Materials Literature
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We report the template-guided synthesis of water-soluble chiral conducting polymer nanocomposites. This synthetic route is facile and can be carried out on a large scale easily. Synthesis of water-soluble polyaniline nanocomposites is achieved by careful control of experimental parameters such as acid concentration, i…
Recent progress in grain refinement of steels was overviewed. After energetic research works since middle 1990's including big national projects in Japan, ultrafine grained steels whose mean grain size is smaller than 1μm have been realized. There are principally two ways to obtain ultrafine grained structure in steel…
A new tetranuclear double-open dicubane complex [Ni4(mu 2-N3)4(mu 3-N3)2(N3)2(enbzpy)2].2H2O (enbzpy = [N,N-bis(pyridin-2-yl)benzylidene]ethane-1,2-diamine) has been characterised structurally and magnetostructurally.
Four biodegradable polyurethane blends were made from segmented polyurethanes that contain amino acid-based chain extender and diisocyanate groups. The soft segments of these parent polyurethanes were either polyethylene oxide (PEO) or polycaprolactone (PCL) diols. The blends were developed to investigate the effect o…
Surface properties have an enormous effect on the success or failure of a biomaterial device, thus signifying the considerable importance of and the need for adequate characterization of the biomaterial surface. Microscopy techniques used in the analysis of biomaterial surfaces include scanning electron microscopy, tr…
The synthesis of ferro- and ferri-magnetic systems with a tunable Tc and three-dimensional (3-D) ordering from molecular precursors implying transition metal ions is one of the active branches of molecular inorganic chemistry. The nature of the interactions between the transition metal ions (or transition metal ions a…
A novel solid-liquid reaction synthesis and simultaneous densification process was developed to fabricate Ti2AlC material using the stoichiometric mixture of Ti, Al and graphite powders as starting materials. This method is a one-step process for the preparation of dense poycrystalline Ti2AlC. Moreover, it provides th…
Hybrid macroporous materials with thiol functional groups attached to titania and zirconia frameworks have been prepared via colloidal crystal templating techniques for use as heavy metal ion adsorbents. Synthesis procedures are described for the preparation of thiol–metal oxide materials containing either siloxane or…
The ability to image specific molecular targets in vivo would have significant impact in allowing earlier disease detection and in tailoring molecular therapies. One of the rate-limiting steps in the development of novel compounds as reporter probes has been the lack of cell-based, biologically relevant, high throughp…
Magnetic resonance imaging (MRI) has evolved into a sophisticated, noninvasive imaging modality capable of high-resolution anatomical and functional characterization of transgenic animals. To expand the capabilities MRI, we have developed a novel MR signal amplification (MRamp) strategy based on enzyme-mediated polyme…
The hydrothermal reaction of V2O5, Cu(CH3COO)2.H2O, 1,2-diaminopropane and [N(CH3)4]OH yields the novel three-dimensional open-framework solid [(Cu(1,2-pn)2)7-(V16O38(H2O))2].4H2O constructed from the new mixed-valence [V16O38(H2O)]7- clusters interconnected through mu 2-[Cu(1,2-pn)2]2+ groups.
Potentiodynamic and potentiostatic polarization, and the rotating disk electrode technique, were used to study the anodic behavior of tungsten (W) in a broad pH range (0.5-13.5) in H 3 PO 4 / KOH buffered solution. Surface oxides were found to play a prominent role in the anodic oxidation and dissolution of tungsten.…
Stable colloidal tetrapropylammonium manganese oxide (TPA-MO) was formed by the reduction of tetrapropylammonium permanganate with 2-butanol at room temperature. Thin films of TPA-MO were prepared using the sol-gel process by dip-coating directly onto clean nickel foils followed by heat-treatment under controlled cond…
ABSTRACT: Effects of glycerol, xylitol, and sorbitol on selected physical properties of whey protein isolate (WPI) films were examined. Increasing glycerol or sorbitol content led to increases in moisture content, water vapor permeability, and % elongation; and decreases in tensile strength, elastic modulus, and glass…
Electrochemical measurements were performed on single sulfide inclusions within a microcell to study their dissolution behavior and role in the initiation of pitting corrosion of 304 stainless steel in NaCl solutions. It was found that chloride ions catalyzed inclusion dissolution and caused metastable pits, and that…
We have developed a set of interatomic pair potentials for cadmium selenide based on a form similar to the Born–Mayer model. We show that this simple form of the pair potential, which has been used to describe the properties of alkali halides in the sixfold-coordinate structure, provides a realistic description of the…
The symposium, Nanophase and Nanocomposite Materials 2, was held in Boston, MA, on December 2--5, 1996, as a part of the 1996 Materials Research Society Fall Meeting. The field of nanophase and nanocomposite materials has grown tremendously since the first symposium was held on this topic at the 1992 MRS Fall Meeting.…
Research Article| January 01, 2002 X-ray Reflectivity as a Probe of Mineral-Fluid Interfaces: A User Guide Paul A. Fenter Paul A. Fenter Environmental Research Division, Argonne National Laboratory, ER-203, Argonne, Illinois, 60439-4843, U.S.A. Search for other works by this author on: GSW Google Scholar Author and Ar…
Large-diameter-sized mesoporous carbon monoliths with bicontinuous cubic structure of Ia3d symmetry have been synthesized by using mesoporous silica monoliths as hard templates; such carbon monoliths show potential application of advanced electrodes and electrochemical double layer capacitors.
In this paper we provide a general formulation for the electromagnetic wave interaction with stratified media and then specialize to slabs of negative isotropic media. The field solutions are obtained in all regions of the stratified medium. The characteristic waves in negative isotropic media are backward waves. We d…