Materials Literature
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Structural biology, homology modelling and rational drug design require accurate three-dimensional macromolecular coordinates. However, the coordinates in the Protein Data Bank (PDB) have not all been obtained using the latest experimental and computational methods. In this study a method is presented for automated re…
Using charged films of colloidal CdSe/CdS core/shell quantum dots of approximately 3.5 to 4.5 nm core diameters and 0.6 to 1.2 nm thick CdS shells, the radiative and nonradiative decay of the negatively charged exciton, the trion T-, are measured. The T- radiative rate is faster than the exciton by a factor of 2.2 +/-…
Experimental conditions that mimic likely scenarios of manufactured nanomaterials (MNs) introduction to aquatic systems were used to assessthe effect of nanoparticle dispersion/solubility and water chemical composition on MN-toxicity. Aqueous suspensions of fullerenes (C60), nanosilver (nAg), and nanocopper (nCu) were…
Kenaf (Hibiscus cannabinus) nanofibers were isolated from unbleached and bleached pulp by a combination of chemical and mechanical treatments. The chemical methods were based on NaOH-AQ (anthraquinone) and three-stage bleaching (DEpD) processes, whereas the mechanical techniques involved refining, cryo-crushing, and h…
Platinum nanocubes and nanopolyhedra with tunable size from 5 to 9 nm were synthesized by controlling the reducing rate of metal precursor ions in a one-pot polyol synthesis. A two-stage process is proposed for the simultaneous control of size and shape. In the first stage, the oxidation state of the metal ion precurs…
Graphene nanosheets produced in the form of stable aqueous dispersions by chemical reduction of graphene oxide and deposited onto graphite substrates have been investigated by atomic force and scanning tunneling microscopy (AFM/STM). The chemically reduced graphene oxide nanosheets were hardly distinguishable from the…
Transparent polymer interlayer foils are widely used to increase the safety of glass applications, mainly in construction and automotive industry. In case one or more glass sheets in a laminate fracture, the remaining structural capacity (i.e. stiffness and strength) highly depends on the solicitation and mechanical p…
Transparent polymer interlayer foils are widely used to increase the safety of glass applications, mainly in construction and automotive industry. In case one or more glass sheets in a laminate fracture, the remaining structural capacity (i.e. stiffness and strength) highly depends on the solicitation and mechanical p…
Corrosion behavior of aluminum, steel, and cast iron in aqueous-glycolic solutions containing 5 to 50 vol % was studied both in the absence of contact and in aluminum-steel, aluminum-cast iron, steel-cast iron, and aluminum-steel-cast iron contact systems.
The magnesium alloy AZ31 was processed by severe hot rolling and annealing. This processing was optimised to produce recrystallised grain sizes as small as 2.2μm. Specimens in the as-rolled condition had a grain size of 0.5μm, and exhibited a yield strength in excess of 350MPa. In the fully recrystallised condition, w…
We have studied tetragonal scheelite-like solid solutions in the ternary system Na 2 MoO 4 -CaMoO 4 -Ce 2/3 MoO 4 : Na 0.7 Ca y Ce 1.1 − 2 y /3 (MoO 4 ) 2 (0 ≤ y ≤ 0.6) and Na 0.3 Ca z Ce 1.23− 2 z /3 (MoO 4 ) 2 (0 ≤ z ≤ 1.4). The solid solutions melt congruently at temperatures from 1100 to 1200°C. Their lattice para…
The US Department of Energy has selected two projects for continuation within its Solid State Energy Conversion Alliance (SECA) Program research portfolio. The projects – led by FuelCell Energy, in partnership with Versa Power Systems, and Siemens Energy – have successfully demonstrated solid oxide fuel cells designed…
In spite of die castings being amongst the highest volume items manufactured by the metalworking industry, the influence of high pressure die casting (HPDC) process parameters on greenhouse gas (GHG) emissions remains largely unreported. In this article, the authors discuss the effect of some HPDC process parameters o…
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The anisotropic magnetic properties of the metallic layered compound with hexagonal crystal structure 2H-NbSe2 are investigated as a function of their dependence on high-energy electron irradiation. Pauli paramagnetism of free electrons is shown to dominate the magnetic susceptibility, P. The anisotropy is related to…
Wide attention has been given to the heterojunction Semiconductor-Insulator-Semiconductor S-I-S solar cells which present the same performances as the Metal-Insulator- Semiconductor M-I-S heteroj unctions. In the former, the top semiconductor is a transparent degenerated semiconductor thin film. Among the various tran…
A novel approach has been described for the synthesis of zinc oxide nanoparticles by a very simple reaction of zinc metal with ethanol at 100oC. The diameters of the nano-particles range from 50–100nm. The reaction involves the cleavage of C-O bond of the alcohol, which occurs readily on zinc metal surface. Addition o…
The structure, mechanical and magnetic properties have been studied for Fe-Cr-Co-based hard magnetic alloys with W and Ga additives, subjected by the quenching and post-deformation hardening. The alloys combine the properties of the hard magnetic material with outstanding mechanical strength and plasticity. Using X-ra…
Differential thermal (DTA) and X-ray phase (XPA) analyses are used to study the ternary mutual system of Li, Ca//SO 4 , MoO 4 . Boundaries of crystallizing phases are determined. Compositions of the saddle and two invariant ternary eutectic points that melt at 709, 538, and 680 °C, as well as heats of phase transition…
Single-phase powders of manganites (La 0.65 Sr 0.35 ) 0.8 Mn 1.2 O 3 ± Δ with average crystallite sizes of 30, 50, and 500 nm were produced by co-precipitation. The samples studied were obtained by cold isostatic pressing of powders at a pressure of 1 GPa without subsequent sintering. It is shown that the size of part…