Fe-Ga alloys of appropriate Ga concentration and heat treatment show a very large enhancement in the tetragonal magnetostriction over that of pure α−Fe [λ100(Fe−Ga)∼15λ100(Fe)]. In order to gain further understand...
Fe-Ga alloys of appropriate Ga concentration and heat treatment show a very large enhancement in the tetragonal magnetostriction over that of pure α−Fe [λ100(Fe−Ga)∼15λ100(Fe)]. In order to gain further understanding of the extraordinary magnetoelastic characteristics of this system, the spin dynamics of two of these alloys, Fe1−xGax (x=0.160 and 0.225), were studied using inelastic neutron scattering techniques. The correlation of the spin-wave dispersion curve with the lattice constant and atomic radii of solute is examined for this and other Fe alloys.
Magnetic refrigeration is a revolutionary, efficient, environmentally friendly cooling technology, which is on the threshold of commercialization. The magnetic rare earth materials are utilized as the magnetic refrige...
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Magnetic refrigeration is a revolutionary, efficient, environmentally friendly cooling technology, which is on the threshold of commercialization. The magnetic rare earth materials are utilized as the magnetic refrigerants in most cooling devices, and for many cooling application the Nd2Fe14B permanent magnets are employed as the source of the magnetic field. The status of the near room temperature magnetic cooling was reviewed.
The WATERS Network (WATer and Environmental Research Systems Network) will be an integrated real-time distributed observing system which will enable academic and government scientists, engineers, educators, and practi...
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Sea shells are composed of calcium carbonate crystals interleaved with layers of viscoelastic proteins, having dense, tailored structures that yield excellent mechanical properties. Shells such as conch (Strombus giga...
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Although silicon carbide is a very good semiconductor material for the fabrication of diode detectors for use as neutron power monitors in nuclear reactors, the electrical properties of the diodes may be altered becau...
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DNA hybridization has been increasingly adopted in materialssciences due to its complementary nature of single stranded DNAs. This unique property could be potentially used in the realization of 2 dimensional (2D) ar...
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This article is a description of recent work in the development of composite sheet materials from blends of recycled high-impact polystyrene (HIPS) and high-density polyethylene (HDPE), with a view to using them as sy...
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This article is a description of recent work in the development of composite sheet materials from blends of recycled high-impact polystyrene (HIPS) and high-density polyethylene (HDPE), with a view to using them as synthetic paper for the printing trade. Four monolayer films of differing composition were characterized in terms of their physical and surface properties. They were further evaluated compared with each other and with commercial synthetic and cellulose papers, to discover relationships between CaCO 3 filler loadings, film structure and properties that could lead to improvements. In terms of their whiteness and water base inks printing properties, these sheets were generally inferior to the cellulose and synthetic papers. Notwithstanding this, in some tests they showed superior quality; thus, in offset printing, the high surface gloss, probably due to the HIPS content, made the colors brighter in some mono-oriented film samples.
On p. 2603, Tom Picraux and co‐workers report on the use of plasma excitation to strongly enhance the nucleation of Si nanowires by the vapor–liquid–solid growth method. This control allows the preferential fo...
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On p. 2603, Tom Picraux and co‐workers report on the use of plasma excitation to strongly enhance the nucleation of Si nanowires by the vapor–liquid–solid growth method. This control allows the preferential formation of very small diameter [110] oriented nanowires, as well as significant enhancements in low temperature nanowire growth.
Surface‐biofunctionalized synthetic polymer fibers composed of a fiber‐forming host polymer and an oligopeptide conjugate can be prepared from electrospinning, report Spontak and co‐workers on p. 87. The conjugate ...
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Surface‐biofunctionalized synthetic polymer fibers composed of a fiber‐forming host polymer and an oligopeptide conjugate can be prepared from electrospinning, report Spontak and co‐workers on p. 87. The conjugate consists of a polypeptide segment and a polymer block that is compatible with the host polymer. Because the more polarizable peptide segment migrates to the surface during electrospinning, peptide surface‐enrichment is achieved in a single step without further treatment.
The self-assembly of europium oxide (Eu 2 O 3 ) nanocrystals into anisotropic one dimensional europium hydroxychloride (Eu(OH) 2 Cl) nanostructures is reported. Eu 2 O 3 nanocrystals, synthesized via colloidal chemist...
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