si substitution consists in a significant modification of ${}^{59}$Co hyperfine fie…
Results of investigations of structural and phase transformations that occur in the titanium-nickelide-based alloy Ti 49.5 Ni 50.5 with a shape memory effect during severe plastic deformation by torsion under high pressure (HPT) are reported. The studies were performed using transmission and scanning electron microsco…
Microstructure of Ni 50-x Co x Mn 35.5 In 14.5 (x=0, 3, 5) melt-spun ribbons was investigated using scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The typical layered microstructure consisting of oriented columnar grains and colonies of fine equi-axed grains was observed in the cross se…
The occurrence of acoustic cavitation in the cleaning liquid is a crucial precondition for the performance of megasonic cleaning systems. Hence, a fundamental understanding of the impact of different parameters of the megasonic process on cavitation activity is necessary. A setup capable of synchronously measuring son…
The aim of this study was to investigate the effects of different types of weft yarn materials and washing treatments on the moisture management properties of denim fabrics. Fabrics were developed with five different types of weft yarns made of cotton, polyester, spun polypropylene, air-textured polypropylene and stuf…