Materials Literature
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Recently, machining has been exploited as a means for producing ultra-fine grained (UFG) and nanocrystalline microstructures for various metal materials, such as aluminum alloys, copper, stainless steel, titanium and nickel-based super alloys, etc. However, no predictive, analytical or numerical work has ever been pre…
Herein, we demonstrate that both qualitative molecular and quantitative elemental data obtained from size exclusion chromatography coupled online for the first time to both molecular fluorescence and elemental mass spectrometry, respectively, turned out to be critical to evaluate the quality of coatings of quantum dot…
Diamond-like Carbon (DLC) film has the ability to change the refractive index (n) value achieved high transmittance for potential applications of antireflection coating. The DLC films were coated onto D263T glass substrates at room temperature by radio frequency (RF) magnetron sputtering method. From the results of UV…
The 1H-Benzimidazolium Hydrogen L-Tartrate Dihydrate (BT) was synthesized using benzimidazole and L-tartaric acid and grown as single crystal by slow evaporation solution growth technique at room temperature (RT) using double-distilled water as a solvent. The crystal system has been confirmed from the single crystal X…
High-speed steel (HSS) tools are the most commonly used tools in small and medium-scale industry. So far, a few studies have been carried out pertaining to the life of HSS single point cutting tool. Studies on cryogenically treated (CT) cutting tools show microstructural changes in the material that can influence the…
We report on the synthesis and evaluation of a new class of low molar mass chiral metallomesogens containing cholesterol based N-(n-alkyl)salicylideneamines coordinated in a bidentate fashion that exhibit monotropic chiral nematic (N*) and smectic A* (SmA*) phases. Copper complex with a wide range of N* phase metallom…
The wetting behavior of spherical nanoparticles at a vapor-liquid interface is investigated by using density functional theory, and the line tension calculation method is modified by analyzing the total energy of the vapor-liquid-particle equilibrium. Compared with the direct measurement data from simulation, the resu…
Chelating amphiphiles with N, N′-ethylene diamine tetraacetic acid (EDTA) conjugated via an ester bond to one or two oleyl chain/s (EDTA-MO and EDTA-BO) have been found to be capable of chelating a variety of metal ions including paramagnetic metal ions such as Manganese (Mn) and Gadolinium (Gd). Thermal behavior and…
Supramolecular complexes consisting of anionic polyoxometalate (POM) and chiral, cationic lipids are newly developed. They give nanofibers, helical ribbons, and nanotapes in organic media depending on the chemical structure of lipid molecules. Lipid ammonium groups exert significant influence on their photoreduction c…
The use of natural fibers as reinforcement for thermoplastics has generated much interest due to the low cost, low density, high specific properties characteristics. In this work the mechanical properties of high density polyethylene/ textile fibers residues composites were studied. Effect of pretreatment with sulfuri…
A microscopic theory of the Raman scattering based on the local bond-polarizability model is presented and applied to the analysis of phonon confinement in porous silicon and porous germanium, as well as nanowire structures. Within the linear response approximation, the Raman shift intensity is calculated by means of…
The factors limiting the relaxivity (r) of MRI contrast agents based on small (∼2.0 nm) gold nanoparticles functionalised with paramagnetic chelates were explored using EPR spectroscopy. The EPR analysis suggested that nanoparticle-attached chelates exhibit relatively high tumbling rates which restrict their relaxivit…
In thermoelectric generation applications, the two indispensable conditions are the hot source and the cold source to provide the temperature difference for the generator. Thus, the waste heat recovery from various high temperature gas or steam turbines on ships by thermoelectric generators (TEG) is promising because…
We use computer simulations to test a simple idea for mapping between long-time self diffusivities obtained from molecular and Brownian dynamics. The strategy we explore is motivated by the behavior of fluids comprising particles that interact via inverse-power-law pair potentials, which serve as good reference models…
The objective of this study was to develop an efficient and stable drug delivery nanocarrier based on a dually functionalized hyaluronic acid (HA) derivative which could be used as a long circulating drug delivery vehicle. Self-assembled HA nanoparticles (HA NPs) were prepared by attaching pyrene to the HA backbone an…
Platinum nanoparticles supported on boron-doped single-crystalline diamond surfaces were used as a model system to investigate the catalytic activity with respect to the influence of particle morphology, particle density and surface preparation of the diamond substrates. We report on the preparation, characterization…
X-ray Photoelectron Spectroscopy (XPS), Atomic Force Microscopy (AFM) and Time of Flight Secondary Ion Mass Spectrometry (TOF-SIMS) were applied to characterize two series of silicon nitride surfaces, modified either with (3-aminopropyl)triethoxysilane (APTES) or (3-glycidoxypropyl)trimethoxysilane (GOPS), prior to an…
The mineral schafarzikite, FeSb2O4 (space groupP42/mbc), has been synthesised and antimony substituted by lead to form a series of compounds of formulation FeSb2−xPbxO4 (x = 0.2–0.7). The replacement of Sb3+ by Pb2+ induces oxidation of Fe2+ to Fe3+ with a concomitant decrease in the a- and increase in the c-lattice p…
The influence of temperature and procedure on the phase relationships of La x Ba 1−x CoO 3−δ with 0 ≤ x ≤ 1.0, oxygen nonstoichiometry, thermal and chemical expansion contributions, in air, and the electrochemical response of electrodes formed by three porous layers La x Ba 1−x CoO 3−δ / (50:50wt%)La x Ba 1−x CoO 3−δ…
Nanotubular materials have many favorable properties for drug delivery. We present here a pioneering study of controlled release of a model drug, amoxicillin, from the internal nanopore structure of self-ordered, periodically spaced-apart aluminum oxide with an innovative, nanotubular geometry. This aluminum oxide nan…