Materials Literature
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In the paper, the equilibrium molecular dynamics and Buckingham potential function are used to investigate the thermal conductivity of TiO2/ZnO nano-film interface along to [0001](z-axis). The effects of the equilibrium temperature, the thickness and the cross section of the nano-film interface on the thermal conducti…
Through connecting magnetic resonators and coplanar short metallic wires together, a two dimensional left-handed metamaterial based on single sided metallic structure was proposed. Theoretical analysis and simulated results indicated that this construction exhibited negative effective permittivity and permeability sim…
PbO-Bi 2O3-B2O3 glasses containing different concentrations of FeO have been prepared. The glasses are characterized by XRD and differential thermal analysis. The results of these studies have been analyzed in the light of different oxidation states of iron with the aid of the data on IR, ESR, optical absorption and m…
Polycarbonate (PC) films were activated using cyclonic atmospheric pressure plasma. The experimentally measured gas phase temperature was from 30 to 95 °C, demonstrating that this cyclonic atmospheric pressure plasma can treat heat-sensitive polymeric materials at the low temperatures. The surface hydrophilicity chang…
Abstract—This paper presents a novel pyramidal (EH) horn antenna based on Electromagnetic Band Gap structures (EBGs). The reported pyramidal woodpile-based horn antenna possesses a symmetrical radiation pattern and a wide operating frequency range. Such antennas can substitute metallic horns in certain circumstances,…
Purpose: Effects of magnesium additions to Al alloy with 2% Ti addition on the microstructure, phase morphology and distribution and mechanical properties were investigated. Here are presented mainly microstructure changes after solution heat treatment concerning mainly grain uniformity and intermetallic phases of the…
A methodology for electromagnetic simulation of initially charged structure with a discharge source (ICSWDS) has been investigated. The ICSWDS can be applied to a lot of areas such as high power electromagnetic (HPEM) radiators. As a method of electromagnetically simulating the ICSWDS, converting initially charged str…
We report molecular dynamics simulation results for the collective dynamical properties of supercooled bulk water at 180 K at three different densities, corresponding to different phases whose coexistence has recently been discovered in the supercooled regime. In this study, we focus on the behaviour of the longitudin…
We report on the visible and near-infrared luminescence properties of Bi-doped sodium borosilicate glasses. The emission intensity at 420 nm due to the transition of Bi 3+ decreases with increasing B 2 O 3 concentration. Boron anomaly features were observed in both the visible emission at 618 nm due to the transition…
A novel route to achieve a narrowband free-space electromagnetic absorber in any range of the spectrum based on stacked subwavelength hole arrays is proposed. The absorption is obtained by means of a slow light mode inside a fishnet-like engineered structure and exploiting the unavoidable misalignments and bucklings o…
The capacitance in the classical approach is completely determined by the device geometry and a dielectric constant of the medium. However, the quantum effects will give significant impact on the device performance once the transistor approaches the size of nanoscale device and hence the quantum capacitance must be ta…
Arc discharge in liquid helium is a promising method for fabricating high-quality carbon nanomaterials. Measurements of the discharge characteristics of the resulting plasma and observation of the associated optical emission spectra show that the behaviour of discharge current over time and the associated spectra depe…
The frequency dependent conductivity and dielectric behavior of PANI/CdO polymer nanocomposites based on polyaniline/CdO with SDBSA have been studied. The formation of nanocomposites and changes in the structural and microstructural properties of the materials were investigated by X-ray diffraction (XRD), FTIR and SEM…
Biodegradable blend hydrogels based on carboxymethyl cellulose (CMC) and carboxymethyl starch (CMS) were prepared by the radiation-induced crosslinking. Properties of the crosslinked CMC/CMS blend hydrogels such as gel fraction, degree of swelling (Sw), gel strength, and biodegradability were investigated. The Sw of t…
High temperature proton conductors (HTPCs) based fuel cells directly fed with methane mixtures were investigated. Doped barium zirconate was chosen as electrolyte because of its good chemical stability in CO 2 and H 2 O containing atmosphere. The sintering temperature of doped barium zirconate was decreased down to 13…
Ti-SBA-15 mesoporous materials were directly synthesized via a hydrothermal process and characterized by using nitrogen adsorption-desorption measurements, X-ray diffraction, scanning electron microscopy, transmission electron microscopy, diffuse reflectance ultraviolet-visible spectroscopy, and infrared ray spectrosc…
Hydroxycarboxylic acids were converted to the corresponding carbonyl compounds under aerobic photo-oxidative conditions in the presence of FSM-16 under visible light irradiation by a fluorescent lamp. This synthetic protocol is the first example of FSM-16 functioning as a photocatalyst by visible light.
We report a useful acid-catalyzed crosslinking reaction which enables the direct photopatterning of POSS derivatives to form robust nanoporous matrices. Octakis(dimethylacetoxyethyl siloxy) POSS and octakis(dimethylacetoxypropyl siloxy) POSS were synthesized from commercially available octahydrido-POSS. Both the aceto…
Increasing demand for lighter final products has created new opportunities for the application of new light weight materials. Due to high strength to density ratio and good magnetic resistance properties, magnesium alloys are good candidates to replace steel and aluminum for same application. However, limited numbers…
Selection of a most appropriate material is a very important task in design process of every product. There is a need for simple, systematic, and logical methods or mathematical tools to guide decision makers in considering a number of selection attributes and their interrelations and in making right decisions. This p…