Materials Literature
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The paper presents traditional analogue and digital techniques in partial discharge measurement. The discharge current pulses are measured from high voltage machines like power plant generators and transformers. The presented modern digital techniques are suitable for all measurements where impulse energy will be calc…
Carbon nanotubes (CNTs) have become strongly promising nano-particles for developing novel smart polymer matrix nanocomposites to satisfy the ever increasing design requirements of the recent avenues of space industry and other special structural applications. The objective of this paper is to investigate the influenc…
Periodic nanoring arrays are prepared by self-assembled poly styrene-block-polymethylmethacrylate (PS-b-PMMA) diblock copolymer under rapid solvent-annealing. The dimension of the nanorings can be modified by controlling the solvent-annealing time.
An electrolyte, N , N ′ -1,4-diethyl, triethylene, and diamine tetrafluoroborate dissolved in glutaronitrile, was developed and investigated in a symmetrical supercapacitor using activated carbon as electrodes (active carbon ∣ active carbon). The electrochemical performance of the simulated supercapacitor was examined…
Life models relate the time to failure to the applied stress. They can be derived starting from knowledge of chemical/physical phenomena involved in the ageing process caused by the stress or by means of regressive techniques on data acquired in ALT-based procedure. Anyway, experimental tests are needed. This paper de…
The Epsilon-Near-Zero (ENZ) super-tunneling structure with weakly coupled cascaded ultra-narrow channels is proposed and demonstrated to have notably wider bandwidth than single stage tunneling structure. An extensive parametric study for such structures is performed to investigate the factors which can afiect super-t…
A novel trimethyl lock based dual enzyme-responsive gold nanoparticles (AuNPs) conjugate was developed to control the self-assembly and disassembly of AuNPs in one population of nanoparticles, which can be easily monitored by naked eye, simple spectrophotometer and surface enhanced Raman scattering (SERS) measurements.
Random blinking is a major problem on the way to successful applications of semiconducting nanocrystals in optoelectronics and photonics, which until recently had neither a practical solution nor a theoretical interpretation. An experimental breakthrough has recently been made by fabricating non-blinking Cd(1-x)Zn(x)S…
In an effort to explain the selective Goss abnormal grain growth in Fe-3%Si steel based on the sub-boundary enhanced solid-state wetting, we investigated why sub-boundaries are formed exclusively in Goss grains after primary recrystallization. In order for Goss grains to have sub-boundaries exclusively, they should un…
We examine the possibility of detecting the chemical bond overlap plasmon (CBOP) of the hydrogen molecule by electron inelastic scattering. The CBOP has been predicted to efficiently absorb and scatter electromagnetic radiation above the molecular ionization threshold in the cases of alkali halides. For the hydrogen m…
This study is a comparison of gamma ray linear attenuation coefficient of two typs of shielding materials made of Saudi white and red sand. Each shield was consisted of one part of cement two parts of sand in addi-tion to water. Different thicknesses were tested. The concentrations of all elements in each shield mater…
A methodology is proposed to estimate the piezoelectric coefficients of bulk piezoelectric materials using simple capacitance measurements. The extracted values of d33 and d31 from the capacitance measurements were 506 pC/N and 247 pC/N, respectively. The d33 value is in agreement with that obtained from the Berlincou…
Polymer films of polyvinyl alcohol (PVA) containing CdSe quantum dots of various sizes from 3 nm to 5 nm have been synthesised by the radiation-chemical route using CdSO4 and Na2SeSO3 as the starting materials under a reducing condition. 2 MeV electron beam from an electron accelerator and the gamma radiation from a c…
Titanium alloys are receiving a big attention for biomedical applications. Recently, b type titanium alloys composed of non-toxic elements are being developed for these applications. The aim of this paper is to study mechanical properties and deformation mechanisms of three beta titanium alloys designed with similar v…
OBJECTIVE: To visualize tumor angiogenesis using the MRI contrast agent, Gd-DTPA-anti-VEGF receptor 2 antibody conjugate, with a 4.7-Tesla MRI instrument in a mouse model. MATERIALS AND METHODS: We designed a tumor angiogenesis-targeting T1 contrast agent that was prepared by the bioconjugation of gadolinium diethylen…
Aminopolycarboxylate (APC) ligands have been selected to prepare seven new heterobimetallic barium-cobalt complexes as molecular precursors for BaCoO3-δ oxide materials. The use of APC = nitrilotriacetate (nta3−), ethylenediaminetetraacetate (edta4−), cyclohexane-1,2-diaminetetraacetate (cdta4−) and diethylenetriamine…
A simple freeze-smashing method is described to produce water-dispersible single-walled carbon nanotubes (SWCNTs). This is based on freezing SWCNTs in ice and then smashing it in a crusher. After the smashing process, SWCNTs are found to be dispersible in water without any addition of dispersant and destruction of the…
An intergranular corrosion is a main degradation mechanism of austenitic stainless steels for use in a nuclear fuel reprocessing plant. The intergranular corrosion is caused by the segregation of impurities to grain boundaries and the resultant formation of active sites. Extra High Purity (EHP) austenitic stainless st…
nanostructured thin films were prepared by electrochemical anodization of zirconium films deposited by sputtering on silicon substrate. The influence of the electrolyte composition upon morphology of the nanostructured oxide was studied. The structure and the morphology of zirconium films (before and after anodization…
The combination of fluorescent and magnetic properties in single nanosystems is of current interest for applications in the biomedical and biological sciences, including drug delivery, and cell separation and labelling procedures. These nanocomposite particles are generally synthesised using high-temperature procedure…