Materials Literature
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We investigate the interaction between conjugated polyelectrolytes and surfactants in solution and solid phases. We identify multiple modes of interaction and propose a model that accounts for their interplay and pronounced variation in photophysics over a wide range of conditions.
A ceramic coating was formed on the titanium alloy by microarc oxidation in an electrolyte containing nano-Fe 2 O 3 , emulsifier OP-10 and sodium phosphate. The composition, surface and cross-sectional morphology and the element compositions of the coatings were characterised by X-ray diffraction, scanning electron mi…
Abstract Calcium nitrate (Ca(NO 3 ) 2 ) was used as the plasticizer to improve the properties of Poly(vinyl alcohol) (PVA). The interaction between Ca(NO 3 ) 2 and PVA was investigated by Fourier transform infrared (FTIR) spectroscopy. The influence of Ca(NO 3 ) 2 on the crystalline, thermal, and mechanical properties…
In this paper we suggest and study a metamaterial composed of non-magnetic spherical particles, which according to both approximate analytical theory and exact simulations possesses an isotropic negative refractive index in the near-infrared frequency range. The effect of negative refraction has been confirmed by full…
Functional human insulin-Au nanodots (NDs) are synthesized for the in vivo imaging of insulin metabolism. Benefiting from its efficient red to near infrared fluorescence, deep tissue subcellular uptake of insulin-Au NDs can be clearly resolved through a least-invasive harmonic generation and two-photon fluorescence (T…
Porous tablets of crystalline calcium carbonate were formed upon sintering of a precursor powder of amorphous calcium carbonate (ACC) under compressive stress (20 MPa) at relatively low temperatures (120–400 °C), induced by pulsed direct currents. Infrared spectroscopy ascertained the amorphous nature of the precursor…
The well-controlled growth of carbon nanotubes (CNTs) at low temperature (< 1073 K) using non-iron group metal catalysts remains a challenge. Here, we report that CNTs can be grown at 773–1173 K over an atomic layer epitaxy (ALE) prepared copper catalyst (ALE-Cu/SiO2) using chemical vapour deposition in helium diluted…
The sintering behavior and mechanical properties of cubic boron nitride (cBN) composites, using the mixture of cBN–Ti3Al and cBN–Ti3Al-Al as the starting material respectively, were investigated under high pressure and high temperature (HPHT) conditions. The results show that the samples of cBN–Ti3Al-Al sintering syst…
A finite element (FE) model is developed to simulate the ballistic impact of a flat-faced cylindrical projectile onto a flexible plain woven fabric made from Kevlar. The geometric model of the fabric was made by an in-house CAD programme known as UniverWeave© on the specification of actual structural parameters of a f…
The influence of the molecular shape on the charge transport in the columnar mesophases of bi-centred crown ether based mesogens is studied. Even though a bent shaped bridging of two aromatic cores promotes the stability and the width of the columnar liquid crystal phase, the quality of the intra-columnar packing and…
Abstract Well defined nanostructured polymeric supramolecular assemblies are formed when an asymmetric perylenebisimide substituted with ethylhexyl chains on one end and functionalized with 3‐pentadecylphenol at the other termini ( PDP‐UPBI ) is complexed with poly(4‐vinylpyridine) (P4VP) via a non‐covalent specific i…
Nanostructured cadmium hydroxide (Cd(OH)2) thin films have been fabricated on glass substrates by the chemical bath deposition method and converted into cadmium oxide (CdO) films by heat treatments. Some of the films were studied as-grown and the others were annealed in air at 150, 300 and 450 °C. The effects of vario…
Abstract Talc and talc modified with trimethoxy(octadecyl)silane (O‐talc) were melt compounded with poly ( L ‐lactide) (PLA). The crystallization behavior, tensile properties, and impact strength of the PLA composites were examined before and after the incorporation of talc and O‐talc. The molecular weight of PLA in t…
Magnetic nanoparticles were the thermoseeds under an alternating magnetic field and can be used to produce highly localized hyperthermia effect on deep-seated tumor. Nevertheless, effective and precisive delivery of nanoparticles to the treatment-intended site remains a challenge. In this study, Fe3O4 nanoparticles we…
Graphene, consisted of a single layer of carbon atom in a two‐dimensional lattice, has superior electrical and physical properties that promise many exciting applications. In this study, graphenes were prepared from graphite powder by chemical method and their images were investigated by TEM and SEM. To develop high p…
BACKGROUND: Serine hydroxymethyltransferase (SHMT), a pyridoxal phosphate-dependent enzyme, plays a vital role in the de novo pyrimidine biosynthesis pathway in malaria parasites. Two genes have been identified in Plasmodium spp. encoding a cytosolic SHMT (cSHMT) and putative mitochondria SHMT (mSHMT), but their roles…
Abstract The influence of diblock copolymer addition on the tack properties of a polyacrylic triblock copolymer/tackifier system was investigated. For this purpose, poly(methyl methacrylate)‐ block ‐poly( n ‐butyl acrylate)‐ block ‐poly(methyl methacrylate) triblock copolymer (MAM) and a 1/1 blend with a diblock copol…
In the present report, we studied the effect of different parameters such as preparation methods, different types of modified clay and matrix flexibility on thermomechanical properties of flexible epoxy/clay nanocomposites. The unmodified clay (cloisite Na + ) was organically modified with decylamines having different…
We report the synthesis of gold nanotubes with variable wall thicknesses that is accomplished by the deposition of sacrificial hydrophobic polymer cores followed by gold shells within an anodic aluminum oxide template. We demonstrate that by varying polymer core hydrophobicity, the resulting gold shell thickness can b…
Abstract In this work, we undertook a comparative study of the dynamic dielectric analysis of two composites: natural‐fiber‐reinforced unsaturated polyester (NFRUP) and E‐glass‐mat‐reinforced unsaturated polyester (EGMRUP). In both composites, two common relaxation processes were identified, the first of which was the…