Materials Literature
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Abstract A kinetic investigation on the reduction of nanometer‐sized nickel oxide particles (supported and unsupported) with hydrogen was carried out. The reduction behavior was found to be related to the average size of NiO crystallites. When the NiO crystallite size was less than about 20 nm, the dissociation of H 2…
We present an optical spectroscopy study on singe crystalline ErTe${}_{3}$, a rare-earth-element tritelluride, which experiences two successive charge-density wave (CDW) transitions at ${T}_{c1}=267$ K and ${T}_{c2}=150$ K. Two corresponding gap features, centered at 2770 ${\mathrm{cm}}^{\ensuremath{-}1}$ ($\ensuremat…
Immobilizing a homogeneous catalyst provides obvious handling benefits, but ideally can also enhance catalyst productivity or selectivity because of beneficial interactions between the surface and the active site. Here, Mn 1,4,7-trimethyl-1,4,7-triazacyclononane dimers ( 1 ) are activated by carboxylate-containing sol…
Abstract In this study the effect of carbon nanotubes content as well as of the tensile stress level applied upon the linear viscoelastic creep response of carbon nanotube polymer nanocomposites was investigated. Experimental findings were modeled by means of the newly developed hybrid viscoelastic interphase model, w…
Abstract To study the effect of organophilic clay concentration on nonisothermal crystallization, poly( L ‐lactic acid) (PLLA)/montmorillonite (MMT) nanocomposites were prepared by mixing various amounts of commercial MMT (Cloisite ® 30B) and PLLA. The effect of MMT content on melting behavior and crystal structure of…
Based on measuring the change of the photoacoustic (PA) signal generated by laser-induced nanobubbles, a new way to detect gold nanoparticles (GNPs) aggregation is demonstrated and applied to selective protein detection.
Spinel ferrites are being considered for advanced spintronic applications. Here, we report on the magnetic properties of ultrathin (3--37 nm) epitaxial films of NiFe${}_{2}$O${}_{4}$ (NFO) on MgAl${}_{2}$O${}_{4}$ (MAO) and SrTiO${}_{3}$ (STO) single crystalline substrates. It is found that NFO films on STO display su…
High surface area TiO2–ZrO2 (1 : 1) has been synthesized by co-precipitation—digestion method using KOH solution as a hydrolyzing agent as well as a digestion medium. The quenching of the mother liquor solution at elevated temperatures resulted in the amorphization of the TiO2–ZrO2 mixed oxide. The highest surface are…
Magnetic hyperthermia has been used for many years to treat a variety of malignant tumors. One of the problems in magnetic hyperthermia is the choice of the correct particle concentration to achieve a defined temperature increase in the tumor tissue. In this study, we evaluated magnetic heat distribution induced by Fe…
We investigate the dynamics of colloidal crystallization in a 32-particle system at a fixed value of interparticle depletion attraction that produces coexisting fluid and solid phases. Free energy landscapes (FELs) and diffusivity landscapes (DLs) are obtained as coefficients of 1D Smoluchowski equations using as orde…
In this paper we report the successful synthesis of the cubic oxyanion containing perovskites, Ba(2)Sc(2-x)P(x)O(5+x) (x = 0.4, 0.5), with the samples analysed through a combination of X-ray diffraction, NMR, TGA, Raman spectroscopy and conductivity measurements. Conductivity measurements indicate a p-type contributio…
Silver-impregnated fabrics are widely used for their antibacterial and antifungal effects, including for clinical clothing such as surgical scrub suits (scrubs). This study investigated whether silver impregnation reduces surface bacterial contamination of surgical scrubs during use in a veterinary hospital. Using aga…
Corrosion inhibition of mild steel by nevirapine, an antiretroviral has been investigated using potentiodynamic polarization, electrochemical impedance spectroscopy technique and weight loss methods. The experimental results suggested, nevirapine is a good corrosion inhibitor for mild steel in 1M hydrochloric acid med…
We report an investigation into the formation of Si x Ge 1– x alloy nanocrystals (64 < x < 100) synthesized from mixing GeI 2:PR 3 adducts with hydrogen silsesquioxane (HSQ). The use of trialkylphosphine adducts allows GeI 2 and HSQ to be homogeneously coprecipitated, improving control over the size and composition of…
Silica containing uniformly dispersed Ni nanoparticles has been synthesized by a precursor solution method, involving heat treatment and reduction stages, and the transformation of the Si–Ni–O precursor into the composite powder has been investigated systematically to determine the formation mechanism of the nanoparti…
Directed enzyme prodrug therapy is an extensive area of research in cancer chemotherapy. Although very promising, the current directed approaches are still hampered by inefficient enzyme expression and tumor targeting. This work investigates the viability of using metal nanoparticles as a novel delivery vehicle for pr…
The neotype magnesium alloy, Mg-Nd-Zn-Zr (NZK) alloy, was implanted into the rabbit femur to investigate its in vivo degradation behavior and biocompatibility. Seventy-two New Zealand white rabbits were randomly divided into the NZK alloy group, titanium alloy group and sham-operated group. Then NZK alloy rods were em…
We investigate and discuss the origin of interface resistance in magnetic trilayers with the half-metallic Co${}_{2}$MnSi by performing first-principles electronic-structure and ballistic transport calculations for Co${}_{2}$MnSi/$X/$Co${}_{2}$MnSi(001) ($X=$ Ag, Au, Al, V, Cr). We found that the matching of the Fermi…
The hot-injection approach has been intensively studied for the synthesis of nanocrystals formed in one-stage nucleation and growth. In the present study, we evaluated the application of hot injection in the preparation of hexagonal-phase NaYF 4:Yb,Er nanocrystals, which is different in that it contains two stages: fo…
Formation of supported lipid bilayers on soft polymer cushions is a useful approach to decouple the membrane from the substrate for applications involving membrane proteins. We prepared biocompatible polymer cushions by the layer-by-layer assembly of two polysaccharide polyelectrolytes, chitosan (CHI) and hyaluronic a…