Materials Literature
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Neurodegenerative and infectious disorders related to host genetics, aging, and environment are rapidly increasing. Drugs, vaccines, or regenerative proteins offer "real" possibilities for positively affecting disease outcomes but are limited by access across the blood-brain barrier. New developments in nanomedicine a…
Abstract The homopolymerizations of D , L ‐lactide and glycolide catalyzed by ZnOct 2 were studied by DSC. The kinetic parameters obtained are compared with those obtained from conversion data of bulk polymerizations. For the glycolide, the respective values of the calculated rate constants were quite similar. For the…
Abstract A novel method for Ferroresonance detection is presented in this paper. Using this method Ferroresonance can be discriminate from other transients such as capacitor switching, load switching and transformer switching. Wavelet transform is used for decomposition of signals and Learning Vector Quantizer(LVQ) ne…
A near-infrared metamaterial design that is reconfigurable between almost completely transmissive and reflective states is presented. The reconfiguration is enabled by tuning the anisotropic nematic liquid crystals used as a spacer layer between two silver nanoplates in a planar doubly periodic metamaterial. The desig…
Five new trinuclear Cu-Ln-Cu cluster complexes have been prepared by a one-pot reaction using H3bcn (tris- N,N',N''-(2-hydroxybenzyl)-1,4,7-triazacyclononane) and Ln = La(III), Nd(III), Gd(III), Dy(III), and Yb(III) where the d- and f-block metal ions are in close proximity desirable for magnetic studies. The [LnCu2(b…
Abstract Based on an in situ template method, branched phosphazene‐containing nanotubes were synthesized via a controlled two‐step adding technique of acid acceptors. Structural and morphological characterizations of the as‐synthesized products were performed by SEM, TEM, EDX and FTIR. The results showed that the bran…
Abstract Chromophore‐containing dendritic structures (G1, G2) are utilized to intercalate layered silicates, which results in a large d ‐spacing up to 126 Å. An exfoliated morphology is obtained by mixing the dendritic structure intercalated layered silicates with polyimide in N , N ‐dimethylacetamide solution. The de…
In this study, the interactions of two gold nanoparticles of different sizes (average diameters of 3.7 +/- 2.6 and 17 +/- 3 nm) with octameric mycobacterial porin A from Mycobacterium smegmatis (MspA) and a mutant of MspA featuring a cysteine mutation in position 126 (Q126C) are investigated. From the observation of e…
Abstract In this study, a method for the calculation of the electric field on high voltage insulators is presented. A model of the insulator string was set up using OPERA, an electromagnetic analysis program based on the Finite Element Method. In order to validate the accuracy of the method, simulated results have bee…
We report on spatial control of nanoporosity in polyelectrolyte multilayer (PEM) films using photopatterning and its effects on film optical and adsorption properties. Multilayers assembled from poly(acrylic acid-ran-vinylbenzyl acrylate) (PAArVBA), a photo-cross-linking polymer, and poly(allylamine hydrochloric acid)…
Abstract A facile route to synthesize well‐defined polybutadiene (PBd) DendriMacs is described. In a highly modified approach to that recently published for the synthesis of polystyrene DendriMacs, a G1 polybutadiene (PBd) DendriMac has been synthesized in three simple and high yielding steps. The first step involves…
We report a fluorescence-based approach to probing the conformation of a macromolecule, poly(allylamine hydrochloride) (PAH), in bimodal mesoporous silica (BMS) particles. The method involves monitoring the fluorescent properties of the probe, 1,3,6,8-pyrenetetrasulfonic acid tetrasodium salt (4-PSA), upon electrostat…
Hydrogenated carbon films were prepared by magnetron sputtering of a titanium target in methane and argon atmosphere. The film grown at −800 V bias exhibits excellent mechanical properties with a hardness of 20.9 GPa and an elastic recovery as high as 85%. Its structure, characterized by high-resolution transmission e…
The ensemble PL quantum yield for raw single-walled carbon nanotubes (SWNTs) dispersed in sodium cholate (SC) is approximately 5 times greater than that for the same raw SWNTs dispersed in sodium dodecyl sulfate (SDS) and approximately 10 times greater than the quantum yield of purified SWNTs dispersed in SC. Absorban…
Polyaniline (PANI) nanotubes were successfully synthesized using the hydrothermal method via an in situ polymerization. In the process, a fibrillar complex of FeCl(3) and methyl orange (MO), acting as the reactive self-degraded templates, directed the growth of PANI on its surface and promoted the assembly into nanotu…
We describe the optimization of Mn–Zn ferrites having a high permeability between −50 and +150°C. These ferrites are intended to be integrated into a magnetic field sensor for space mission. The chemical composition Mnx2+Zny2+Fe0.052+Ti0.014+Fe23+O4 was investigated by varying the Mn∕Zn ratio. The magnetic characteriz…
We report on fabrication of metal nanotubes in semiconductor nanotemplates possessing ordered two-dimensional hexagonal arrays of pores grown in n-InP crystalline substrates using anodic etching in neutral electrolyte. Electrochemical pulsed deposition of arrays of Pt nanotubes with diameters of 70 and 140 nm is demon…
Abstract The influence of boehmite crystallite sizes, varied between 10 and 60 nm, was studied with respect to the morphology development, crystallization behavior and mechanical properties of the boehmite‐based iPP nanocomposites. The nanometer‐scaled boehmites were formed during twin‐screw melt extrusion of iPP at 2…
From $^{59}\mathrm{Co}$ and $^{23}\mathrm{Na}$ NMR, we demonstrate the impact of the ${\mathrm{Na}}^{+}$ vacancy ordering on the cobalt electronic states in ${\mathrm{Na}}_{0.75}{\mathrm{CoO}}_{2}$: at long time scales, there is neither a disproportionation into 75% ${\mathrm{Co}}^{3+}$ and 25% ${\mathrm{Co}}^{4+}$ st…
The data produced shed new light on particle formation under fast Joule heating: the particle size depends on the initial size of the crystallites of a metal. The size of crystallites has been determined by the x-ray diffraction method as the size of the region of coherent scattering d(RCS). Median-surface particle si…