Materials Literature
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The shear-induced microstructure in dilute colloid–polymer mixtures, where the presence of polymer induces a tuneable attractive interaction between the colloids, is investigated using quantitative confocal microscopy, over a wide parameter space including the shear rate, the polymer concentration, and two different p…
Kelvin
Simulations of energy absorbing structural components made of die cast magnesium alloy AM60B under axial crush and bending conditions require determination of accurate material parameters when using finite element (FE) analysis. This paper presents two optimisation-based methodologies to calibrate material parameters…
Octasubstituted lead(II) phthalocyanines containing alkylthio- and alkoxy- groups in peripheral positions have been synthesized and characterized using 1H and 13C NMR, UV-Vis, IR and mass spectroscopies as well as elemental analysis. The mesogenic properties of the octasubstituted lead(II) phthalocyanines have been in…
The effects of woven and non-woven kenaf fiber on mechanical properties of polyester composites were studied at different types of perform structures. Composite polyester reinforced kenaf fiber has been prepared via hand lay-up process by varying fiber forms into plain weave, twill and mats structure. The reinforcing…
Single crystals of barium oxalate have been grown using gel method at ambient temperature. Thermal characteristics and kinetic parameters of barium oxalate crystals were determined by thermo-gravimetric (TG) analysis under non-isothermal heating conditions. The pyrolysis experiments were performed with increasing temp…
We report on the characteristics of a new class of Si-based nanotubes and spherical nanoparticles synthesized by the dc-arc plasma method in a mixture of argon and hydrogen. These two nanostructures share common properties: they are hollow and possess very thin, highly polycrystalline and mainly oxidized walls. In par…
Silver nanorod arrays grew on the individual metallic silver particles after the thermal decomposition of the silver oxides. The formation of silver oxide came from the input of oxygen during sputtering. The subsequent growth of the Ag nanorods started from the single silver grain that originated from the decompositio…
Many rheological properties of concentrated suspensions of soft particles jammed together beyond the random close packing limit for hard-spheres are determined by the contacts between the particles and are computable from the short range value of the pair distribution function. It is a challenge to compute the structu…
Cellulose fibers obtained from the textile industry (lyocell) were investigated as a potential reinforcement for thermoset phenolic matrices, to improve their mechanical properties. Textile cotton fibers were also considered. The fibers were characterized in terms of their chemical composition and analyzed using TGA,…
Environmental scanning electron microscopy (ESEM) (1) is an imaging technique which allows hydrated, insulating samples to be imaged under an electron beam. The resolution afforded by this technique is higher than conventional optical microscopy but lower than conventional scanning electron microscopy (CSEM). The majo…
Surfaces that display contact angles greater than 150° along with a low contact angle hysteresis for low surface tension liquids such as oils and alcohols are known as superoleophobic surfaces. Such surfaces are of interest for a diverse array of applications including self-cleaning, stain-free clothing and drag reduc…
Zinc oxide thin films have been deposited onto glass substrates from zinc sulfate, ammonia and thiourea aqueous solution by chemical bath deposition. In the work there were specified solution preparation procedure and optimized the composition of the solution and content of component in it. X-ray diffraction and high-…
Adhesion of human osteosarcoma (HOS) cells on hydrophobic polymer surface was studied. Surface of polymer polystyrene (PS) was made hydrophobic by treatment in plasma created in tetrafluoromethane gas (CF4). The PS samples were exposed for 30 s to CF4 plasma created by RF generator powered at 200 W. This treatment tim…
Acid‐catalyzed controlled hydrolytic polycondensation of tetraethoxysilane (TEOS) and tetramethoxysilane (TMOS) provided polyalkoxysiloxanes PEOS and PMOS, with high molecular weight of 1100–12 000 or 2700–31 000, respectively. They were stable to self‐condensation, soluble in organic solvents, and especially characte…
Polylactic acid (PLA) is a representative commodity polyester synthesized from renewable resources. The benefits of PLA over the conventional petrochemical-based plastics are; it is biodegradable, it requires less energy to produce and reduces greenhouse gas production. PLA is mainly produced via a two step bio-chemo…
Nanoclays have shown great potential in the field of controlled release. In particular, the cylindrical geometry and surface chemistry of halloysite nanotubes make them attractive for use as nanocarriers. Halloysite’s tubular cavity can be filled with drug which later diffuses out of the lumen, enabling controlled rel…
Photoirradiation of an appropriately designed caged compound enables the control and manipulation of biological processes in living cells with high spatial and temporal resolution. Brominated (coumarin-4-yl)methyl groups were designed to have favorable photochemical and physical properties as photoremovable protecting…
Recent developments in Surface Enhanced Raman scattering (SERS) towards single-molecule sensitivity and nanometer spatial resolution are reviewed. Particular focus is placed on detailed mechanism and fabrication methods of metal nanostructures to achieve single-molecule sensitivity. Also a gap mode plasmon relevant to…
Polyaniline (PANI)/activated carbon (AC) composites were prepared by a chemical oxidation polymerization. To find an optimum ratio between PANI and AC which shows superior electrochemical properties, the preparation was carried out in changing the amount of added aniline monomers. The morphology of prepared composites…