Materials Literature
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Composite materials containing amorphous Cu nanoparticles and nanocrystalline Cu2O embedded in polyaniline matrices have been prepared by a sonochemical method. These composite materials were obtained from the sonication of copper(II) acetate when aniline or 1% v/v aniline–water was used as solvent. Mechanisms for the…
We describe the synthesis and properties of a new class of lithium salts in which the anions are dicarboxylic acid derivatives of orthoborate. The single negative charge of these anions is shared by eight oxygen atoms (more accurately four oxygen atoms and four carbonyl groups), hence it is very spread out, and the co…
The use of halloysite clay as a low cost alternative to more traditional microencapsulation systems is reported. Halloysite is an alumino-silicate clay which demonstrates a predominately cylindrical geometry, uniquely characterized by a hollow core or series of voids with diameters ranging from 16-50 nm. These nanosca…
We calculate the distribution of interparticle normal forces P(F) near the glass and jamming transitions in model supercooled liquids and foams, respectively. P(F) develops a peak that appears near the glass or jamming transitions, whose height increases with decreasing temperature, decreasing shear stress and increas…
The corrosion behavior of as-cast magnesium alloys (AM50, AZ91, and AZ91Si) was investigated in a 0.1 M sodium sulfate solution at the corrosion potential using electrochemical impedance spectroscopy. Transmission electron microscopy was used to analyze the corrosion product layer, and phase shifting interferometric m…
Preface. Introduction. Fundamentals of Mechanics of Solids. Mechanics of a Unidirectional Ply. Mechanics of a Composite Layer. Mechanics of Laminates. Failure Criteria and Strength of Laminates. Environmental, Special Loading, and Manufacturing Effects. Optimal Composite Structures. Name Index. Subject Index.
Journal URL: http://www.societyofglasstechnology.org.uk/cgi-bin/open.cgi?page=journal&sessionid=85597106; http://www.ingentaconnect.com/content/sgt/pcg;
Ten zirconia powders have been characterized by XRD, FT-IR/FT-FIR and Raman skeletal spectroscopies and DR-UV electronic spectroscopy. The vibrational features of a yttria-stabilized cubic zirconia and of tetragonal, monoclinic and tetragonal + monoclinic pure zirconia mixtures have been discussed. Assignments for the…
In this study, the performance of a polyaniline (PANI) based supercapacitor where electroactive PANI films were prepared on carbon paper electrodes from a nonaqueous solution with an organic acid as the proton source was investigated. The use of nonaqueous media as electrolyte led to an increase of the electroactivity…
The individual contributions of Gadolinium and Yttrium to age hardening and high temperature strength of magnesium alloys containing both elements are investigated using alloys containing different Gd:Y mole ratios of 1:0, 3:1, 1:1, 1:3 and 0:1 with a constant Y+Gd content of 2.75 mol%. All investigated alloys exhibit…
Ni pattern electrodes with well-defined triple phase boundary (TPB) lengths were prepared in order to investigate the reaction mechanisms at solid oxide fuel cell (SOFC) anodes. The anode microstructures were stable during thermal treatment and electrochemical measurements. Electrochemical impedance spectroscopy was u…
In this article the luminescence properties of Si nanocrystals (nc) formed by plasma enhanced chemical vapor deposition and their interaction with Er ions introduced by ion implantation are investigated in detail. Si nc with different size distributions and densities were produced and all show quite intense room tempe…
A series of previously-synthesized lactic/glycolic acid polymers (PLGA) with various molar ratios of lactic to glycolic acid and various molecular weights were further studied with regard to their biodegradation behavior, and in particular, the factors affecting the biodegradation rate. The biodegradation of PLGA is a…
The availability of the structural micropores in sepiolite for the access of molecular or ionic entities is an old and controversial subject, which is revised in this work in the light of the most recent experimental data obtained in our research group. In this way evidence of the accessibility of molecules, voluminou…
A nucleation efficiency scale for isotactic poly(L-lactide) (PLLA) was obtained with self-nucleation and nonisothermal differential scanning calorimetry experiments. The maximum nucleation efficiency occurred at the highest concentration of self-nucleating sites, and the minimum efficiency occurred in the absence of t…
An expert guide to understanding and making optimum use of BSIM Used by more chip designers worldwide than any other comparable model, the Berkeley Short-Channel IGFET Model (BSIM) has, over the past few years, established itself as the de facto standard MOSFET SPICE model for circuit simulation and CMOS technology de…
A new method for the delamination of layered double hydroxides (LDHs) is described: large quantities of LDHs containing glycine are rapidly delaminated in formamide, and the translucent colloidal solutions are stable to centrifuge and long-term storage.
Chitosan films, varying in molecular weight and degree of deacetylation, were prepared by a casting technique using acetic acid as a dissolving vehicle. The physicochemical properties of the films were characterized. Both molecular weight and degree of deaceylation affected the film properties. Powder X-ray diffractio…
It is a relatively new approach to generate tissues with mammalian cells and scaffolds (temporary synthetic extracellular matrices). Many tissues, such as nerve, muscle, tendon, ligament, blood vessel, bone, and teeth, have tubular or fibrous bundle architectures and anisotropic properties. In this work, we have desig…
Microbial degradation of urea was investigated as a potential geochemical catalyst for Ca carbonate precipitation and associated solid phase capture of common groundwater contaminants (Sr, UO2, Cu) in laboratory batch experiments. Bacterial degradation of urea increased pH and promoted Ca carbonate precipitation in bo…