Materials Literature
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Mononuclear spin-crossover complex Fe(II)(L)(2) x CH(3)OH (1 x CH(3)OH) and its desolvated product 1 exhibit abrupt spin transitions around room temperature. 1 also shows a light induced excited spin state trapping (LIESST) effect and a light induced thermal hysteresis (LITH) phenomenon at low temperature.
The synthesis of Group 14 nanocrystals with controlled size dispersity and composition is an area of considerable interest due to their size-dependent optical and electronic properties, thought to enable their use in a wide range of applications such as fluorophores for biological imaging and photovoltaics. In this re…
We studied the resistivity of rare-earth permanent-magnet materials over the temperature range -40°C to +150°C. We investigated three different materials from four manufacturers, including Nd2Fe14B, SmCo5, and Sm2Co17, and measured their resistivities and temperature coefficients. We found that rare-earth permanent-ma…
Abstract. Mg-Li base alloys are the lightest metallic structural materials with a density of 1.35-1.65 g/cm3. They also possess many other advantages, such as high specific strength, high specific stiffness, et al. However, the usages of Mg-Li alloy are often limited by the insufficient properties, of which the poor s…
We investigate the dynamics of micron-scale drops pushed across a hydrophobic or superhydrophobic surface. The velocity profile across the drop varies from quadratic to linear with increasing height, indicating a crossover from a sliding to a rolling motion. We identify a mesoscopic slip capillary number which depends…
Poly(styrenesulfonic acid)-functionalized materials based on poly(styrenesulfonic acid sodium salt) incorporated via aqueous atom transfer radical polymerization (ATRP) initiated from the surface of large-pore mesoporous SBA-15 silica support have been synthesized. The inorganic–organic nature of these hybrid material…
Several reactions can contribute to the overall process of exhaust gas reforming, during which some of the engine fuel is catalytically converted mainly to H2 and CO. If the predominant reactions are endothermic, the process acts as a means of exhaust-heat recovery, and the fuel heating value is raised. When using con…
Multiresponsive reversible gels were prepared with a carboxylic azo polymer (PM6AzCOOH) in dimethyl sulfoxide (DMSO) based on formation of H-aggregation and hydrogen bonds. Due to the specifically designed molecular structure of the polymer PM6AzCOOH, the obtained gel showed multiresponse behaviours to several stimuli…
A novel fluorescence turn-on method for sensitive and selective detection of protamine was developed based on aggregation-induced emission enhancement (AIEE) characteristics of 4-(6'-carboxyl)hexyloxysalicylaldehyde azine (CHSA) induced by electrostatic interaction between protamine and CHSA(-). Under optimal conditio…
Metastable tellurides play an important role as phase-change materials in data storage media and non-vol atile RAM devices. The corresponding crystalline phases with very simple basic structures are not stable as bulk materials at ambient conditions, however, for a broad range of compositions they represent stable hig…
Achiral molecules based on a novel four-ring core with an ester linkage at the molecular bend are shown to exhibit smectic liquid crystal phases with spontaneously chiral and polar layers (SmCP phases), including their polarization splay modulated and layer undulated (PMLU) variants, B7 and B1. Additionally, these com…
Nanosized crystalline ceria (CeO2) is synthesized through a surfactant- and template-free solution precipitation-hydrothermal method. We report that pure CeO2 nanocrystals with shapes consisting of nanospheres, nanowires, and nanorods can be obtained simply by varying the anionic composition or the type of counter ion…
Most living cells derived from solid tissues require an adhering surface to live in vitro conditions. A good understanding of the relationships between the behavior of cells and the physicochemical properties of substrates such as the surface free energy, the surface polarity, the presence of functional groups and sur…
Use of a fluorescent organic molecule consisting of binaphthyl functionalized with donor-acceptor substituted stilbenes for the detection of dinitrotoluene (DNT) and trinitrotoluene (TNT) vapors and enhancement in its sensing efficiency via self-assembly assisted morphology tuning are described.
A system to recover waste heat comprised of eight thermoelectric generators (TEGs) to convert heat from the exhaust pipe of an automobile to electrical energy has been constructed. Simulations and experiments for the thermoelectric module in this system are undertaken to assess the feasibility of these applications. I…
One-dimensional (1D) La2O3 and La2O3 : Ln3+ (Ln = Ho/Yb) nanorods have been successfully synthesized at a mild condition via a facile homogenous precipitation method followed a heat treatment of their corresponding hydroxides. It can be found that the type of alkali and dosage of urea play crucial roles in the formati…
The direct synthesis of hydrogen peroxide from H(2) and O(2) has been studied using a high activity AuPd/TiO(2) catalyst. In particular, the effect of variation in the reaction conditions on the productivity of hydrogen peroxide formation is investigated in detail. The effect of H(2)/O(2) molar ratio, temperature, tot…
Changes in volume in Ge 2 Sb 2 Te 5 (GST) films due to the density change during phase transformations between amorphous and crystallized states and consequent void formations were examined. Transmission electron microscopy (TEM) was used to measure changes in volume during laser-induced crystallization for both as-de…
Preparation and Luminescence Properties of Single-Phase BaSi2O2N2 : Eu2 + , a Bluish-Green Phosphor for White Light-Emitting Diodes, Yun, Bong-Goo, Horikawa, Takashi, Hanzawa, Hiromasa, Machida, Ken-ichi
It has been shown in earlier chapters that during nonstationary nucleate boiling, a self-regulated thermal process occurs, where the surface temperature of a part to be quenched is kept above the saturation temperature. This provides an opportunity to greatly affect the martensite transformation process by either reta…