Materials Literature
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Silicon dioxide glass rods of micrometer sizes were synthesized by using surfactant–carbon nanotube co-micelles as templates. These glass rods were used as additives to reinforce inorganic ceramics. The mechanical strength of the silicon dioxide ceramic is enhanced by ∼100% in the presence of ∼6 wt% of CNTs.
Advanced finite element techniques for the simulation of materials behavior under mechanical loading are reviewed. Advantages, limitations and perspectives of different approaches are analyzed for the simulation of deformation, damage and fracture of materials taking into account their micro- and mesostructure. Develo…
A simple and predictive model is put forward explaining the experimentally observed substantial shift of the glass transition temperature, T g, of sufficiently thin polymer films. It focuses on the limit of small molecular weight, where geometrical `finite size' effects on the chain conformation can be ruled out. The…
Collagen matrices, crosslinked using N-(3-dimethylaminopropyl)-N'-ethylcarbodiimide (E) and N-hydroxysuccinimide (N), were previously developed as a substrate for endothelial cell seeding of small-diameter vascular grafts. In the present study, the biocompatibility of various EN-crosslinked collagen matrices was evalu…
ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTMultiphoton Gated Photochromic Reaction in a Diarylethene DerivativeHiroshi Miyasaka, Masataka Murakami, Akira Itaya, Dominique Guillaumont, Shinichiro Nakamura, and Masahiro IrieView Author Information Department of Polymer Science and Engineering Kyoto Institute of T…
Atomistic computer simulation methods have been employed to model the structure of the (104) surfaces of calcite (CaCO3), dolomite [CaMg(CO3)2] and magnesite (MgCO3). Our calculations show that, under anhydrous vacuum conditions, calcite undergoes the greatest degree of surface relaxation with rotation and distortion…
Monocytes and macrophages play important roles in host responses to implanted biomedical devices. Monocyte and macrophage interactions with biomaterial surfaces are thought to be mediated by adsorbed adhesive proteins such as fibrinogen and fibronectin. Non-fouling surfaces that minimize protein adsorption may therefo…
The use of porous matrices to enable damage tolerance in ceramic composites has emerged as a new paradigm in high performance materials. This paradigm obviates the need for fiber coatings for the purpose of crack deflection, thereby providing opportunities for lower cost manufacturing relative to that of conventional…
Poly(ethylene terephthalate) (PET) pellets used for production of soft drink bottles were reprocessed in a single-screw extruder and cut into pellets in five processing cycles. The reprocessed pellets were characterized by its rheological, mechanical, and thermal properties. Carboxylic end groups number concentration…
We study heat conduction in one-dimensional mass-disordered harmonic and anharmonic lattices. It is found that the thermal conductivity kappa of the disordered anharmonic lattice is finite at low temperature, whereas it diverges as kappa approximately N0.43 at high temperature. Moreover, we demonstrate that a unique n…
The optically active binaphthalene boron–dipyrromethene (BDP) conjugate 1 shows chiral discrimination towards the enantiomers of 1-phenylethylamine by distinguishable quenching rates of the BDP fluorescence.
Magnetoliposomes (MLs) were conjugated with an antibody fragment to give specificity to a tumor. The antibody fragment was cross-linked to N-(6-maleimidocaproyloxy)-dipalmitoyl phosphatidylethanolamine (EMC-DPPE) in liposomal membrane. The immobilization of the antibody fragment was optimal when the content of EMC-DPP…
The aim of this study was to generate spinel-type oxides by a continuous ultrasonic aerosol pyrolysis procedure and to evaluate the chemical and physical properties of the product powders. The ultrasonic aerosol pyrolysis process consists of three steps, which include “atomisation” of an aqeous metal nitrate solution,…
Lanthanum carbonate particles, which can be used as precursors to lanthanum oxide, have been synthesised from lanthanum nitrate and urea in the presence and absence of ultrasound irradiation. The use of ultrasound irradiation was found to have a remarkable effect on the morphology of the lanthanum carbonate particles…
Pseudomonas oleovorans GPo1 and its polyhydroxyalkanoic acid (PHA) depolymerization-minus mutant, GPo500 phaZ, residing in natural water microcosms, were utilized to asses the effect of PHA availability on survival and resistance to stress agents. The wild-type strain showed increased survival compared to the PHA depo…
The longest wave absorption band of the tetramethylthio- tetrathiafulvalene cation radical, which is usually interpreted as a π-dimer band, is shown to be the intrinsic cation radical absorption, all studied cation radicals in solution at room temperature exist as paramagnetic monomers and only tetrathiafulvelene and…
Abstract This article begins with a brief history of composite materials and discusses its characteristics. It presents an introduction to the constituents, product forms, and fabrication processes of composite materials. The article concludes with a discussion on the applications of organic-matrix, metal-matrix, and…
Amorphous hydrous ruthenium oxide/active carbon (RuO 2 .xH 2 O/C) powders were prepared by a simple procedure based on the sol-gel process. The precursor was obtained hy mixing an aqueous solution of RuCl 3 and active carhon powders at pH 7. When annealing the precursor at 150°C for 7-9.5 h, the RuO 2 .xH 2 O/C powder…
The photoelectrochemical properties of ZnO electrodes were investigated in the near-UV region. Studies were carried out on electrodes with different morphologies, porosities, and film thicknesses in order to probe the influence of these parameters on the photoelectrochemical characteristics. The highest incident photo…
Collagen-based membranous materials of various shapes (gel, film, sponge) are known to be the most promising materials in terms of facilitating the regeneration of dermal defects. In this study, dense and porous collagen membranes were fabricated using air-drying and freeze-drying processes, respectively, and the effe…