Materials Literature
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Permanently charged films with a cellular or porous structure represent a new family of polymer electrets. These materials show piezoelectric properties with high piezoelectric constants. The electromechanical response equations of such films are derived for their operation as sensors and as actuators. Experimental re…
Lyotropic mineral liquid crystals—materials that are generally electron rich, thermally stable, and often inexpensive—are reviewed. Molecular wires, ribbons, and disks as well as anisotropic crystallites are examined and guidelines useful in the search for new mineral liquid-crystalline suspensions are given. The Figu…
The ability to predict or confirm ferroresonance depends primarily on the correctness of the transformer model used by the computer simulation. Ferroresonance is introduced and a general modeling approach is given. An overview of available literature and contributors to this area is provided. A simple ease of ferrores…
Cytochrome P450 is one of Nature’s oxidative workhorses and is utilized in a wide variety of roles, one of the most important being the detoxification of foreign bodies within the liver. As a result of its fundamental importance it has been extensively investigated, modeled and mimicked over the past 30 years, and mor…
Abstract The CoFe 2 O 4 nanoparticles have been synthesized by using a stable ferric salt of FeCl 3 with a micellar microemulsion method. The normal micelles are formed by sodium dodecyl sulfate (NaDS) in aqueous solutions. The mean size of the nanoparticles can be controlled from less than 4 nm to about 10 nm through…
The performance of polyaniline‐based electrochemical capacitors was evaluated under various experimental conditions. The capacitor consisted of two platinized tantalum foils coated with polyaniline as the active material, a separator, and an appropriate aqueous electrolyte solution. The polyaniline coatings were forme…
The hysteresis loop of the core material in a test current transformer is simulated using the Jiles-Atherton theory. Comparisons are made between recorded and simulated waveforms and it is found necessary to replace the modified Langevin function used by Jiles and Atherton. Using an alternative function described in t…
The scratch behaviors of a broad range of polymers are investigated to understand how the material characteristics of a polymer affect the scratch resistance. A constant load scratch test and a progressive load scratch test are chosen for the present study. A scratch model proposed by Hamilton and Goodman is applied t…
Molecular charge is one of the main determinants of transvascular transport. There are, however, no data available on the effect of molecular charge on microvascular permeability of macromolecules in solid tumours. To this end, we measured tumour microvascular permeability to different proteins having similar size but…
Phenomenological and electrochemical fundamentals of corrosion fundamentals of high temperature corrosion passivity of metals and alloys microbial corrosion environment sensitive fracture corrosive wear and erosion advanced investigation techniques cathodic and anodic protection environmentally friendly inhibitors the…
The electrochemical oxidation of and CO in a system at the interface of a porous Ni‐yttria stabilized zirconia (YSZ) cermet electrode and YSZ electrolyte has been studied using complex‐impedance spectroscopy and direct‐current polarization measurements of 1023 and 1273 K under a constant oxygen partial pressure. The p…
Rubber–clay nanocomposites were prepared by two different methods and characterized with TEM and XRD. The TEM showed clay had been dispersed to one or several layers. The XRD showed that the basal spacing in the clay was increased. It was evident that some macromolecules intercalated to the clay layer galleries. The c…
NIMR) at TU-Delft with interdisciplinary research experience in new and emerging metallic materials: bulk metallic glasses, high entropy alloys, self-healing materials, biomaterials designs, and microstructure physics, Dr. Paul Nnamchi is responsible for the metallurgical and materials academic postgraduate programs i…
Research Article| January 01, 2000 Alunite-Jarosite Crystallography, Thermodynamics, and Geochronology R. E. Stoffregen; R. E. Stoffregen AWK Consulting Engineers, Inc., 1611 Monroeville Avenue, Turtle Creek, Pennsylvania 15145 Search for other works by this author on: GSW Google Scholar C. N. Alpers; C. N. Alpers U.S…
Since its inception in 1966, the series of numbered volumes known as Semiconductors and Semimetals has distinguished itself through the careful selection of well-known authors, editors, and contributors. The Willardson and Beer series, as it is widely known, has succeeded in producing numerous landmark volumes and cha…
Radiation crosslinking of carboxymethylcellulose (CMC) with a degree of substitution (DS) from 0.7 to 2.2 was the subject of the current investigation. CMC was irradiated in solid-state and aqueous solutions at various irradiation doses. The DS and the concentration of the aqueous solution had a remarkable affect on t…
A Methodology for Solving Polymer Problems. Sampling and Sample Preparation. Microscopy of Polymers. Fourier-Transform Infrared Spectroscopic Analysis Methods for Polymers. Thermal Analysis of Polymers. Identification and Analysis of Polymers. Analysis of Blends, Copolymers and Oligomers. Identification and Analysis o…
The polymerization of racemic lactide with a racemic aluminum alkoxide catalyst is reported. Microstructural analysis of the polymer produced with 1H NMR spectroscopy revealed that an isotactic stereoblock poly(lactic acid) formed, where each enantiomerically pure block contained an average of 11 lactide monomer units…
Atomic scale computer simulation based on energy minimization techniques has been used to study excess oxygen accommodation and migration in La2NiO4 + δ. The activation energy for migration in the ac plane is predicted to be 0.29 eV, while the activation energy outside the ac plane, in the b direction is predicted to…
Preface to the Second Edition. Foreword. Acknowledgements. Table of Contents. Abbreviations. 1 Introduction. 2 Solid-State Reactions. 2.1 Reactions Between Solid Compounds. 2.1.1 Ceramic Method. 2.1.2 Carbothermal Reduction. 2.1.3 Combustion Synthesis. 2.1.4 Sintering. 2.2 Solid-Gas Reactions. 2.3 Decomposition and De…