Materials Literature
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Positron lifetime (PL) and coincidence Doppler broadening spectroscopic (CDBS) experiments were carried out on BiFeO 3 samples doped with Pr(in place of Bi) in concentrations ( x ) = 0, 0.05, ..., 0.35. In the initial stages of doping, the existing Bi 3+ vacancies are occupied by Pr 3+ ions and positron trapping is re…
A typical giant magnetostrictive actuator (GMA) expands a magnetostrictive rod to generate strain by varying the current in the coil that surrounds the magnetostrictive rod. The heat generated by the current deteriorates the GMA performance. In particular, a constant current in the coil is required to produce the desi…
We investigate the propagation of electron wavepackets in single-walled carbon nanotubes via a Lindblad-based density-matrix approach that enables us to account for both dissipation and decoherence effects induced by various phonon modes. We show that, while in semiconducting nanotubes the wavepacket experiences the t…
In this paper, vertical ZnO nanosheets are synthesized on Si substrate using a simple solution-based method at room temperature to realize a field emission device. The thin nanosheets that were perpendicular to the Si substrate surface were mutually interwoven into net and formed a continuous nanosheet film, with a un…
We investigated self-assembled structures and aggregation mechanisms of tetraphenylethene ( TPE ) derivatives in a THF/water mixtures using time-resolved spectroscopic measurements and theoretical calculations. The TPE derivatives, with nonpolar aromatic core and nonpolar exterior dodecyl chains, form unidirectional o…
Abstract Blends of natural rubber ( NR ) and synthetic rubbers are widely used in the rubber industry to meet specific performance requirements. Further, the emerging field of organomodified clay/rubber nanocomposites could provide a host of novel materials having a unique combination of properties to meet various str…
Correlation of rheological response with microstructure and also the tensile mechanical properties of nanoclay-filled polyethylene/ethylene vinyl acetate blends were studied. From transmission electron microscopy observations, the same clay localization within polyethylene- and ethylene vinyl acetate-rich blends was r…
The influence of Lewis base (σ complex) amine-ether and ether-type polar modifiers on the microstructure of polybutadiene obtained by anionic polymerization was studied. Analysis of FT-IR-ATR, 1H, and 13C NMR spectral data for polybutadienes obtained in the presence of the complexing agents showed that increase of con…
We report graphene/ferroelectric/graphene hybrid structure to demonstrate an asymmetrical doping in two graphene layers, one side with electrons and another side with holes. Two ferroelectrics, a poly(vinylidenefluoride) (PVDF) and a hydrofluorinated graphene, were used to demonstrate the concept with density function…
In the present paper, micro-grooved Ti 3 SiC 2 surfaces with different roughness were fabricated by pulsed laser processing. The surface topography and chemical composition of smooth and micro-grooved surfaces were characterised. The wetting behaviours of smooth and micro-grooved Ti 3 SiC 2 surfaces such as static con…
In this study, the roselle fiber-reinforced vinyl ester composites were prepared based on Taguchi’s L27 experimental design using hand lay-up technique. A gray-based Taguchi technique was used to optimize the process parameters with mechanical properties (multiple performance characteristics). The results also show th…
In this paper, V0.21Sb2Te3 (VST) has been proposed for phase-change memory applications. With vanadium incorporating, VST has better thermal stability than Sb2Te3 and can maintain in amorphous phase at room temperature. Two resistance steps were observed in temperature dependent resistance measurements. By real-time o…
We studied the integration of polyhydroxybutyrate/ valerate (PHBV)/polycaprolactone (PCL) biodegradable electrospun vascular grafts with organism cells and tissues Grafts were implanted into abdominal aorta of Wistar rats for twelve months. All the grafts were patent during the whole period of implantation. Twelve mon…
This Article shows that water in ethanol colloids of gold nanoparticles enhances the formation of linear clusters and, more important for applications in electronics, determines their assembly on surfaces. We show by dynamic light scattering that ethanol colloids contain mainly monomers and dimers and that wormlike su…
In situ synchrotron X-ray diffuse scattering and inelastic neutron scattering measurements from a prototype ABO3 ferroelectric single-crystal are used to elucidate how electric fields along a nonpolar direction can enhance its piezoelectric properties. The central mechanism is found to be a nanoscale ordering of B ato…
We developed a facile but efficient method to grow tiny flowers of organometallic polymers along carbon nanotubes (CNTs), allowing the combination of synthesis and threading flowers onto CNTs in one step simultaneously. This afforded a catalog of redox-active tiny flower bundles of organometallic polymers with ultrath…
We presented here a facile strategy for constructing chitosan-functionalized nanoparticles through the coordinating interaction between phenylboronic acids in poly(3-methacrylamido phenylboronic acid) and amine groups in chitosan. The formation of nanoparticles was confirmed by Fourier transform infrared spectrometer,…
The successful development of coal-based integrated gasification combined cycle (IGCC) technology requires gas turbines capable of achieving the dry low-nitrogen oxides (NOx) combustion of hydrogen-rich syngas for low emissions and high plant efficiency. Mitsubishi Hitachi Power Systems, Ltd. (MHPS) has been developin…
The effects of limited remote cathode area on crevice corrosion propagation, repassivation, and anode site reorganization were investigated on AISI 316 stainless steel (UNS S31600) in 0.6 M NaCl at 50°C. Both multiple crevice assemblies and rescaled coupled multi-electrode arrays were utilized. Potentiostatically acti…
The aim of this paper is studying the encapsulation effect of carbon nanotubes (CNTs ) on the stabilizing process of titanium dioxide molecule dimers (TiO2)2. First, a theoretical study was performed concerning the guest species that are various titanium dioxide dimers. Five structures were treated as following: i) Ci…