Materials Literature
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Polycrystalline Cd thin films were evaporated in a vacuum onto glass substrates at Cd source temperature of 770 K. The as-deposited Cd films were subjected to a gradual heating at the rate of 5 K/min, up to a temperature of 650 K and were then maintained at this temperature for 5 min. Then, the respective samples were…
BACKGROUND: The purpose of this study was to investigate the in vitro and in vivo characteristics of a new tumor-targeted nanosized delivery carrier for antisense oligonucleotide (ASON). METHODS: Polyethylenimine (PEI) was used to condense ASON to form nanosized complexes (PEI/ASON), which were then modified using asp…
In modern medicine human mesenchymal stem cells are becoming increasingly important. However, a successful cultivation of this type of cells is only possible under very specific conditions. Of great importance, for instance, are the absence of contaminants such as foreign microbiological organisms, i.e., sterility, an…
Currently polymer materials have been widely used in the distribution and transmission as electrical insulators such as epoxy resin. Several advantages of using epoxy resin as an insulating material are its low density, better dielectric properties, and epoxy resin has higher volume resistivity than that of the glass…
The effect of cerium concentration on single crystal lutetium orthosilicate (Lu2SiO5, LSO) was investigated with temperature-dependent steady state and time resolved luminescence spectroscopy. The results were used to determine the thermal quenching activation energies and the phonon energies responsible for the therm…
Abstract An outstanding approach for the tailoring of material properties is the grain refinement by the application of very high strains with changing strain path. Methods of severe plastic deformation (SPD) can create ultrafine‐grained or nanostructured metallic materials with new combinations of physical and mechan…
We constructed the experimental system with a laser Doppler vibrometer (LDV) for measuring the vibration of a single microbubble. It was demonstrated that the system enabled the capture of the vibration with an amplitude of nanometer order. We attempted to experimentally measure the resonant characteristics of a bubbl…
Polyaniline (PANI) and polyaniline composites with aluminium oxide (Al2O3) were prepared using the in situ polymerization method. The composites were then blended with acrylic paint and applied to carbon steel panels. The coated steel panels were evaluated for corrosion using the immersion test technique. The results…
The current T-tube divertor design consists of modular helium cooled units. The individual units consist of a steel inner cartridge enclosed in a tungsten alloy outer structure. On top of the outer tube is a layer of pure tungsten armor. Past design and analysis of the T-tube divertor concept has shown that it can acc…
With its industrial adaptability, graphene-on-silicon (GOS), formed by ultrahigh-vacuum annealing of a SiC thin film on a silicon substrate, is attracting recent attention. Little is known, however, about the growth mechanism of GOS. We demonstrate in this paper that temperature-programmed-desorption spectroscopy of d…
Preparation of highly uniform graphene with superior electrical properties is one of the key issues in graphene researches. The use of hydrazine vapor for reducing the graphene oxide (GO) has attracted considerable attention in recent year due to the simplicity, reproduciblilty and availibility of one-step procedure.…
This paper presents a research in tunable metamaterial (MM) absorber. We design an original split ring resonator (SRR) absorber, in first. Then through adding different group micro-gaps and increasing the number of micro-gaps, we investigate the change of different structures. We find the micro-gaps with a larger a, w…
1 H NMR and optical microscopy have been used to study four solutes dissolved in samples of a binary mixture of 4-n-hexyloxy-4′-cyanobiphenyl (6OCB) and 4-n-octyloxy-4′-cyanobiphenyl (8OCB) that are close to the region of the phase diagram where the smectic-A (SmA) and re-entrant nematic (RN) phases exist. Optical mic…
The temperature dependent resistivity of the iron-based superconductor NdFeAsO 0.88 F 0.12 was measured under different applied fields and excitation currents. The Arrhenius plot shows an anomalous tail effect, which contains two obvious stages of decreasing resistivity. The first is caused by the normal superconducti…
A novel zeroth-order resonator antenna based on the resonant-type metamaterial transmission line is proposed. For improvement of radiation efficiency, a koch-shaped complementary single split ring resonator is introduced to realize the resonant-type metamaterial transmission line. The equivalent circuit model is appli…
This paper emphasizes the primitive study of flame synthesis of carbon nanotube using camphor and its characterization. Flame of camphor was deposited on a conical cap of the chamber through a condensation process, and it was collected from the mid portion of the cap after 6 h, at room temperature 25°C. The collected…
The mechanical properties of ultrafine grained (UFG) zirconium (grain size 200 nm) obtained by a combination of extrusion, drawing, and annealing, are studied experimentally under uniaxial compression at temperatures of 4.2–300 K and compared with the mechanical properties of coarse grained (CG) Zr. The evolution of t…
In display applications, each displays technique needs different phosphors according to its applications. So, in this paper, nano-sized red emitting CaTiO3:Pr3+ powder phosphors were prepared by solvothermal reaction method. The phase purity and the structure of the phosphors were characterized by X-ray diffraction (X…
A new type of polyurethane (PU) has been synthesized by using hydroxyl terminated liquid natural rubber (HTNR) and poly(e-caprolactone) (PCL) as a soft segment and toluene-2,4 diisocyanate (TDI) as a hard segment. This PU becomes a biodegradable and recyclable polymer. The PU samples were synthesized by solution polym…
A study on the effect of secondary electron emission, which strongly affects the detection of extreme-UV radiation, was performed on diamond detectors. Two different structures were compared: interdigitated contacts and a transverse Schottky diode configuration. Both devices were electrically characterized by I-V meas…