Materials Literature
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BACKGROUND: We have developed magnetite cationic liposomes (MCLs) and applied them as a mediator of local hyperthermia. MCLs can generate heat under an alternating magnetic field (AMF). In this study, the in vivo effect of hyperthermia mediated by MCLs was examined using 7,12-dimethylbenz(a)anthracene (DMBA)-induced r…
With the ongoing miniaturization of structures and devices down to the nanometer scale, we notice concomitant escalation of atoms located at surfaces or interfaces. Presence of surfaces and interfaces generates stresses in nanoscale structures that can easily exceed 1GPa. We developed and applied a method for measurin…
Abstract Doped polyaniline in its emeraldine salt form (PANI‐ES) were successfully prepared by in situ chemical oxidative polymerization using various concentrations of sodium dodecyl sulfate (SDS) micellar solutions. Structural analysis using field‐emission scanning electron microscopy and high‐resolution transmissio…
Time‐dependent, two‐dimensional, electrothermal simulations based on random Voronoi networks have been developed to study the internal heating, current distributions and breakdown effects in ZnO varistors in response to high‐voltage pulsing. The simulations allow for dynamic predictions of internal failures and to tra…
Li/Ta‐codoped lead‐free (Na,K)NbO 3 ceramics with a nominal composition of [(Na 0.535 K 0.480 ) 0.942 Li 0.058 ](Nb 0.90 Ta 0.10 )O 3 were synthesized normally at 1070°–1100°C. The XRD patterns of all samples show a single pervoskite structure with tetragonal symmetry. Although MPB separating the orthorhombic and tetr…
Abstract Master batches with four different kinds of functionalized multiwall carbon nanotubes (MWCTs) were prepared through the mixing of MWCTs with poly(ethylene terephthalate) (PET) (0.01 : 0.99 w/w) in trifluoroacetic acid/dichloromethane mixed solvents (0.7 : 0.3 v/v) followed by the removal of the solvents in th…
Electrical transport properties of heteroepitaxial p-n junctions made of La0.8Sr0.2CoO3 and SrTi0.99Nb0.01O3 were studied. Junctions display highly rectifying current-voltage characteristics over a wide temperature range (20–300K). Two distinct transport mechanisms are identified: tunneling assisted by interface state…
The present work reported the effect of addition of ZrO 2 on the microstructure and mechanical properties of ZrB 2 ‐based ceramic composites by means of hot‐pressed sintering. Observation of microstructure and systematic testing results of mechanical properties were carried out. Through X‐ray diffraction analysis and…
Soft x-ray resonant powder diffraction has been performed at the Mn ${L}_{2,3}$ edges of A-site-ordered ${\mathrm{SmBaMn}}_{2}{\mathrm{O}}_{6}$. The energy and polarization dependences of the (1/4 1/4 0) reflection provide direct evidence for a $({x}^{2}\ensuremath{-}{z}^{2})∕({y}^{2}\ensuremath{-}{z}^{2})$-type orbit…
The grain boundary groove shapes for equilibrated solid aminomethylpropanediol, 2-amino-2 methyl-1.3 propanediol (AMPD) with its melt were directly observed by using a horizontal temperature gradient stage. From the observed grain boundary groove shapes, the Gibbs–Thomson coefficient (Γ), solid–liquid interfacial ener…
Near-infrared-ultraviolet optical properties of BaCoxTi1−xO3 (BCT) (x from 1.0% to 10%) films have been investigated by the transmittance spectra. The dispersion functions in the photon energy range of 1.24–6.2eV have been extracted by fitting the experimental data with Adachi’s model. It was found that the oscillator…
Dendritic hydrosilated network with exceptional thermo-oxidative stability containing POSS and carborane nanoclusters was synthesized from octasilane-POSS (1) and vinyl-terminated carboranylenesiloxane (2). A variant of the product, containing additional structurally reinforcing SiOSi bonds, was formed by the conc…
Abstract Plasma‐activated biaxially oriented polypropylene (BOPP) films and paper substrate have been coated with functional chitosan solutions. Plasma treatment increased the amount of surface peroxide groups and carboxyl groups on the BOPP films. As a result of plasma activation, the surface energy increased from 30…
A KrF pulsed excimer laser (248 nm) was utilized to crystallize sputtered La‐modified Pb(Zr,Ti)O 3 (3:30:70) (PLZT) films on LaNiO 3 ‐coated silicon substrates. The film surface was irradiated with defocused laser pulses in an oxygen ambient at various substrate temperatures. Polycrystalline, phase pure perovskite PLZ…
Wet‐jet‐milled alumina slurries exhibited distinctly different stability behavior compared with ball‐milled ones in terms of reflocculent efficiency and rheological properties. The distinction was attributed to the different behavior of the same dispersant (NH 4 + salt of poly(acrylic acid); PAA–NH 4 + ) in ball milli…
Ultrafine ZrB 2 –SiC composite powders have been synthesized in situ using carbothermal reduction reactions via the sol–gel method at 1500°C for 1 h. The powders synthesized had a relatively smaller average crystallite size (<200 nm), a larger specific surface area (∼20 m 2 /g), and a lower oxygen content (∼1.0 wt…
Abstract Polyurethane (PU) nanocomposites were prepared through conventional and in situ methods with multiwalled carbon nanotubes (MWNTs) functionalized with poly(ϵ‐caprolactone). The thermal degradation and stability of PU–MWNT nanocomposites were investigated with nonisothermal thermogravimetry and were explained i…
Abstract The thermal degradation behavior of meta- and para-aramid fibers (PMIA and PPTA) in different atmospheres was studied by thermogravimetric analysis coupled with mass spectrometry (TGA-DTA/MS). The process of mass loss in the degradation of PMIA was divided into three steps in both argon and air. The mass loss…
Abstract Rigid monoliths were prepared from concentrated oil in water (O/W) emulsions by a base‐catalyzed polycondensation reaction of 2‐nitroresorcinol with cyanuric chloride. Mercury intrusion/extrusion porosimetry confirmed that the obtained monoliths were porous with an open porosity. However, scanning electron mi…
The authors have studied the substrate-induced strain effect in La0.875Ba0.125MnO3 (LBMO) thin films grown on ferroelectric 0.67Pb(Mg1∕3Nb2∕3)O3–0.33PbTiO3 (PMN-PT) single-crystal substrates. Both the strain and resistance of the films can be in situ varied by applying an electric field across the PMN-PT substrates. X…