Materials Literature
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The simple synthesis of one-dimensional (1D) semiconducting nanostructures with high charge-carrier transport is an important aim for the fabrication of organic electronic devices. Here, we report an initiator-assisted chemical processing technique that creates 1D nanocomposites consisting of a nanofibrillar polyanili…
Abstract Conducting polymers (CPs) provide a class of processible, film forming semiconductors and metals. Electrical and optical properties of CPs, similar to those of metals and semiconductors, and the attractive properties associated with conventional polymers such as ease of synthesis and processing, has given the…
Hydrogenated diamondlike carbon (H-DLC) coatings provide excellent wear resistance and low friction for bearing applications. However, the use of such coatings with aqueous lubricants could pose some difficulties due to the hydrophobic nature of the surface. A thrust bearing tribometer was used to compare performance…
Electrical detection of specific proteins was demonstrated using aptamer-modified graphene field-effect transistors (G-FETs). Immunoglobulin E (IgE) aptamers were immobilized onto the graphene surface with 1-pyrenebutanoic acid succinimidyl ester as a linker. From an atomic-force microscopy image, the height of the gr…
The synthesis and properties of Mg((x))Zn((1 - x))Fe(2)O(4) spinel ferrites as a low-toxicity alternative to the technologically significant Ni((x))Zn((1 - x))Fe(2)O(4) ferrites are reported. Ferrite nanoparticles have been formed through both the polyol and aqueous co-precipitation methods that can be readily adapted…
In the hope of developing metal nanoparticles that are expected to possess simultaneously higher surface-enhanced Raman scattering (SERS) activity and also catalytic activity, we have prepared Ag/Pd alloy nanoparticles by coreduction of Ag and Pd ions using citrate and then examined their characteristics in terms of t…
Standard approximations to the density functional theory exchange-correlation functional have been extraordinary successful, but calculating formation enthalpies of reactions involving compounds with both localized and delocalized electronic states remains challenging. In this work we examine the shortcomings of the g…
A key consideration for all radioactive waste vitrification technologies is the physical and chemical integrity of the melting vessel. Most melting vessels require refractory liners that can safely withstand the high-temperature, highly corrosive environment, contain molten waste mixtures during melting and provide ro…
Linear free energy relationships (LFER) combined with molecular dynamics (MD) simulations were used to investigate the sorptive characteristics of organic compounds (OCs) on cetyltrimethylammonium (CTMA) intercalated montmorillonite (CTMA-Mont). The LFER for OCs sorption on CTMA-Mont, log K(oc) = (1.45 ± 0.20)E - (0.3…
In recent years, the electrospinning system has been attracting great attention due to various potential applications in many areas of science and technology as a cost-effective and highly versatile technique used to produce continuous nanofibers. However, solution electrospinning of polyolefins, including polyethylen…
Many entities currently use permeability specifications in portland cement concrete (PCC) pavements and structures. This project investigated the use of a surface resistivity device as an indication of concrete’s ability to resist chloride ion penetration for use in quality assurance (QA) and acceptance of concrete. A…
The characteristics of the excitonic absorption and emission around the fundamental bandgap of wurtzite MgxZn1−xO grown on c-plane sapphire substrates by plasma assisted molecular beam epitaxy with Mg contents between x = 0 and x = 0.23 are studied using spectroscopic ellipsometry and photoluminescence (PL) measuremen…
Abstract Aqueous‐phase Fe 3 O 4 nanoparticles (NPs), with a size of 9.8 ± 3.0 nm, are directly synthesized by a modified iron salt coprecipitation process, stabilized by the synergistic effect of a combination of poly(vinylpyrrolidone) (PVP), trisodium citrate (TSC), and maleic anhydride (MAH). These NPs show good aqu…
We show stimulated emission depletion microscopy to break the diffraction limit in the all-far-field-optical detection of magnetic fields and resonances. Electron spin resonances from single nitrogen-vacancy centers in diamond located at subdiffraction proximities are fully discerned. Since diffraction is overcome by…
Colour centres in diamond are promising candidates as a platform for quantum technologies and biomedical imaging based on spins and/or photons. Controlling the emission properties of colour centres in diamond is a key requirement for the development of efficient single-photon sources having high collection efficiency.…
The review is devoted to the theory of nonradiative transitions in tricharged ions of lanthanides and transition metals in the condensed phase, which was proposed in 1971. The theory is based on the phenomenon of nonradiative energy transfer from an electronically excited ion to surrounding molecular groups with excit…
The exact solutions due to Philip [ZAMP 23, 353 (1972)] for Stokes shear flow over a periodic array of no-shear slots embedded in a no-slip surface are generalized to account for an arbitrary pattern of no-shear slots in each period window. The slots, or grooves, in each period window run parallel to each other, and a…
This study investigates the effect of Na content on the structural, optical, and electrical properties of sol-gel Na-doped ZnO films using x-ray diffraction, photoluminescence, and conductivity measurements. It is shown that a p-type conversion of the Na-doped ZnO film might be due to a combined effect of the increase…
A synthetic approach is developed to obtain families of luminescent lanthanide complexes and markers from a generic family of precursors built from nonadentate coordination sites. The syntheses of the precursors, based on a directed regioselective nucleophilic aromatic substitution on polyfluoropyridines, are describe…
This article is a perspective that includes a brief introduction to nanofiber production methods, their potential applications, and three review articles in the field of nanofibers. Although the full range of applications that best exploit these new developments are yet to be developed, the emerging innovative applica…