Dissolution of small diameter single-wall carbon nanotubes in organic solvents?
The solubility of small diameter single-wall carbon nanotubes in several organic solvents is described, and characterization in 1,2-dichlorobenzene is reported.
Materials Literature
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Unique acid catalysis of heteropoly compounds (heteropolyoxometalates) in the solid state
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…
High-Chromium Ferritic and Martensitic Steels for Nuclear Applications
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…
Calculation of losses in ferro- and ferrimagnetic materials based on the modified Steinmetz equation
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…
In Situ X-Ray Diffraction Study of P2-Na[sub 2/3][Ni[sub 1/3]Mn[sub 2/3]]O[sub 2]
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…
Polymerization of lactide and related cyclic esters by discrete metal complexes
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…
Magnesium Alloys and their Applications
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,…
Dendrimers and other dendritic polymers
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
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…
Organic photochromism (IUPAC Technical Report)
Abstract This technical report is a general introduction to organic photochromism. The definition of photochromism (PC) is given together with that of words with the ending "chromism", such as thermo-, electro-, piezo-, and tribochromism. Important concepts such as two-photon, gated, dual-mode PC and chirochromism are…
Biodegradable polymeric scaffolds for musculoskeletal tissue engineering
Biodegradable scaffolds have played an important role in a number of tissue engineering attempts over the past decade. The goal of this review article is to provide a brief overview of some of the important issues related to scaffolds fabricated from synthetic biodegradable polymers. Various types of such materials ar…
Colloidal synthesis of nanocrystals and nanocrystal superlattices
This paper provides an overview of the synthetic techniques used to prepare colloidal nanocrystals (NCs) of controlled composition, size, shape, and internal structure and the methods for manipulation of these materials into ordered NC assemblies (superlattices). High-temperature solution-phase synthesis (100–300°C) i…
Corrosion Inhibitors—Correlation Between Electronic Structure and Efficiency
Corrosion inhibition efficiencies of heterocyclic, unsaturated (aromatic and nonaromatic) compounds (pyrimidines, benzothiazole derivatives, amino acids containing an aromatic part, pyridines, and quinolines) were correlated with quantum chemical indices of the respective molecules. Inhibition efficiencies were determ…
Surface modifications of natural fibers and performance of the resulting biocomposites: An overview
A review of biocomposites highlighting recent studies and developments in natural fibers, bio-polymers, and various surface modifications of natural fibers to improve fiber-matrix adhesion is presented. One of the most important factors which determine the final performance of the composite materials is the quality of…
Rapidly Solidified Powder Metallurgy Mg<SUB>97</SUB>Zn<SUB>1</SUB>Y<SUB>2</SUB>Alloys with Excellent Tensile Yield Strength above 600 MPa
Nanocrystalline magnesium alloys having high tensile strength, high elevated-temperature tensile strength, high-strain-rate superplasticity and high thermal stability have been developed in Mg97Zn1Y2 (at%) alloy by rapidly solidified powder metallurgy (RS P/M) processing. The tensile yield strength and elongation that…
An Asymmetric Hybrid Nonaqueous Energy Storage Cell
A nonaqueous asymmetric electrochemical cell technology is presented where the positive electrode stores charge through a reversible nonfaradaic or pseudocapacitive reaction of anions on the surface of an activated carbon positive electrode. The negative electrode is a crystalline intercalation compound which supports…
Wet chemical synthesis of silver nanorods and nanowires of controllable aspect ratio
Using a seed-mediated growth approach in a rodlike micellar media, silver nanorods of varied aspect ratio were prepared from nearly spherical 4 nm silver nanoparticles.
Nanostructured Fibers via Electrospinning
Structured polymer fibers with diameters down to tens of nanometers are of interest for applications in filters, in composite reinforcement, or as templates for the preparation of functional nanotubes. The Figure shows fibers of poly-L-lactide produced by electrospinning from a dichloromethane solution exhibiting regu…
Aromatic interactions
Covering: 1950–2000. p
Scaffold design and fabrication technologies for engineering tissues — state of the art and future perspectives
Today, tissue engineers are attempting to engineer virtually every human tissue. Potential tissue-engineered products include cartilage, bone, heart valves, nerves, muscle, bladder, liver, etc. Tissue engineering techniques generally require the use of a porous scaffold, which serves as a three-dimensional template fo…