Materials Literature
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A novel vectorial modal method is presented for studying guidance and scattering of frequency-selective structures based on lossy all-dielectric multilayered waveguide gratings for both TE and TM polarizations. The wave equation for the transverse magnetic field is written in terms of a linear differential operator sa…
The atomic force microscope (AFM) is introduced as a biomolecular manipulation machine capable of assembling biological molecules into well-defined molecular structures. Native collagen molecules were mechanically directed into well-defined, two-dimensional templates exhibiting patterns with feature sizes ranging from…
Abstract The chemical modification of maritime pine sapwood ( Pinus pinaster ) with alkoxysilanes was studied according to three different pathways: carbamoylation with 3-isocyanatopropyltriethoxysilane, etherification with 3-glycidoxypropyltrimethoxysilane and alcoholysis of n-propyltrimethoxysilane. Grafting was con…
The adsorption of PAMAM G4OH dendrimer and dendrimer-stabilized platinum nanoparticles onto alumina supports has been investigated using in situ attenuated total reflection infrared (ATR−IR) spectroscopy. The presence of dendrimers on the Al 2 O 3 surface is indicated by the appearance of several characteristic vibrat…
In the present work, we investigated self-assembling of a poly(phenylacetylene) carrying L-valine pendants (PPA-Val) in a water/methanol solution, upon evaporation of the solution on mica, and on the water surface. With intercalation of a fluorescence probe of Ru(phen)2(dppx)2+ (phen = 1,10-phenanthroline, dppx=7,8-di…
Modern protein secondary structure prediction methods are based on exploiting evolutionary information contained in multiple sequence alignments. Critical steps in the secondary structure prediction process are (i) the selection of a set of sequences that are homologous to a given query sequence, (ii) the choice of th…
Abstract Low‐pressure microwave plasma has been used to incorporate new functionalities onto the surface of cyclic olefin copolymers (COC). The main goal of the plasma treatment was to hydrophilize the COC's surface in order to enhance its adhesion to metals. The effect of two plasma parameters (treatment time and typ…
We describe a technique to determine the $s{p}^{3}∕s{p}^{2}$ ratio of carbon materials which is based on the electron-energy-loss spectroscopy and which uses the theoretical spectrum of graphite obtained from ab initio electronic structure calculations. The method relies on the separation of the $\ensuremath{\pi}*$ an…
Partial discharge (PD) measurements constitute one of the most promising tools for electrical insulation diagnosis. This paper describes how a procedure based on PD measurements can provide early detection of electrical trees in polymeric insulation systems. Such an application relies upon a new methodology, which pro…
Abstract When polyethylene terephthalate (PET) is stretched, it exhibits strain‐hardening properties, which are temperature and strain‐rate dependent. In this paper, two grades of PET are experimentally characterized using biaxial tests. A visco‐hyperelastic model is used to describe the stretching behavior for the po…
The objective of this study is to enhance the delivery of Doxorubicin hydrochloride to Dalton's lymphoma solid tumour through poly(butyl cyanoacrylate) (PBC) nanoparticles. Doxorubicin loaded PBC (DPBC) nanoparticles were prepared by emulsion polymerization and characterized by particle size analysis, zeta potential a…
A new application of the recently described drop coating deposition Raman (DCDR) method facilitates the segregation and independent spectral characterization of mixture components. The quality of the normal (un-enhanced) Raman spectra are significantly improved as a result of reduced spectral interference from fluores…
Thiolalkylated polyethylene glycol (PEG) ligands have been designed and synthesised for use in the manufacturing of stable water soluble gold MPCs. In addition to ongoing work on the synthesis of size and shape selective aq. (aqueous) gold nanoparticles, the effect of avidin gold nanoparticle (AGNP) ratio on biotinyla…
The photoinduced alignment of ferroelectric liquid crystals (FLCs) onto photochemically stable azo-dye films was studied. The alignment quality of FLC display cells depends mainly on the difference between the FLC surface energy and the aligning substrates surface energy; however, the structure and thickness of FLC la…
The corrosion of bare steel under an aqueous boundary layer with dissolved carbon dioxide (CO2) was modeled to investigate the effect of CO2. The model incorporated the coupled effect of CO2 diffusion, hydration, local ionic equilibria, ferrous carbonate (FeCO3) precipitation, and steel corrosion. The model was verifi…
Abstract Accurate determination of overlayer thickness on samples with curved surfaces is of growing importance, especially in connection with nanometric materials systems. In this work two simple geometries are treated; closely packed spheres, well representing powder samples, and close‐packed cylinders, modelling fi…
Abstract A GaP(001) surface treated by (NH 2 ) 2 CS/H + solution has been studied by Auger electron spectroscopy (AES) and XPS. The AES result indicates that the GaP(001) surface can be sulfurized by (NH 2 ) 2 CS/H + solution. Oxygen and nitrogen could be almost removed upon annealing at 550°C. The sulfur on the surfa…
In this work, a study of the particulate matter emitted from standard residual oil combustion and from natural gas reburning during oil combustion in a pilot scale furnace was carried out. The sizes, morphologies and chemical element distribution of particles were analyzed through scanning electron microscopy coupled…
The ferroelectric sodium-bismuth titanate Na0.5Bi0.5TiO3 (NBT) is now considered as one of the lead-free materials which could be used instead of the lead-bearing materials from the view point of environment impact. Several previous studies were focused on the preparation and properties of NBT as single crystals and c…
Abstract The present work is the first comprehensive account of the knowledge acquired from single crystals of the isotopic series M 2 Te 4 O 11 (M = La - Nd, Sm - Yb). In the crystal structure, the M 3+ cation is coordinated by eight oxygen atoms in the shape of a distorted square antiprism. Out of these polyhedra a…