Materials Literature
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Spinel is a rugged ceramic transparent from ultraviolet to midwave infrared (0.18 – 5.5 μm) wavelengths. It has the best transmission from 4-5 μm among the competing materials ALON and sapphire with comparable mechanical properties. We have developed low absorption loss spinel as an exit window aperture for High Energ…
Abstract Cell opening characteristics dependent on the cell openers for the conventional formulation of a closed-cell polyurethane foam (PUF) was studied using 1-butanol and lithium salt of 12-hydroxystearic acid (Li-12HSA) as the reactive cell opening agents. While cell openining content of only 10.5 % was obtained f…
Chemically converted graphene (CCG), from a chemistry point of view, is a giant molecule with a unique two-dimensional (2D) configuration. The availability of CCG dispersion provides a range of scalable methods to assemble graphene-based materials but brings the challenge of understanding and control of the CCG morpho…
A single-step solid-state synthetic approach was developed for the synthesis of silicon-coated carbon nanotube (CNT) core/shell structures. This was achieved through laser-induced melting and evaporation of CNT-deposited Si substrates using a continuous wavelength CO2 laser. The synthesis location of the CNT/Si struct…
Due to their relative easy synthesis and commercial availability, nanovectors based on dendrimers and dendrons are among the most utilized non‐viral vectors for gene transfer. Concomitantly, recent advances in molecular simulations and computer architectures not only allow for accurate predictions of many structural,…
The studies presented in this report arise from collaborations in the framework of the COST action TD0802. We used both the spin label and the spin probe techniques in order to characterize the dendrimers and their interactions with biomolecules by means of a computer aided analysis of the electron paramagnetic resona…
En In this paper we use the method established by Day [1] to solve Truesdell’s problem rephrased for the torsion of elastic cylinders with microstructure.
A comparative study of the relative stability of subphthalocyanine metallosupramolecular capsules bearing different metals and ligands has been carried out by electrospray ionization quadrupole time-of-flight tandem mass spectrometry experiments. The results highlight the trends in the strength of metal-nitrogen bonds…
The inhibition efficacy of Eugenia Jambolana fruit peel (EJFP) extract on mild steel in 1N Hydrochloric acid with various exposure time (24 to 360hrs) and temperature (303 to 323K) are investigated by mass loss measurements. The value of inhibition efficiency is increased with increase of inhibitor concentration and r…
It is shown that the oscillator strengths and dipole moments of the transitions for one-particle states of charge carriers that originated in semiconductor quantum dots take on large values, significantly exceeding the typical values of the corresponding values for semiconductor materials. In the framework of the dipo…
Alloys with the compositions of Cu49-xZr45Al6Six (x = 0, 0.5, 1, 2, and 3, in atom percent) were prepared by sucking the melt into a water-cooled copper. The effects of Si additions on the glass-forming ability (GFA) and corrosion behaviors in 1 N hydrochloric acid (HCl), 3.5 mass% sodium chloride (NaCl), and 0.5 N su…
ABSTRACT In this study, we prepared poly(3,4‐ethylenedioxythiophene) (PEDOT) via the chemical oxidation of the 3,4‐ethylenedioxythiophene monomer in a system consisting of miscible binary organic solvents, that is, acetonitrile (CH3CN) and chloroform (CHCl3). This successful technique was then used to synthesize a pol…
ABSTRACT Hydrogel silver nanocomposites have been used in applications with excellent antibacterial performance. Acrylic acid (AA)/itaconic acid (IA) hydrogels silver nanocomposites were prepared and applied as a coating on a textile substrate. Hydrogel matrices were synthesized first by the polymerization of an AA/IA…
A sapphire substrate with a grooved stripe pattern along different radial directions was prepared to investigate the effects of stripe direction on the growth mode and threading dislocation (TD) behavior of GaN films. When the stripe direction is oriented parallel to [101̄0]sapphire, the GaN films have a triangular st…
Nontoxic Cu–In solution-processed CuInSe 2 absorber thin films and resultant photovoltaic cells have been investigated. Acetate-based Cu–In precursors having different Cu/In ratios of 0.8–1.2 were deposited by spin-coating and then selenized in Se atmosphere up to 550 °C. Single tetragonal CuInSe 2 phase was dominantl…
Poly(aminoester) dendrimers are particularly appealing for drug delivery due to their advantageous properties including biodegradability, potentially lower toxicity and possibility of diverse chemical conjugations. In the course of the COST Action TD0802, we have developed a novel strategy for the synthesis of poly(am…
Materials in which heat flows perpendicular to an electric current could lead to better devices for cooling electronics.
In this paper, a planar nine-way metamaterial power-combined amplifier implemented with microstrip grids, lumped capacitors and inductors, and power amplifiers is presented. The power-dividing/combining structure is a metamaterial lens composed of positive refractive index (PRI) material with right-handed unit cells a…
The band-edge potential and photocurrent density of N-face GaN were experimentally determined to be more negative and greater than those of Ga-face GaN, respectively, in this photoelectrochemical experiment. These results indicate that the N-face GaN could generate much more hydrogen than Ga-face GaN. Although the tim…
Recently, a very rich phase diagram has been obtained for an iron-based superconductor Ca${}_{4}$Al${}_{2}$O${}_{6}$Fe${}_{2}$(As${}_{1\ensuremath{-}x}$P${}_{x}$)${}_{2}$. It has been revealed that nodeless $(x\ensuremath{\sim}0)$ and nodal $(x=1)$ superconductivity are separated by an antiferromagnetic phase. Here we…