Materials Literature
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Abstract Mixed-metal Prussian-blue nanoparticles, FexNiy[Fe(CN)6]2·zH2O (x + y = 3, z = 8–12), were dispersed into n-butanol by hybrid surface modification with hexacyanoferrate(II) ions, [FeII(CN)6]4−, and n-hexylamines. In their transparent dispersion solutions, a systematic bathochromic shift of charge-transfer ban…
Abstract We have developed a new photoreduction process at room temperature for the graphene oxide nanosheet in order to increase its electrical conductivity, by illumination with UV light under H2. This process will be useful for photopatterning conductive areas on insulator graphene oxide.
Purpose The purpose of this paper is to present the results of a study on heat transfer through a textile assembly consisting of fabric and air layers based on a theoretical model capable of dealing with conductive, convective and radioactive heat transfer. Design/methodology/approach Quantificational results were giv…
Purpose The purpose of this paper is to study the effect of blending time, SiC content and fill ratio on the homogeneity of iron‐silicon carbide powder mixture, blended in double‐cone blender; to evaluate density, microstructure and micro hardness of laser sintered iron and iron‐SiC specimens; and study the feasibilit…
Materials with emission over the whole visible range (400–800 nm) have been obtained through incorporating single-colored CdTe nanocrystals (NCs) into a poly(p-phenylene vinylene) (PPV) precursor [the sulfonium polyelectrolyte precursor of PPV]. Firstly, the quantum yield (QY) of the PPV precursor was improved to ∼50%…
3-Hydroxypropionate (3HP) is an important compound in the chemical industry, and the polymerized 3HP can be used as a bioplastic. In this review, we focus on polyesters consisting of 3HP monomers, including the homopolyester poly(3-hydroxypropionate) and copolyesters poly(3-hydroxybutyrate-co-3-hydroxypropionate), pol…
Corrugated silicon nanocone (SiNC) arrays have been fabricated on a silicon wafer by two polystyrene-sphere-monolayer-masked etching steps in order to create high-performance antireflective coatings. The reflectance was reduced from above 35% to less than 0.7% in the range 400–1050 nm, and it remained below 0.5% at in…
We investigate a wafer scale tunnel junction fabrication method, where a plasma etched via through a dielectric layer covering bottom Al electrode defines the tunnel junction area. The ex-situ tunnel barrier is formed by oxidation of the bottom electrode in the junction area. Room temperature resistance mapping over a…
Sparse matter is characterized by regions with low electron density and its understanding calls for methods to accurately calculate both the van der Waals (vdW) interactions and other bonding. Here we present a first-principles density functional theory (DFT) study of a layered oxide (V2O5) bulk structure which shows…
Abstract The spin‐Hamiltonian parameters ( g factors g ‖ , g ⊥ and hyperfine structure constants 161 A ‖ , 161 A ⊥ , 163 A ‖ , 163 A ⊥ ) for 161 Dy 3+ and 161 Dy 3+ isotopes in the trigonal 12‐fold coordinated La 3+ site of La 2 Mg 3 (NO 3 ) 12 ·24H 2 O crystal are calculated from a diagonalization (of energy matrix)…
Abstract The morphology of gold nanoparticles was controlled with hydrogentetrachloroaurate (HAuCl 4 ) and xylitol through a hydrothermal process using xylitol as reducing agent and controlled reagent. The molar ratio of xylitol relative to HAuCl 4 , reaction time and temperature played important roles in determining…
Abstract Silicon ester dispersants were prepared using transesterification between ethyl petroleum silicate and the alkyl alcohols by different molecular masses. The dispersants were used to modify calcium carbonate (CaCO 3 ), and their effect on the mechanical properties of CaCO 3 /polyethylene (PE) composites was in…
Physical modeling with numerical simulation is very useful for researchers to understand and improve the plasma-enhanced chemical vapor deposition process for coating of diamond-like carbon (DLC) films. In this paper, we implement a fluid model including a chemical reaction mechanism for methane plasmas. Employing a f…
Abstract Poly(phthalazinone ether sulfone ketone) (PPESK) is a novel kind of soluble thermoplastic resin with excellent thermal resistance properties. In this article, PPESK nonwoven fabrics were successfully prepared using electrospinning technique, and the influence of collecting velocity on fibers orientation, morp…
Abstract The grafting of ADPEA onto natural rubber was executed with UV radiation. Benzoyl peroxide was used to initiate the free‐radical grafting copolymerization. Natural rubber‐ graft ‐ N ‐(4‐aminodiphenylether) acrylamide (NR‐ g ‐ADPEA) was characterized with an IR technique. The ultrasonic velocities of both long…
CO2-induced crystallization of isotactic polypropylene (iPP) by annealing had been studied using differential scanning calorimetry (DSC), wide-angle X-ray diffraction (WAXD) and small-angle X-ray scattering (SAXS). The iPP before annealed was in α-form and amorphous states. At lower temperatures by CO2 isothermal trea…
Abstract DFT results and the analysis of the energetic and structural landscape of the title complexes are reported. It is shown that the minima of the ground state potential energy surface occur at positions corresponding to tetragonally compressed structures of D 2 d symmetry, with rather distinct electronic stabili…
Nuclear power currently contributes some 20% of the electricity needs of the UK and is rising rapidly on the political agenda due to environmental and economic factors, and yet all but one of the UK's existing nuclear reactors is expected to close by 2023. The increasing emphasis towards nuclear power rests on securit…
Hydrogen molecules adsorption and storage in Sc coated Si@Al(12) cluster were investigated using density functional theory methods. Scandium atoms can bind strongly to the surfaces of Si@Al(12) due to the charge transfer between Sc and Si@Al(12), and do not suffer from clustering on the substrate. Si@Al(12) cluster co…
The reactivity of small anionic gold clusters (Au n −, n = 1−4) toward small organic molecules was investigated by Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR-MS). With trifluoroacetic acid (TFA) proton transfer, gold loss, and radiative association were observed. Sulfide−sulfide bond activatio…