Materials Literature
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Electrospun nanofibrous membranes (ENM) which have a porous structure have a huge potential for various liquid filtration applications. In this paper, we explore the viability of using plasma-induced graft copolymerization to reduce the pore sizes of ENMs. Poly(vinylidene) fluoride (PVDF) was electrospun to produce a…
This paper presents a concise, although admittedly non-exhaustive, didactic review of some of the main concepts and approaches related to the use of molecularly modified metal nanoparticles in or as chemical sensors. This paper attempts to pull together different views and terminologies used in sensors based on molecu…
Low-temperature three-terminal transport measurements through a thiol end-capped Pi -conjugated molecule have been carried out. Electronic excitations, including zero and finite-bias Kondo-effects have been observed and studied as a function of magnetic field. Using a simplified two-orbital model we have accounted for…
In this paper we report an extensive neutron diffraction investigation at high temperature on the BaCe0.80Y0.20O2.9 proton conducting material. Our results precisely define the structural evolution of the compound as a function of temperature which is from a monoclinic (room temperature) to a cubic (800C) structure. N…
We report a facile, solution-phase route to large-scale fabrication and characterization of single crystalline Cu 2 O nanowires with controllable diameter, different morphologies, and high aspect ratios. The synthesis of Cu 2 O nanowires is achieved by the reduction of cupric acetate with o -anisidine, pyrrole, or 2,5…
Abstract Bactericidal efficacy of gold nanoparticles conjugated with ampicillin, streptomycin and kanamycin were evaluated. Gold nanoparticles (Gnps) were conjugated with the antibiotics during the synthesis of nanoparticles utilizing the combined reducing property of antibiotics and sodium borohydride. The conjugatio…
Water-soluble and stable quantum dots (QDs), CdTe and CdZnSe, are applied for ultrasensitive Pb(2+) detection. These QDs are capped with glutathione (GSH) shells. GSH and its polymeric form, phytochelatin, are employed by nature to detoxify heavy metal ions. As a result of specific interaction, the fluorescence intens…
We previously reported that monodisperse silica particles (SiPs) afforded with a high-density brush of poly(methyl methacrylate) (PMMA) and suspended in a good solvent for PMMA formed a colloidal crystal in a certain concentration range ( Macromolecules 2006, 39, 1245). Here we investigated similar hybrid particles wi…
To investigate the consequences of macromolecular crowding on the behavior of a globular protein, we performed a combined experimental and computational study on the 148-residue single-domain alpha/beta protein, Desulfovibrio desulfuricans apoflavodoxin. In vitro thermal unfolding experiments, as well as assessment of…
With their impressive individual properties, carbon nanotubes should form high-performance fibers. We explored the roles of nanotube length and structure, fiber density, and nanotube orientation in achieving optimum mechanical properties. We found that carbon nanotube fiber, spun directly and continuously from gas pha…
Concerns on quantum dots (QDs) have been continuously increasing because of their advantages on photophysical properties. Water soluble CdTe/CdS core-shell and CdTe/CdS/ZnS multi-layer QDs were synthysized with mercaptopropanoic acid (MPA) as stabilizer in aqueous phase in the current research. The obtained QDs were c…
Management of moisture penetration and hydrolytic degradation of polylactide (PLA) is extremely important during the manufacturing, shipping, storage, and end-use of PLA products. Moisture transport, crystallization, and degradation in PLA have been measured through a variety of experimental techniques including size-…
The structural, magnetic, and electric properties of perovskite Y1-xSrxCoO 3- have been investigated systematically over the 0.6 x 0.9 range of doping. The refinements of X-ray powder diffraction (XRD) patterns at room temperature indicates that the investigated samples show a unit cell of about 2 2 4 simple perovskit…
Application of uniaxial stress reveals the Jahn–Teller (JT) properties of the defect ions Ni + (3d 9 ), Rh 2+ (4d 7 ) and Pt 3+ (5d 7 ), all incorporated on Ti 4+ sites in BaTiO 3 . In all cases the vibronic ground states are stabilized by an E e Jahn–Teller effect, here leading to tetragonally elongated defect–O 6 oc…
A phase field model for simulating grain growth and thermal grooving in thin films is presented. Orientation dependence of the surface free energy and misorientation dependence of the grain boundary free energy are included in the model. Moreover, the model can treat different mechanisms for groove formation, namely t…
We present a theoretical analysis of the scaling of the polarization and the static dielectric susceptibility through a mean-polarization approach for ultrathin epitaxial PbZrxTi1−xO3 thin films. We use the traditional Euler-Lagrangian framework applied to a Landau-Ginzburg-Devonshire (LGD) nonlinear thermodynamic tre…
Abstract Thermal and viscoelastic properties of composites of polypropylene (PP) filled with 0–8 vol % of vapor grown platelet carbon nanofibers (PCNF) were investigated. High shear mixing was used to disperse and distribute the nanofibers. Scanning electron microscope (SEM) was used to study the morphology of the com…
Abstract Conducting polymers bearing nitro substituents are very important from both academic and industrial viewpoints. However, it is very difficult to electrosynthesize such conducting polymers because of the strong electron‐withdrawing effect of nitro groups. In this article, we describe the electrochemical synthe…
A density functional calculation of a Ag (111)/ZnO (0001) interface with 30° rotated epitaxy reveals that the strength of the interface, as determined from the work of separation, is significantly lowered by the presence of hydrogen. This interface has been observed in magnetron sputtered thin-film systems and could b…
We have investigated the magnetic properties of Ni2+ exchanged NaY zeolite by using a direct current magnetization technique. At T>5 K, the M vs H/T curves superimpose and these curves could be fitted well using a Langevin function with a log-normal distribution of moments. The mean spin-cluster moment has been…