Materials Literature
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There are numerous examples where animals or plants synthesize extracellular high-performance skeletal biocomposites consisting of a matrix reinforced by fibrous biopolymers. Cellulose, the world's most abundant natural, renewable, biodegradable polymer, is a classical example of these reinforcing elements, which occu…
Recently, carbon-nanotubes (CNT) have become a main focus in the polymer nanocomposites field. In a previous study, polymer composites with good CNT dispersion were obtained using a twin-screw extruder. There was a close correlation among the following three parameters: the total shear strain [γ·t] responsible for the…
Corrosion rates of high chromium and conventional steel rebars were measured and compared by conducting two studies. One was on concrete blocks and the other was on bare steel rebars. In the former study, concrete blocks that had been made with two different steel rebars were placed in sodium chloride solutions, and a…
Artificial neural networks (ANNs), for a first time, were successfully developed for the modeling and prediction of solvent effects on rate constant of [2+2] cycloaddition reaction of diethyl azodicarboxylate with ethyl vinyl ether in various solvents with diverse chemical structures using quantitative structure-activ…
The use of an hybrid pressurized electrostatic-aerodynamic levitation furnace and procedures developed by the Japan Aerospace Exploration Agency overcame the contamination problems associated with the processing of ceramics under extreme temperature conditions. This made possible property measurements over wide temper…
During the last decade, the exploration of nanoscale device and circuitry based on molecules has gained increasing interest. In parallel with this, considerable effort is being devoted to the development of molecular photonic/electronic materials based on various porphyrin arrays. This involves light as an input/outpu…
The active role of boric acid (H 3 BO 3 ) in enhancing the Eu 2+ photoluminescence; varying persistence times and formation of several crystalline phases of calcium aluminate system is presented. The luminescence characteristics of CaAl 2 O 4 : Eu 2+ , Nd 3+ (CA) phosphor took an immense leap forward with the addition…
The influence of single-atomic-species and oxygen-related defect termination on the electronic properties of silicon nanocrystallites covered with a complete oxide shell are studied by means of density-functional theory and the local-density approximation. The oxide shell is analyzed in more detail to study the influe…
Adsorption characteristics of cross-linked lysozyme crystals of different morphologies (tetragonal, orthorhombic, triclinic and monoclinic) were examined using four anionic dyes (fluorescein, eosin, erythrosin, and rose bengal), one zwitterionic dye (rhodamine B), and one cationic dye (rhodamine 6G). The adsorption is…
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation Susana García-Martín, Ainhoa Morata-Orrantia, Myriam H. Aguirre, Miguel Á. Alario-Franco; Giant b…
Abstract Novel polyurethane insulating coatings were prepared from the reaction of glycerin‐terminated polyurethane prepolymers (GPUPs) and a blocked isocyanate curing agent (BIC). The GPUPs were prepared from the reaction of one equivalent of polycaprolactone polyol (CAPA 210) with an excess amount of 4,4′‐methylene…
The surface properties of silica particles significantly influence their efficiency in particle-assisted wetting. A series of small particles of controlled surface hydrophobicity was mixed with a nonvolatile oil. These mixtures were applied onto a water surface; the structures formed were subsequently solidified by ph…
Abstract A new formalism allowing solution of the differential equations for kinetic systems comprising three species (ABC) linked by first‐order thermal and/or photochemical reactions is proposed. The approach is developed specifically with photochromic materials in mind, but the formalism developed is shown to be ap…
ADVERTISEMENT RETURN TO ISSUEPREVNoteNEXTThermally Induced Helical Conformational Change in Poly(aryl isocyanide)s with Optically Active Ester GroupsFumie Takei, Kiyotaka Onitsuka, and Shigetoshi TakahashiView Author Information The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibar…
Single-walled carbon nanotubes (SWNTs) are a new class of highly promising nanomaterials for future nano-electronics. Here, we present an initial investigation of the feasibility of using SWNT field effect transistors (SWNT-FETs) formed on silicon-oxide substrates and suspended FETs for radiation dosimetry application…
X-ray diffraction and density measurements have been simultaneously performed to investigate the atomic structure of molten silicon in a wide temperature range including the undercooling region by using the electromagnetic levitation technique. The density was obtained from the mass and the shape of a levitated sample…
Various contributions are distinguished in the experimentally detected dielectric response of organic semiconductor copper phthalocyanine. While a giant dielectric constant of virgin samples is shown to be due to extrinsic effects, the temperature dependence of the intrinsic dielectric constant, being of the order of…
Piezoelectric ultrasonic transducers are often used in well known applications such as ultrasonic cutting or cleaning processes. A novel application is the utilization of transducers in ultrasonic standing wave atomizers. Here, the transducers produce an ultrasonic field resulting in high alternating excess pressures,…
A novel synthesis method was introduced for the nanocomposites of cadmium sulfide and montmorillonite. This method features the combination of an ion exchange process and an in situ hydrothermal decomposition process of a complex precursor, which is simple in contrast to the conventional synthesis methods that compris…
Two facilities for the complete noninvasive measurement of the electrical resistivity of liquid metals above the melting temperature and in the undercooled liquid state below the melting temperature are presented: a ground-based facility that was built up in our laboratory and the microgravity facility TEMPUS. Both fa…