Materials Literature
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ABSTRACT The ablation behavior of polystyrene‐organically modified montmorillonite (OMMT) nanocomposites was evaluated by measuring the weight loss induced by KrF excimer laser irradiation of the nanocomposite specimens under air atmosphere. The characteristic values of ablation, ablation threshold fluence, and effect…
In this work we considered the factors determining the rate of adsorption. By assuming the balance between the surface reaction and diffusional mechanisms we discussed the possibility to conclude which model is the rate-controlling step. By using the pseudo first-order Lagergren equation we showed the theoretical inte…
Abstract The objective of this work is to validate predictive models for the simulation of the mechanical response of polypropylene undergoing impact situations. The transferability of material parameters deduced from a particular loading scenario (uniaxial loading) to a different loading situation (multiaxial loading…
Abstract Earlier studies have shown that poly(ethylene oxide) ( PEO ) and poly(methyl methacrylate) ( PMMA ) blocks are compatible at 270 and 298 K, and that their Flory–Huggins interaction parameters have the same blending ratio dependence at both temperatures. At a much higher temperature (400 K), the behavior of PE…
The first transmission electron microscope (TEM) was built in the 1930s for which the inventor Ernst Ruska received a Nobel prize for Physics in 1986. Since those early years, Mineralogy has played an important role in the development of TEM methods and technology. In the beginning, early specimens included natural sa…
The first transmission electron microscope (TEM) was built in the 1930s for which the inventor Ernst Ruska received a Nobel prize for Physics in 1986. Since those early years, Mineralogy has played an important role in the development of TEM methods and technology. In the beginning, early specimens included natural sa…
The first transmission electron microscope (TEM) was built in the 1930s for which the inventor Ernst Ruska received a Nobel prize for Physics in 1986. Since those early years, Mineralogy has played an important role in the development of TEM methods and technology. In the beginning, early specimens included natural sa…
We study the power-law scaling behavior and pinch-off morphology of two-dimensional bubble rafts under tension. As a function of pulling speed, we observe two distinct pinch-off morphologies that have been observed in other fluid systems: long threads (LT) and double-cone (DC). At any given pulling speed, there is a n…
Abstract Highly uniform hollow spheres were assembled from truncated rhomboid anatase TiO2 nanoparticles (HS), which were synthesized from the hydrothermal treatment of a NaF solution by using amorphous TiO2 spheres as a precursor and template. The submicron hollow spheres with highly photocatalytic active surfaces ex…
Two trigonal prismatic bicyclooxacalixarenes 1 and 2 were obtained by condensation reaction of 1,3,5-tri(p-hydroxyphenyl)benzene and 2,4,6-tri(p-hydroxyphenyl)triazine, respectively, with 1,5-difluoro-2,4-dinitrobenzene. Single crystal structural analysis revealed that the bicyclooxacalixarene 1 adopts a distorted tri…
An epoxy/CNT composite material with a low concentration of multiwall carbon nanotubes (0.5wt%) in a diglycidilether bisphenol-A based epoxy matrix has been shown to be applicable, when maintained at a constant temperature, as humidity sensing element. An almost linear decrease of the electrical conductivity with incr…
Crystalline mesoporous carbon was prepared from nanoshell-containing carbon (NSCC) by a sculpturing technique, i.e., the selective oxidation of amorphous carbon moieties (ACM) in NSCC using hydrogen peroxide (H2O2) treatment. The carbon structures of the NSCC and the H2O2-treated NSCC were characterized by transmissio…
We study the structures of the Hras‐GTP complex and the Hras‐GDP complex in water to investigate the mechanism of GTP hydrolysis of the Hras‐GTP complex. We performed molecular dynamics simulations of these complexes to investigate the structures of these complexes using the potential parameters of AMBER ff03 and our…
A novel graphene oxide-balofloxacin nanocomposite was synthesized, and the loading and release behavior of fluorescent antibacterial balofloxacin on graphene oxide was investigated. The surface morphologies of the nanocomposite were evaluated using transmission electron microscopy and fluorescence microscopy, and the…
A set of sodium silicate glass matrices were synthesized to study the influence of Na2O concentration on the optical properties of Eu3+. The samples were characterized by optical absorption (OA), time and energy resolved photoluminescence and Fourier Transform Infrared (FTIR). We observed that decreasing sodium oxide…
Abstract Ethylene‐vinyl acetate copolymer ( EVA )/poly(ϵ‐caprolactone) ( PCL ) blend (50/50 w/w) with co‐continuous morphology was prepared via melt mixing for fabricating microporous EVA membrane materials through selective solvent extraction. Shear flow and quiescent annealing techniques were employed to control co‐…
ABSTRACT An efficient and novel one‐pot process is developed to immobilize the atom transfer radical polymerization (ATRP) initiators onto the surface of fully pyrolyzed carbon hard spheres (CHSs) via a radical trapping process from the in situ thermal decomposition of bis(bromomethylbenzoyl)peroxide. The CHSs do not…
State-resolved laser techniques were used to study the internal state distributions of gas phase methyl radicals which are produced during the photooxidation of acetone on TiO2(110). This approach was used as a means of understanding the nature of the bimodal kinetic energy distributions for these radicals. Specifical…
This research is focused on using nitriding to enhance the wear resistance of austempered ductile iron (ADI), ductile iron (DI), and gray iron (GI). Three gas nitriding processes, namely "Gas nitriding + nitrogen cooled down to 800 o F" (Blue), "Gas nitriding + cooled down to 300 o F" (Gray), and "Gas nitriding + oil…
Sustainability aspects of nuclear power are analysed with regard to such environmental liabilities that are associated with decommissioning of nuclear facilities and with nuclear waste management. Sustainability is defi ned and evaluated based on information searches that also include energy from combustion of coal. I…