Materials Literature
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Abstract To further enhance the performance of biodegradable polymer‐based medical devices, there is an increasing need to obtain independent control of key properties such as mechanical strength, degradation rate, and bioactivity. In this study, biodegradable copolymers of poly(1,6‐bis‐ p ‐carboxyphenoxyhexane‐ co ‐s…
Hexagonal tris(o-phenylenedioxy)cyclotriphosphazene (TPP) is used as ahost for organizing dipolar molecular rotor guests into regular trigonal arrays. Inclusion of molecular rotors with transversely dipolar rotators into TPP channels is followed by solid-state nuclear magnetic resonance, diifferential scanning calorim…
In this work, we report on the observation of the electromagnetic parameters of glass-covered amorphous microwires/epoxy composites with various concentrations of microwires over a broad magnetic field range up to 1 kOe. The effective permittivity presents a strong tunability with respect to a dc magnetic field excita…
Durian skin fibres (DSF) are cellulose-based fibres extracted from the durian peel. This paper present the physical behaviour, chemical structure and crystallinity of the fibres, as observed by environmental scanning electron microscope (ESEM), Fourier transform infrared (FTIR) and X-ray diffraction (XRD). The charact…
Manufacturing issues of electrical energy storage devices are very complex as it requires consideration of electrical, mechanical, and economic aspects. Supercapacitor is a new energy storage device. It is operated along with batteries or fuel cells to shave off the pulse power demand. The energy density of supercapac…
Abstract In this research, poly(butylene terephthalate) (PBT) electrospun nanofibrous mats were prepared for white blood cell (WBC) filtration after the blood was collected from donors. The feasibility of using PBT electrospun mats used as WBC filtration materials was studied. The average fiber diameter and mean pore…
High-pressure synchrotron x-ray powder diffraction experiments were performed on PbVO(3) tetragonal perovskite in a diamond anvil cell under hydrostatic pressures of up to 10.6 GPa at room temperature. The compression behavior of the PbVO(3) tetragonal phase is highly anisotropic, with the c-axis being the soft direct…
We investigate a giant magnetoresistance (MR) effect in periodic, asymmetric magnetic superlattices (MSLs) on graphene. The MR ratio shows a strong dependence on both the interval of magnetic barriers and the asymmetry degree of the structures. With the increase of the number of periods, there is only one MR peak and…
PURPOSE: We used two ligand-modified liposomal drugs to selectively deliver two different chemotherapeutics to tumor cells (TC) and tumor vasculature endothelial (TV) cells, and examined the therapeutic effect of altering the order of treatment administration, and the effect of the temporal spacing of the treatments o…
Single crystals of LaFeAsO were successfully grown out of KI flux. Temperature-dependent electrical resistivity was measured with current flow along the basal plane, ${\ensuremath{\rho}}_{\ensuremath{\perp}}(T)$, as well as with current flow along the crystallographic $c$ axis, ${\ensuremath{\rho}}_{\ensuremath{\paral…
Diamond-like porous aromatic frameworks (PAFs) form a new set of materials that contain only carbon and hydrogen atoms within their frameworks. These structures have very low mass densities, large surface area, and high porosity. Density-functional-based calculations indicate that crystalline PAFs have mechanical stab…
Abstract A series of new polyhedral oligomeric silsesquioxane ionic liquids (POSS‐ILs) based on the trimethylpropylammonium hepta(isooctyl)octasilsesquioxane cation and a variety of anions have been synthesized and characterized. Their thermal behavior has been ascertained by thermogravimetric and differential thermal…
Abstract Polyaniline nanocomposites containing various concentrations of carboxylic acid functionalized multiwalled carbon nanotubes (PANI/c‐MWCNT) were synthesized by in situ chemical oxidation polymerization of aniline monomer using ammonium persulfate in the absence of any added acids. The electrical conductivity m…
Polymer films of some polyimides containing pendant phthalonitrile groups were prepared by casting the corresponding poly(amic acid) solutions onto glass plates, followed by thermal imidization under controlled temperature conditions. The poly(amic acid)s were synthesized by polycondensation reaction of 4,4′‐diamino‐4…
This work demonstrates the ability to electrospin reagents into water-soluble nanofibers resulting in a stable on-chip enzyme storage format. Polyvinylpyrrolidone (PVP) nanofibers were spun with incorporation of the enzyme horseradish peroxidase (HRP). Scanning electron microscopy (SEM) of the spun nanofibers was used…
This paper demonstrates a substantial enhancement in radiation tolerance for small period-thickness of CrN/AlTiN multilayered nanofilms. CrN/AlTiN multilayered nanofilms with period-thicknesses of 3, 5, 7, and 9 nm were irradiated by 190 keV Ar+ ions to fluences ranging from 1 to 5 × 1016 ions/cm2. Nanofilm with 3 nm…
The commercial clay modified with zeolite and La 2 O 3 was characterized by thermoprogrammed desorption (t.p.d.) of NH 3 and pyridine adsorption followed by Fourier transform infrared spectroscopy (FTIR). The result showed that the weak Lewis acid plays an important role in the alkylation reaction between olefin and a…
High-resolution x-ray and neutron diffraction of (0.96)Na0.5Bi0.5TiO3–(0.04)BaTiO3 (NBT-4BT) reveal subtle structural distortions that evidence lower symmetry than allowed in the R3c space group. The combined refinement that best models the diffraction patterns is a two phase mixture of a monoclinic Cc phase and a min…
In this study, definitions and explanations of the relationships between selected independent and dependent parameters of roller electrospinning are introduced. We aimed to define and completely analyze new parameters, such as the number of Taylor cones per square meter, the spinning performance for one Taylor cone, t…
To find alternative high temperature magnets containing no heavy rare earths for power applications, SmCo5/Fe bulk nanocomposite magnets with enhanced energy density and high thermal stability have been produced by using a ball-milling plus warm-compaction route. Up to 30% of the Fe soft magnetic phase has been added…