Materials Literature
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There has recently been a surge of interest in the luminescence of lanthanide (Ln3+) ions doped in fluoride nanoparticles due to their potential for use in a number of diverse fields. Due to their remarkable optical properties, efforts are underway to investigate these nanoparticles for biotechnological applications,…
This paper reports a two-component system in which molecular recognition rapidly leads to the formation of a homogeneous fibrillar gel that, over a period of hours, aggregates via fibre-fibre interactions to yield microcrystals--providing insight into the relationship between nanoscale gels and microscale crystals.
The synthesis of fluorescent water-soluble gold nanoparticles by the reduction of a gold salt in the presence of a designed polymer ligand is described, the size and fluorescence of the particles being controlled by the polymer to gold ratio; the most fluorescent nanomaterial has a 3% quantum yield, a 1.1 nm gold core…
and co-doped phosphors have been prepared at under a reduced atmosphere, and their luminescence properties have also been investigated by tuning the concentration of activators. White light-emitting phosphors excited with UV or violet light could be obtained in and coactivated phosphors by adjusting contents appropria…
Polymethyl methacrylate (PMMA)‐BN nanotube (BNNT) composites were fabricated and their mechanical and thermal properties were analyzed. Using a 1 wt.% BNNTs fraction in a polymer, the elastic modulus of PMMA was increased up to 19%. In addition, thermal stability and glass transition temperature of PMMA were also posi…
Ultrasensitive surface-enhanced Raman scattering signals of four typical analytes were observed on Ag nanoparticles from beta-silver vanadate and copper, even though the concentrations of these analytes were as low as 1 x 10(-16) M (Rhodamine 6G or crystal violet) and 1 x 10(-15) M (trinitrotoluene or bovine serum alb…
Molecular simulations were performed to investigate the origin of the strong repulsive force acting on a protein as the protein approaches an oligo (ethylene glycol) self-assembled monolayer (OEG-SAM) surface. Since the repulsive force is mainly generated from water molecules, the force from the water molecules near t…
Few studies have described aquatic organisms interacting with manufactured nanoparticles. One key factor in determining these materials potential toxicity is the extent to which these particles accumulate in tissues. This may be most important for aquatic organisms as they contact large quantities of water through the…
Highly active Au catalysts with a dumbbell-like heterostructure for CO oxidation were prepared through colloidal deposition method; both activities and stabilities were investigated under different experimental conditions.
The functionalization of a pre-formed, high oxidation state {CeIV MnIV 6} cluster with a lacunary phosphotungstate, [alpha-P2 W15 O 56]12-, exemplifies a straightforward route for grafting redox-active building blocks to existing Mn-carboxylate clusters and modeling their deposition onto metal oxide surfaces.
A series of first (PG 1) and second generation (PG 2) dendronized polymers were synthesized which exhibit fast and sharp phase transitions with negligible hystereses in aqueous solutions and apparent lower critical solution temperatures (LCSTs) in the range of 33-49 degrees C.
Past decades have witnessed rapidly growing interest in nanometer-sized structures, which have great potential to be used in a variety of applications, such as electronics, sensors, coatings, and biomaterials. Supramolecular chemistry in particular has been actively applied to the development of such materials. Nanost…
An improvement in the mechanical properties of a biomedical Ni-free Co-Cr-Mo alloy under as-cast condition has been examined by means of tensile tests and microstructure observations. The solubility of N in Co-Cr-Mo alloys increases with increasing Cr content from 29 to 34 mass%. This results in a significant improvem…
Silks have been proposed as potential scaffold materials for tissue engineering, mainly because of their physical properties. They are stable at physiological temperatures, flexible and resist tensile and compressive forces. Bombyx mori (silkworm) cocoon silk has been used as a suture material for over a century, and…
The stability of the solid oxide fuel cell (SOFC) cathode material Ba 0.5 Sr 0.5 Co 0.8 Fe 0.2 O 3 − δ in C O 2 -containing atmospheres ( 4 × 10 − 4 ⩽ p C O 2 ∕ bar ⩽ 5 × 10 − 2 ) is investigated by precision thermogravimetry (TG) and mass spectrometry (MS) as a function of temperature ( 20 ⩽ T ∕ ° C ⩽ 950 ) . The des…
The synergistic influences of the concentration and electrolyte conductivity on the redox behavior of for nickel oxide-coated graphite electrodes are clearly demonstrated by voltammetric and impedance analyses. The increase in the concentration and electrolyte conductivity effectively promote the utilization of active…
Composites formed by infiltration of 45 wt % La0.3 Sr 0.7 Ti O3 (LST) into 65% porous yttria-stabilized zirconia (YSZ) were examined for application as solid oxide fuel cell (SOFC) anodes. Although LST does not react with YSZ, the structure of the LST deposits was strongly affected by the calcination temperature. At 1…
The basic properties of $\pi$-electrons near the Fermi level in graphene are reviewed from a point of view of the pseudospin and a gauge field coupling to the pseudospin. The applications of the gauge field to the electron-phonon interaction and to the edge states are reported.
In this work we analyze the relation between the multiplicative decomposition F = F e F p of the deformation gradient as a product of the elastic and plastic factors and the theory of uniform materials. We prove that postulating such a decomposition is equivalent to having a uniform material model with two configurati…
New, halogen-bonded mesogens are formed as trimeric complexes of two molecules of alkoxystilbazole and one of 1,4-diiodotetrafluorobenzene. The pure complexes show only monotropic nematic phases, while mixtures show a enantiotropic nematic with a range of up to 11 °C. A possible correlation between nematic phase stabi…