Materials Literature
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The correlation between crystal structure and intrinsic dielectric properties of the unusual cubic perovskite-related family of compounds $A{\text{Cu}}_{3}{\text{Ti}}_{4}{\text{O}}_{12}$, where $A=\text{Ca}$, Cd, ${\text{La}}_{2/3}$, ${\text{Bi}}_{2/3}$, ${\text{Na}}_{1/2}{\text{La}}_{1/2}$, ${\text{Na}}_{1/2}{\text{B…
In this study, the induction period ( t ind ) of l -arginine trifluoroacetate (LATF) at different levels of supersaturation have been examined at 298.15 K for both spontaneous and seeded growth systems. From the dependence of t ind on supersaturation, it was possible to distinguish between the mechanisms of homogeneou…
Manufacturing of Pharmaceutical drug products and drug substances shall demonstrate a control to reproduce consistently the desired quality of product, wherein the control of cross-contamination plays an important roll. Residual materials from the previous batch of the same product or from different product may be car…
Abstract Single‐layer graphene islands with a typical diameter of several nanometers were grown on a Pt (111) substrate. Scanning tunneling microscopy (STM) analysis showed most of islands are hexagonally shaped and the zigzag‐type edge predominates over the armchair‐type edge. The apparent height at the atoms on the…
Copolymers composed of PLA and PTAm were prepared by a macromonomer approach. The PLA bearing vinyl group at chain end was copolymerized with 2,2,6,6-tetrametylpiperidine-4-ylacrylamide. The resulted copolymers were oxidized by a peroxide to give PTAm-g-PLA. The structures of the copolymers were confirmed by NMR and F…
Abstract Epoxy resins are widely used in a variety of applications because of their high chemical and corrosion resistance and good mechanical properties. But few types of epoxy resins are brittle and possess low toughness which makes them unsuitable for several structural applications. In this work, carbon nanofibres…
The role of C-methyl-4,10,16,22-tetrametoxy calix[4]arene as inhibitor of calcium carbonate scale formation has been investigated. The result shows that C-methyl-4,10,16,22-tetrametoxy calix[4]arene inhibits a formation of calcium carbobate crystals at a concentration of growth solution of 0.1 M. The ability of C-meth…
Abstract The magnetic properties of the dinuclear and tetranuclear nickel(II) tetrazolato complexes [Ni 2 L( R CN 4 )][BPh 4 ] ( R = H ( 4 ), Me ( 5 ), Ph ( 6 )) and [(Ni 2 L) 2 (1,4‐(CN 4 ) 2 ‐C 6 H 4 )][BPh 4 ] 2 ( 7 ), where (L) 2– represents a 24‐membered macrocyclic N 6 S 2 supporting ligand, are reported. Analys…
For the reconstruction of functional tissue, biodegradable scaffolds providing specific surface functionality and a three-dimensional structure matching that of the damaged tissue are needed. Fibers capable of controlling cell-fiber interaction were produced by electrospinning of PDLLA-block-PEG with thiol-reactive en…
A polarimeter using selected Glan-Thompson polarizers, a spatially filtered probe laser beam, precision polarizer orientation, and spatially filtered output coupling into an optical fiber achieves a static extinction ratio between crossed and parallel polarizer and analyzer orientations of I(perpendicular)/I(parallel)…
Abstract This study examined the spinning of polyurethane‐based elastomeric fibers with the dry‐jet‐wet spinning method. The three important spinning variables that were chosen were the coagulation bath ratio (dimethylformamide/water), the bath temperature, and the stretch ratio. A three‐variable factorial design meth…
High-quality bilayers of La-doped ${\text{SrTiO}}_{3}$ (STO) and ${\text{LaAlO}}_{3}$ (LAO) on ${\text{SrTiO}}_{3}$ have been grown controlling the location and behavior of the charge carriers by changing the thicknesses of the layers, which are dielectrically mismatched. In this system, the charge carriers are create…
Convergence problems in modal methods for TM polarized fields are often attributed to the inaccuracies in computing the modes of a grating. We report that even in the absence of these inaccuracies convergence problems persist. These arise because of the truncation of the infinite set of linear equations resulting from…
Abstract MnZn ferrite (Mn 0.5 Zn 0.5 Fe 2 O 4 ) nanoparticles in amorphous SiO 2 were prepared using the chemical wet method. On the basis of the X‐ray diffraction peaks, the particle sizes were estimated to be between 17 and 41 nm, depending on the flow rate of Ar gas. The particle size increased with the flow rate…
FTIR microspectrometry with in situ temperature variation and IR-peak-mapping capability, and POM characterization were used to study the crystal distribution in dual spherulites in poly(heptamethylene terephthalate). By tracing the crystalline IR bands of the α-crystal and β-crystal to get the crystal distribution, t…
The physicochemical properties of stimuli-responsive polymers change with physical or biological signals, such as pH, enzyme concentrations, and temperature. These polymers have attracted considerable attention in the field of drug delivery. The drug carrier system, which was revolutionized by the introduction of thes…
Diffusivities and viscosities of poly(ethylene oxide) (PEO) oligomer melts with 1 to 12 repeat units have been obtained from equilibrium molecular dynamics simulations using the TraPPE-UA force field. The simulations generated diffusion coefficients with high accuracy for all of the molar masses studied, but the stati…
A simple and efficient method to fabricate a glycosylated surface on a polyacrylonitrile-based film is described. Construction and protein adsorption processes were monitored in situ using a QCM. A PANCHEMA film was deposited on the gold surface of the quartz crystal, and the glycosylated surface was then constructed…
Abstract Polyaniline (PANI) “nanograss” was grown on carbon nanofibers (CNFs). The cure behavior of an epoxy resin with and without unmodified CNFs or PANI modified CNFs was studied by means of non‐isothermal and isothermal differential scanning calorimetry (DSC). CNFs accelerated the reaction of epoxy and diamine. PA…
Abstract In this study, we investigated the effect of an aromatic polymer, styrene–ethylene–butadiene–styrene (SEBS), on the water‐tree resistance of crosslinked polyethylene (XLPE), and the synergetic effect of SEBS and ethylene vinyl acetate (EVA) was also investigated. The XLPE/SEBS and XLPE/SEBS/EVA samples were c…