Materials Literature
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We investigate the stiffening effect of graphene sheets dispersed in polymer nanocomposites using the Mori–Tanaka micromechanics method. The effective elastic moduli of graphene sheet-reinforced composites are first predicted by assuming that all the graphene sheets are either aligned or randomly oriented in the polym…
Nanotechnology offers novel delivery vehicles for cancer therapeutics. Potential advantages of nanoscale platforms include improved pharmacokinetics, encapsulation of cytotoxic agents, enhanced accumulation of therapeutics in the tumor microenvironment, and improved therapeutic structures and bioactivity. Here, we rep…
Polycrystalline LaFe0.9Ni0.1O3 is prepared by the solid state reactions route. X-ray diffraction is used to analyse the phase purity of the compound. Impedance spectra of LaFe0.9Ni0.1O3 over the frequency range of 1?Hz to 10?MHz are investigated at different temperatures from 100 to 373?K. Two relaxation processes wit…
BACKGROUND: There is renewed interest in magnetic hyperthermia as a treatment modality for cancer, especially when it is combined with other more traditional therapeutic approaches, such as the co-delivery of anticancer drugs or photodynamic therapy. METHODS: The influence of bimagnetic nanoparticles (MNPs) combined w…
A new, highly efficient green oxyfluoride phosphor family Sr 2.975− x Ba x Ce 0.025 AlO 4 F (SBAF:Ce 3+ ) has been developed as a component of solid state white light emitting diodes (LED). The phosphor emits with a maximum at 502 nm when excited by 405 nm excitation, with a quantum efficiency approaching 100%. When S…
Double-walled polyurethane/poly(urea-formaldehyde) microcapsules (PU/UF) are prepared for use in self-healing materials. This modified encapsulation procedure combines two chemistries to form more robust capsule shell walls in a single operation. Robust capsules are formed by this procedure as long as the aromatic pol…
Chitin and chitosan are naturally-occurring compounds that have potential in agriculture with regard to controlling plant diseases. These molecules were shown to display toxicity and inhibit fungal growth and development. They were reported to be active against viruses, bacteria and other pests. Fragments from chitin…
Biomedical nanomagnetics is a multidisciplinary area of research in science, engineering and medicine with broad applications in imaging, diagnostics and therapy. Recent developments offer exciting possibilities in personalized medicine provided a truly integrated approach, combining chemistry, materials science, phys…
Abstract Silsesquiazanes bearing different groups [RSi(NH) 1.5 ] n (R = C 12 H 25 , Ph, H) were hydrolyzed and the resulting products were characterized. [C 12 H 25 Si(NH) 1.5 ] n was hydrolyzed by heating in an autoclave with water at 120 °C for 16 h. [PhSi(NH) 1.5 ] n was hydrolyzed by heating with water at 50 °C fo…
Abstract The Si energy loss function (ELF) for energy loss Δ E less than 30 eV was obtained from experimental λ( E ) K (Δ E ) distributions using a factor analysis method. λ( E ) K (Δ E ), which are the products of the inelastic mean free path (IMFP) [λ( E )] and the differential inverse IMFPs or inelastic scattering…
Abstract A Monte Carlo simulation approach has been developed to describe electron scattering processes from silicon in the keV and sub‐keV electron energy range. Ionizations, excitations, secondary electron production, relaxation and auger emissions are considered during the simulations. In the present study, we show…
Abstract Semiconductor nanoparticles (so‐called ‘quantum dots’, QDs) are investigated for about 20 years because of their unique fluorescent and semiconductive properties. QDs were mainly used for analytical systems outside and inside a living organism. However, for most of these analytical systems, surface of QDs has…
Homogeneous oligodeoxyguanylates incorporating small-molecule intercalator pyrene moieties in a 1,5 relationship form various structures of dimer, trimer, tetramer and internal hairpin form that are yellowish in color because of the intermolecular interactions between the pyrene units.
Almost completely exfoliated natural rubber/butadiene rubber/organophilic montmorillonite (NR/BR/OMMT) nanocomposites were successfully prepared by mechanical blending. The optimal type of OMMT was carefully selected, using characterization by X-ray diffraction (XRD) and the mechanical properties of composites, from t…
Bis-thiourea strontium chloride was synthesized and single crystals were grown by the slow solvent evaporation technique using aqueous solvent. The solubility curve was obtained and the determination of the induction period as well as the evaluation of kinetic parameters of nucleation was carried out. The powder XRD a…
Glass‐forming range and electrical conduction properties of V 2 O 5 –P 2 O 5 –WO 3 ternary system were investigated. The glass‐forming ability of this system was quite good within a wide compositional area where the P 2 O 5 content ranges from 20 to 80 mol%. This glass exhibited a high dc‐conductivity up to 6.71 × 10…
Nanosized CdSe particles were synthesized at a temperature of 115°–175°C by a solution method with air pressure condition. Ethylene glycol (EG) was used as the main solvent and sodium selenite and cadmium nitrate‐tetrahydrate as inorganic sources. The influence of refluxing temperature and time on growth morphology an…
Abstract We studied the surface modification of polyethylene terephthalate (PET) by grafting with methacrylic acid (MAA) through plasma‐induced polymerization method. The results show that the grafting yield increases with the increase of reaction temperature. The grafting yield is in proportion to the increase of mon…
The effects of chemical components in a SERS sample preparation on the time scale of the SERS enhancement process have not previously been examined in detail. In this report the effects of the nature and concentration of aggregating agent as well as the concentration of both colloid and analyte on the time dependence…
We show that it is possible to induce a defined secondary structure in de novo designed peptides upon electrostatic attachment to negatively charged lipid bilayer vesicles without partitioning of the peptides into the membrane, and that the secondary structure can be varied via small changes in the primary amino acid…