Materials Literature
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The combination of breath figure templating to produce macro pores and surfactant self-assembly to induce micro-phase separation at the nanometre length scale are demonstrated for obtaining macro-mesoporous silica or mixed-oxide films. Control of the humidity or temperature was not necessary, and simple coating techni…
Barium titanate films grown under a -rich atmosphere display a high dielectric constant and therefore can be employed as electrolytes in the all-solid-state supercapacitors. This behavior was attributed to the accumulation of protons at the metal–electrolyte interface over a Debye length (capacitive double layer). Ele…
Due to their exceptional properties, large amounts of single-walled carbon nanotubes (SWCNTs) have been increasingly used in a wide range of applications, and consequently, the economical production of high quality SWCNT is becoming a matter of major concerns. For this reason, carbon black is getting increasingly popu…
We performed the electrical resistivity measurements under high pressures up to 16 GPa for FeTe0.92. The compound has a structure analogous to iron-based superconductor of FeSex, but does not show superconductivity. It exhibits a structural transition and an antiferromagnetic (AFM) transition. It is expected that if t…
A magnetic quantum dot (MQD) based cellular nanoprobe, composed of a magnetic oxide nanoparticle component and a quantum dot component, has been synthesized and used for both imaging and separation. The successful synthesis is based on a reverse micelle based polyacrylate coating in the presence of component nanoparti…
The efficacy of hydroxyapatite (HAp) nanocoating on polyester vascular grafts was investigated in animal experiments. The HAp nanocrystals were covalently bonded separately between hydroxyl groups on a nanocrystal and alkoxysilyl groups in gamma-methacryloxypropyl triethoxysilane graft polymerized on a polyester subst…
Hexagonally ordered Ni nanocones and films possessing a cone geometry were produced using anodization and metal plating techniques. The conical porous anodic alumina (PAA) film was produced using a process of repeated applications of anodization and pore-widening steps, applying the two steps alternately. The structur…
Multiwalled carbon nanotubes filled with MgO nanorods were synthesized through the reaction of ethanol and Mg powder in the presence of TiO 2 at 400 ° C. X‐ray powder diffraction indicated that the sample was composed of graphite and cubic MgO. Transmission electron microscopy studies showed that multi‐walled CNTs wit…
We report on the pretilt angles of liquid crystals (LCs) at a low baking temperature (120°) and on the retardation values with a high birefringence and low cell gap, both of which showed significant improvement in their response time for flexible super twisted nematic cells. Three different types of polyimides (PIs) w…
In order to clarify the origin of magnetoelectric (ME) effect in the polar ferrimagnet GaFeO 3 , we have conducted Mössbauer spectroscopy by using a stoichiometric single crystal. The spectra are composed of three subspectra, corresponding to Fe 3+ ions on Fe1, Fe2, and Ga2 sites. The quadrupole splitting ( QS ) of Fe…
A novel approach of combining nonmagnetic shape memory alloy (SMA) microactuators with electroplated magnetic layers (ML) is presented, which enables the use of two intrinsic actuation principles in a single SMA-ML component allowing considerable gain in functionality. In the present work, we demonstrate local electro…
The possibility of pressure-induced leaching of vitamin E from inside of vitamin E-blended ultrahigh molecular weight polyethylene (UHMWPE) was investigated. UHMWPE specimens were pressed against a base plate, and leached vitamin E was dissolved in ethanol. The quantification of vitamin E in ethanol was carried out by…
A new bifunctional tetrathiafulvalene (TTF) derivative has been designed and synthesized, in which the TTF moiety (a redox functional group) is integrated with a dioxotetraamine (a coordination functional group) structure. Like other dioxotetraamine compounds, it is capable of acting as an ion leaving and accepting li…
In this paper, we demonstrate a novel and direct synthesis of hexagonal-shaped zinc oxide (ZnO) nanorods at very low temperature of ~ 80oC simply by using metallic zinc foil and de-ionized (DI) water with few drops of ethanol. The formation of ZnO structures by the reaction of metals with DI water is suggested to occu…
Ablation experiments of SiC were performed in air plasma freejets at an atmospheric pressure to investigate its ablation properties, weight loss and weight loss rate. The heat flux and temperature were adjusted by changing distance of a test piece from a nozzle exit. The properties of carbonaceous materials were also…
The complete (14)N nuclear quadrupole resonance spectrum has been measured in ferroelectric (H(2)-TPPZ)(Hca)(2) using nuclear quadrupole double resonance. The quadrupole coupling tensors are assigned to various nitrogen positions in the crystal structure. Two types of asymmetric N-H(+)...N hydrogen bonds are observed…
The carbothermal reduction and nitridation (CRN) reactivity of alumina (Al2O3) to aluminum nitride (AlN) under a flow of nitrogen was investigated for transition aluminas (γ- and δ-Al2O3) and α-Al2O3 with the same particle size and mixing homogeneity with carbon. The aluminas were obtained by calcining a (hydroxo)(suc…
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Results of investigation of the temperature dependence of magnetization of Ni2.08Mn0.96Ga0.96 alloy in the magnetic fields of various intensities are reported. An abrupt change in magnetization at transformation of low temperature phase to the high temperature one is observed. Magnetization increases during the phase…
The major obstacle in transition to the hydrogen economy is the problem of onboard hydrogen storage. Solid-state hydrogen storage is the safest and most efficient method for hydrogen storage. Most of the metal hydrides exhibit very large volumetric storage density but less than 5 wt % gravimetric hydrogen density. Lig…