Materials Literature
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From the viewpoint of the porous Si (PS) application as an antireflection coating (ARC) in crystalline Si solar cells, a comparative study has been made on the morphological, kinetic, and optical properties of both chemically and electrochemically etched PS. These results are correlated and interpreted in terms of a s…
A simple method of preparing luminescent cadmium sulfide nanoparticles passivated with the biological molecule adenosine triphosphate (ATP) is reported. The biological molecule ATP is used as a materials chemistry synthon rather than a biological entity and its interaction with a semiconductor quantum dot surface is i…
Non-toxic foul-release provides an environmentally friendly and sustainable technical solution to control micro- and/or macrofouling on ships' hulls. Silicone-based coatings have been used for foul-release at high or moderate ship speeds (> 15 knots). To remove the fouling from slower ships (< 15 knots), the macrofoul…
Mechanical properties of an AZ31 Mg alloy with the grain sizes of 4, 12, 60 and 450 μm were investigated by tensile tests at 473–673 K with 1.7×10−5–1.7×10−1 s−1. The Mg alloy exhibited unique behaviors of low elongation of 17% at 473 K with 1.7×10−1 s−1 for the specimen with the grain size of 450 μm and large elongat…
A C60-centered dendritic adduct with 12 symmetrically attached pyrene species was synthesized and found to have relatively simple fluorescence emission kinetics, in particular, the mono-exponential decay of the significant pyrene excimer emission.
Polymer waveguides have a potential of achieving the economic requirement for low priced optical devices and of applying novel active devices. The developments of the polymer waveguide materials and their applications have been investigated since 1990s. The remarkable progress on the polymer waveguides is expected to…
A group of chiral nematic multipedal materials based on pentaerythritol containing two types of mesogenic sub-units were synthesised. The presence of different types of mesogens, the topology of the attachment to the core (end-on and side-on) and the chemical nature of the linking connection to the PE scaffold (ether,…
The low-temperature heat capacity of hercynite (FeAl 2 O 4 ) was measured between 3 and 400 K, and thermochemical functions were derived from the results. The measured heat-capacity curve shows a small lambda-shaped anomaly peaking at around 13 K. From our data, we suggest a standard entropy for hercynite at 298.15 K…
Oxygen-plasma treatment of tin-doped indium oxide (ITO) films electrodes was found to affect the electron-transfer kinetics of tris(2,2 ′ -bipyridyl) ruthenium(II) chloride [ Ru ( bpy ) 3 2 + / 3 + ] and ferrocyanide [ Fe ( CN ) 6 4 − / 3 − ] , especially when fast scan rates were used for interrogation. Plasma treatm…
En faisant appel à la notion de mesure de Palm, nous établissons l'existence de la mesure de diffraction pour tout processus ponctuel stationnaire et ergodique. Nous obtenons des caractérisations précises de ces mesures dans le cas de processus particuliers : sous-ensembles aléatoires de <mml:math xmlns:mml="http://ww…
Biomineralization describes the deposition of mineral within or outside the cells of living organisms. Examples include iron and gold deposits in bacteria and other unicellular organisms, silicates in algae and diatoms, carbonates in diatoms and nonvertebrates, and calcium phosphates and carbonates in vertebrates. The…
In this study, both air-oxygen-helium and air-helium atmospheric pressure plasma treatments were employed to desize PVA on a rayon (viscose) fabric. Both the plasma treatments were able to remove some of the PVA on the rayon fabric and increase PVA solubility in cold water, resulting in a higher weight loss in cold wa…
Configurational lattice energy techniques are used to investigate oxygen vacancy ordering and the order–disorder transition in SrFeO2.50. Vacancy disorder is shown to present many new challenges, largely due to the extensive relaxation in such grossly non-stoichiometric systems. With large supercells it is not feasibl…
The preparation, crystal structure and physical properties of beta-(BDA-TTP)2GaCl4 has been investigated; the salt exhibits superconductivity at 3.1 K (onset) under a hydrostatic pressure of 7.6 kbar.
The adsorption of quaternized poly-2-vinyl pyridine (PVP+), which has a fixed charge per monomer, onto a gold electrode was investigated using reflectometry. The double layer charge and potential of the gold substrate were controlled by means of either the solution pH or by applying an external potential. The adsorpti…
Adhesion promoting monomers for dental metals, 5-(4-vinylbenzyl)-2-thiobarbituric acid (5VS), 6- (4-vinylbenzyl-n-propyl) amino-1,3,5-triazine-2,4-dithione (VBATDT) and 9,10-epithiodecyl methacrylate (EP8MA), were synthesized and surface treatment agents were prepared by dissolving each monomer in ethanol or acetone.…
The particle properties and solid-state characteristics of two celluloses, Avicel PH101 and cellulose obtained from the alga Cladophora sp., were evaluated and related to the compaction behavior and the properties of the tablets made from them. The surface area of the celluloses was measured at different levels of pen…
The objective of this study was to investigate the effect of the crystallization behavior of Macrogol 6000 (polyethylene glycol 6000; PEG 6000), used as a binder, during the solidification process on the properties of mononucleic granules prepared by the fluidized hot-melt granulation (FHMG) technique. Crystallization…
A single carboxylate picket bismuth porphyrin has been characterised in the solid state as the first instance of a non-dimeric structure; the carboxylate picket, bent over the macrocycle, is coordinated to the bismuth, inducing a significant distortion of the porphyrin core.
The reaction of [Ni(bpca)2] (1) and [Fe(H2O)6](ClO4)2 gave a trinuclear complex 3, five 1-D chain complexes 4a–e, and a 2-D honeycomb complex 5. The selective syntheses of these complexes were achieved by controlling the reaction conditions such as reaction stoichiometry, solvents, and the presence/absence of supporti…