Materials Literature
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Abstract The effect of montmorillonite (Cloisite 6A) on the bulk polymerization of styrene initiated by benzoyl peroxide (BPO) was studied by the dilatometric determination of the polymerization rates. The bulk polymerization rates increased as the montmorillonite input quantity increased. The effect became greater wh…
MCM-48 was synthesized using the microwave hydrothermal method. The material was characterized by means of powder XRD, NMR, sorption measurement, SEM and transmission electron microscopy (TEM). XRD, NMR confirm the topology of the silicate framework, TEM shows the periodicity and homogeneity of the MCM-48 frame struct…
The extended LEPS of O(2)-Cu single crystal plane systems is constructed by means of 5-MP (the 5-parameter Morse potential). Both the adsorption and dissociation of O(2) on Cu low-index surfaces are investigated with extended LEPS in detail. All critical characteristics of the system that we obtain, such as adsorption…
A new component of carbon nanotube (CNT) paste is explored with an attempt to develop a carbon nanotube field emitter backlight unit (CNT-FE BLU) fabricated by the screen-printing method. To reduce the residual organic binder materials on the surface of single-wall carbon nanotube (SWCNT), the P(MMA-co-BMA) random cop…
The finding that ordered mesostructured silica (OMS) matrixes can stabilize guest nanocrystals has transformed the preparation of advanced catalytic materials. Today, it is possible to tailor the materials in such a way that high loading of guest catalytic phases (CPs) may be achieved at different locations in the hos…
When high strength steels absorb hydrogen during corrosion of a sacrificial coating they can fail by a process termed hydrogen re-embrittlement. This paper compares the levels of re-embrittlement caused by coatings of electroplated cadmium and two possible alternative aluminium based coatings. Slow strain rate tests w…
Abstract Self‐assembled ordered structures composed of block copolymers are simulated by molecular dynamics under stress‐free conditions and under shear. We address several methodological points. The system must be allowed to adjust its size to accommodate natural periods of self‐assembled structures. In addition, the…
Abstract Four heterometallic complexes {Mg(H 2 O) 6 }[Cr 2 (μ‐OH) 2 ‐( nta ) 2 ] · 4 H 2 O ( I ), {Ca(H 2 O) 3 }[Cr 2 (μ‐OH) 2 ( nta ) 2 ] · 3 H 2 O ( II ), {Sr(H 2 O) 3 }[Cr 2 (μ‐OH) 2 ( nta ) 2 ] · 3 H 2 O ( III ) and {Ba(H 2 O) 3 ‐ dmso }[Cr 2 (μ‐OH) 2 ( nta ) 2 ] · 2 H 2 O ( IV ) containing dinuclear bis (μ‐hydrox…
The effect of the uptake of a low-molecular-weight amphiphilic diblock copolymer on the morphology of didodecyldimethylammonium bromide (DDAB) adsorbed layers on mica, the interactions between two coated surfaces, and the frictional properties of the boundary film have been studied using an atomic force microscope and…
We use molecular dynamics simulations to investigate the nucleation of calcite crystals on self-assembled monolayers. We show how the presence of bicarbonate ions adsorbed on the monolayer surface can both aid nucleation and control the orientation of the growth of the crystal. Using a simple model of the nucleation p…
Various morphology ZnO submicrorods and microrods have been fabricated onto glass substrates through chemical solution growth by the source of zinc acetate (Zn(CH 3 COO) 2 .2H 2 O) and hexamethylene tetraamine ((CH 2 ) 6 N 4 ). We discuss the influence of PH and the concentration of the solution on the shapes of the a…
We report a molecular dynamics study of a binary mixture consisting of a large (host) particle and a smaller (guest) particle whose radius is varied over a range. These simulations investigate the possible existence of a diffusion anomaly or levitation effect in dense fluids, previously seen for guest molecules diffus…
We present a differential theory for solving Maxwell equations in cylindrical coordinates, projecting them onto a Fourier-Bessel basis. Numerical calculations require the truncation of that basis, so that correct rules of factorization have to be used. The convergence of the method is studied for different cases of di…
Abstract Ring‐opening polymerization of L(D)‐lactide was realized in the presence of poly(ethylene glycol) (PEG), yielding PLLA/PEG and PDLA/PEG block copolymers. Bioresorbable hydrogels were prepared from aqueous solutions containing both copolymers due to interactions and stereocomplexation between PLLA and PDLA blo…
The synthesis, characterization, and various photophysical properties of axially substituted tetrapyrazinotetraazaporphyrinatotitanium(IV) oxide (Pyz(4)TAPTiO) (1), tetrapyrazinotetraazaporphyrinatovanadium(IV) oxide (Pyz(4)TAPVO) (2), tetrapyrazinotetraazaporphyrinatozirconium(IV) dihydroxide [Pyz(4)TAPZr(OH)(2)] (3)…
Mitomycin-C loaded and chitosan-coated alginate microspheres were prepared for use in chemoembolization studies. In this respect, first alginate microspheres were prepared by using a spraying method using an extrusion device with a small orifice and following suspension cross-linking in an oil phase. Chitosan-coating…
A monolayer of inorganic nanoparticles (NPs) was fabricated on a silicon wafer using a cage-shaped protein, ferritin, which can sequester several kinds of inorganic NP in their cavities. Ferritins were bound electrostatically in aqueous condition to the silicon wafer which was modified with aminosilane molecules. The…
Linear and nonlinear optical properties of Ge33As12Se55 pulsed-laser-deposited (PLD) films are presented. The effect of exposure on these films is investigated in some detail. The PLD films showed photobleaching as a result of exposure to 610-nm laser light. Degenerate four-wave mixing and Z-scan techniques were used…
A time-dependent gas-phase isovolumetric desorption technique has been used to evaluate the diffusive transport parameters of hydrogen isotopes in polycrystalline tungsten in the temperatures range 673 to 1073 K and driving pressures from 1.3 104 to 105 Pa. Experiments have been run with both protium and deuterium obt…
The polymorphism and anisotropy of electrical, dielectric, and thermophysical properties of “pure” and doped LiIO3 single crystals are studied. The hexagonal a-LiIO3 phase is a 1-D ionic conductor (along the c axis). The anisotropy of the ionic conductivity of the a-phase can be reduced by doping with transitive metal…