Materials Literature
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Type I collagen-PEO fibers and non-woven fiber networks were produced by the electrospinning of a weak acid solution of purified collagen at ambient temperature and pressure. As determined by high-resolution SEM and TEM. fiber morphology was influenced by solution viscosity, conductivity, and flow rate. Uniform fibers…
The electrochemical reactivity of tailor-made CuO powders prepared according to a new low-temperature synthesis method was studied by a combination of transmission electron microscopy (TEM) and electrochemical techniques. All the processes involved during cycling were successfully identified. We show that the reductio…
The electronic structure and ground state properties of ${\mathrm{AlB}}_{2}$ type transition metal diborides ${\mathrm{TMB}}_{2}$ (TM=Sc, Ti, V, Cr, Mn, Fe, Y, Zr, Nb, Mo, Hf, Ta) have been calculated using the self consistent tight-binding linear muffin-tin orbital method. The equilibrium volume, bulk moduli ${(B}_{0…
FT-IR and Raman spectra for polycrystalline powders of silver (I, III) oxide, AgO, and silver (I) oxide, Ag2O, are reported. The vibrational spectra for each oxide are discussed in relation to its crystal structure, and were found to be consistent with factor group analysis predictions. Infrared and Raman spectroscopy…
The columnar to equiaxed transition (CET) is a microstructural transition that has to be controlled during certain solidification processes. CET models and microstructure selection maps, based on nucleation and dendritic growth models, are briefly described. Processing maps can be established by combining a CET model…
The interface between micromachined neural microelectrodes and neural tissue plays an important role in chronic in vivo recording. Electrochemical polymerization was used to optimize the surface of the metal electrode sites. Electrically conductive polymers (polypyrrole) combined with biomolecules having cell adhesion…
A number of lanthanum strontium manganate/yttria-stabilized zirconia (LSM/YSZ) composite electrodes are produced with varying composition and processing parameters. The composites are investigated using impedance spectroscopy. General trends related to the oxygen reduction process are extracted from the impedance data…
Density functional theory is used to study the adsorption of carbon monoxide, oxygen and nitrogen on various Au/Pd(111) bimetallic alloy surfaces. By varying the Au content in the surface we are able to make a clear separation into geometrical (or ensemble) effects and electronic (or ligand) effects determining the ad…
Pegylated liposomal doxorubicin (Doxil, Caelyx) is a formulation of doxorubicin in poly(ethylene glycol)-coated (stealth) liposomes with a prolonged circulation time and unique toxicity profile. We review the preclinical and clinical pharmacology as well as recent clinical data obtained in specific cancer types. Doxil…
The thermal decomposition of in a mixture (1:1 molar ratio) of ethylene carbonate (EC)/dimethyl carbonate (DMC) at 85°C is compared to the reaction between EC/DMC and gas. Both produce a brown solution and gaseous products. The reaction products from and in 1:1 EC/DMC, detected by gas chromatography, are similar. Prot…
A mechanism for distributing excess polymer surface charge is used to model the growth of multilayers of strongly charged polyelectrolytes. Two parameters are required for the semiempirical analysis: the surface, or unrestricted, charge overcompensation level, φ, which is assumed to decrease exponentially from the fil…
The solubility of small diameter single-wall carbon nanotubes in several organic solvents is described, and characterization in 1,2-dichlorobenzene is reported.
Fundamental and superior characteristics of heteropoly compounds (heteropolyoxometalates) in the solid state that make them suitable for catalyst design at the atomic/molecular levels are described, together with important principles required for the understanding and design of solid heteropoly catalysts. First, the m…
Description The desire to reduce generating costs by increasing thermal efficiency in power plants has resulted in a need for materials with improved high-temperature properties. Advanced ferritic/martensitic steels are prime candidates for such applications. Although these alloys were developed for application in nuc…
This paper discusses the influence of nonsinusoidal flux waveforms on the remagnetization losses in ferro- and ferrimagnetic materials of inductors, transformers, and electrical machines used in power electronic applications. The nonsinusoidal changes of flux originate from driving these devices by nonsinusoidal volta…
The electrochemical extraction and insertion of Na in was studied by in situ X-ray diffraction. All the original Na can be extracted from and it can be reversibly inserted again. When in the compound remains in the P2 structure. For a small amount of O2-type stacking faults are introduced into the structure. When the…
This perspective highlights recent research on the preparation of polyesters by the ring-opening polymerization of cyclic esters employing well-characterized metal complexes. Particular focus is placed on the preparation of polylactide because of environmental advantages: it is biodegradable and its feedstock, lactide…
Partial Table of Contents: ALLOY DEVELOPMENT. Development of Practical High Temperature Magnesium Casting Alloys (J. King). Creep Resistant Mg Alloy Development (K. Pettersen, et al.). New Magnesium Wrought Alloys (C. Jaschik, et al.). Phase Equilibria, Microstructure and Properties of Novel Mg-Mn- Y Alloys (A. Pisch,…
Contibutors. Series Preface. A Brief Historical Perspective (D.A. Tomalia naad J.M.J. Frecht) B>I Introduction and Progress in the Control of Macromolecular Architecture Introduction to the Dendritic State (D.A. Tomalia and J.M. Frechet) Structure Control of Linear Macromolecules (C.J. Hawker) Progress in the Branched…
Principles of Electronic Materials and Devices, Third Edition, is a greatly enhanced version of the highly successful text Principles of Electronic Materials and Devices, Second Edition. It is designed for a first course on electronic materials given in Materials Science and Engineering, Electrical Engineering, and Ph…