Materials Literature
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Substitution of carbonate has long been recognized in both synthetic and natural biologically and geologically precipitated forms of hydroxylapatite. Although the predominant substitution mechanism in all of the calcium members of the apatite group formed below 100 °C is substitution of carbonate for phosphate (B-type…
A homogeneous solution of the problem of semi-infinite shear crack along the interface between a thin layer and an elastic half-plane made of a material with different properties is obtained and studied. Under the assumption that the influence of normal shear stresses can be neglected, the problem is reduced to the Ri…
In this paper, we present a new material stack for planar Hall effect bridge (PHEB) sensors and a detailed investigation of the sensitivity and noise properties of PHEB sensors made from these. The sputter deposited material stack was based on a ferromagnetic (FM) NiFe sensing layer surrounded by two layers of anti-FM…
A series of Pd/C catalysts (2–4 wt % Pd) with different particle sizes of the supported metal was prepared under varied conditions of the formation and surface deposition of the polynuclear hydroxo complexes (PHCs) of palladium(II) on powdered Sibunit carbon supports with their subsequent reduction to the metal. It wa…
Porous microspheres of glycidyl methacrylate(GMA) cross-linked with trimethylolpropane trimethacrylate (TRIM) were prepared with toluene as porogen by suspension–emulsion polymerization. In order to obtain adsorbents bearing functional groups, the porous methacrylate network was modified by subsequent reaction with py…
A full-color reflective display system with potentially unprecedented performances on brightness, color saturation, and contrast ratio is proposed. A three-layer architecture is employed to achieve maximum brightness, wherein the key components of every layer are reflective color filters based on high-contrast grating…
GaN films with reactive ion etching (RIE) induced damage were analyzed using photoluminescence (PL). We observed band-edge as well as donor-acceptor peaks with associated phonon replicas, all in agreement with previous studies. While both the control and damaged samples have their band-edge peak location change with t…
The authors present a procedure to obtain uniform, ordered arrays of Ga droplets on GaAs(001) substrates. The growth process relies on an interplay between the substrate patterning, in form of a two dimensional array of nanoholes periodically modulated obtained via local anodic oxidation, and self-assembly of Ga dropl…
In this paper, we show that perpendicular magnetic anisotropy can be achieved in polycrystalline Ni80Fe20films on MgO underlayers grown on thermally oxidized Si substrates. The perpendicular magnetic anisotropy is already present in the as-deposited films and preserved after thermal annealing. This paper points out th…
Inclusions in steel are entrapped foreign materials, which may be metallic or non-metallic; they may be distributed throughout the volume of steel strips during the rolling process and may propagate as narrow cracks in steel strips. In this paper, for inspecting inclusions in steel strips, we propose the use of magnet…
This paper presents a novel triple-permanent-magnet-excited (TPME) hybrid-flux magnetic gear (MG) that integrates a transverse-flux MG and an axial-flux MG into a single unit. Compared with its conventional counterparts, the proposed MG transmits a relatively high-torque density. When compared with the transverse-flux…
A new approach to predict the service life of critical components via study of damage precursors is emerging and is the topic of this article. To date, most service life predictions are based on measurements of damage indicators and their growth toward criticality or failure, for example, fatigue crack length and mate…
The phytosiderophore 2'-deoxymugineic acid (DMA) is exuded via the root system by all grasses (including important crop plants like rice, wheat and barley) to mobilize Fe(III) from soil and improve plant Fe nutrition, crucial for high crop yields. Elucidation of the biogeochemistry of 2'-deoxymugineic acid in the rhiz…
This paper investigates the usage of Arduino microcontroller to control closed loop of Ionic Polymer Metal Composite (IPMC) actuator response designed for compact underwater application. We demonstrate control of single IPMC actuator by PID controller using MATLAB/Simulink Arduino Input Output (ArduinoIO) support pack…
The application of fiber reinforced composites for sports instruments is introduced. The advantage of fiber reinforced composites, materials selection, products varieties, examples and status of application for sports instruments are discussed.
Spasers have been theoretically predicted and experimentally observed and promise to deliver new exciting nanophotonic and biomedical applications. Here we theoretically investigate ultrafast dynamical properties of spasers with external plasmonic feedback. We consider a spaser both as a nanoscale source and detector…
This is the first study on the co-pyrolysis of spent substrate of Pleurotus ostreatus and coal tar pitch, and the activated carbon prepared from the pyrolytic char. Thermogravimetry (TG) analysis was carried out taking spent substrate, coal tar pitch and spent substrate-coal tar pitch mixture. The activation energies…
We studied electrical conductivity and dielectric relaxation in polyvinyl alcohol/ammonium chloride and polyvinyl alcohol/ammonium acetate composite films. Infrared absorbance showed the presence of H-bonding interaction between the salt and the polymer. X-ray diffraction showed the reduction of the grain size of orde…
α-tricalcium phosphate (α-TCP), which shows higher solubility than β-TCP, is bioabsorbable and receives special attention for its ability of turning into hydroxyapatite (HAp) in a physiological condition. Problems occasionally occur as α-TCP porous body is too brittle to be handled. Compressive strengths of β-TCP and…
The interatomic interaction and chemical state of elements in amorphous multilayered (Co 45 Fe 45 Zr 10 / a -Si) 40 and (Co 45 Fe 45 Zr 10 /SiO 2 ) 32 nanostructures with different interlayers have been investigated by X-ray photoelectron spectroscopy using synchrotron radiation. The results of X-ray photoelectron spe…