Materials Literature
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Piezoelectric bimorph based on k 32 mode of ternary 0.24Pb(In 1/2 Nb 1/2 )O 3 –0.46Pb(Mg 1/3 Nb 2/3 )O 3 –0.30PbTiO 3 (0.24PIN–‐0.46PMN–‐0.30PT) single crystal poled along [011] c has been fabricated and tested. The bimorph features very large electromechanical coupling factor (0.80) and very low working frequency (le…
SiC stability and recession rates were modeled in hydrogen/oxygen combustion environments for the Integrated High Payoff Rocket Propulsion Technology (IHPRPT) program. The IHPRPT program is a government and industry program to improve U.S. rocket propulsion systems. Within this program SiC-based ceramic matrix composi…
This report presents a variety of experimental studies on the polyurethane foam, BX-265. This foam is used as a close-out foam insulation on the space shuttle external tank. The purpose of this work is to provide a better understanding of the foam s behavior and to support advanced modeling efforts. The following expe…
The unique electronic properties and high surface-to-volume ratios of single-walled carbon nanotubes (SWNT) and semiconductor nanowires (NW) 1-4 make them good candidates for high sensitivity biosensors. When a charged molecule binds to such a sensor surface, it alters the carrier density5 in the sensor, resulting in…
Predicting the macroscopic response of heterogeneous materials has been the subject of extensive research in the engineering community, even more so, in the composites guild. With analytical solutions being almost impossible to obtain for such open ended problems, and numerical techniques being computationally expensi…
Lithium-ion batteries are currently widely used in electronics, electrical vehicles and other devices/machines. Along with the mounting demand for much improved performance in these developing technological fields, silicon was recognized to possess much higher energy capacity when used as an anode than graphite that i…
Metal nanoparticles exhibit, on account of their localized surface plasmon oscillations, strong tunable absorption and scattering resonances and surface-enhanced electric fields. These resonances and near-fields can be enhanced and engineered further by coupling metal nanoparticles into defined groupings or assemblies. I…
Equations (4.1) to (4.3) combine to give ∂ ∂ ′ ′ ∂ ′ ∂ ′ + ∂ ∂ ′ ′ ∂ ′ ∂ ′ + ρ ′ ∂ ′ ∂ ′ =x EI x y x x F y x x y t ( ) ( ) 0 2 (4.4) Let ′ = ′ ρ ′ = ρ ′EI x EI l x x r x( ) ( ), ( ) ( )0 0 (4.5) where EI0 is the maximum of EI, and ρ0 is the maximum of ρ. Consider a harmonic vibration with frequency ω…
The process of drug discovery and development involves many stages including drug design, in vitro studies of drug candidate metabolism, evaluation of potential toxicity of drugs and their metabolites, and determination of protein binding and in vivo pharmacokinetics (PK) with animal models. Most of these steps are ve…
Two new metal coordination polymers, {[Ni(bda)(L1)(H2O)2] ·2H2O}n (1) and {[Ni2(bda)2(bib)2]·H2O}n (2) [H2bda = benzophenone -2,4 -dicarboxylic acid, L1 = 1,4-bis (imidazol-1-yl)benzene and L2 = 1,4-bis(1-imidazol-yl)-2,5-dimethyl benzene] have been successfully synthesized and structure characterized by IR, elemental…
A 43-year-old man was struck in the left orbit with his board while surfing and sustained a 3-cm laceration above his left eyebrow. The laceration was sutured closed primarily at a local emergency room. When he presented to UCSD oculoplastics for suture removal, he complained of diplopia with upgaze and was found to h…
A44-year-old Moroccan man had sudden onset of speech disturbance, vertiginous sensation, confusion, emesis, and altered mental status. There was no history of fever, trauma, or any major systemic illness. His general and systemic examination was unremarkable. On neurological examination, the patient was oriented to ti…
Permeability of a housing material is one of the significant factors affecting the performance of Tb0.3Dy0.7Fe1.95 based magnetostrictive actuator. According to Lenz’s law the rate of flux transfer depends on permeability of housing material surrounding the terfenol-D. In this paper the co-axial coils in a free air ar…
A new Mn(II) coordination polymer with biphenyl-3,4’,5-tricarboxylate (H3bta) and 1,4-bis(imidazol-1-yl)benzene (bib) has been prepared by hydrothermal synthesis and characterized by single-crystal X-ray diffraction, IR, and EA. Compound, [Mn3(bct)2(bib)2]n, is triclinic, space group P-1 with a = 9.832(3), b = 11.663(…
CuO/Cu2O hybrid nanorod arrays are prepared on a Cu substrate by K. Rajeshwar, N. R. de Tacconi et al. (p. 2251). The procedure involves the initial thermal growth of CuO nanorods followed by controlled electrodeposition of p-type Cu2O crystallites on their walls. Photoelectrosynthesis of methanol from CO2 is conducte…
In the development of underwater sensor systems, the sensor arrays are configured for different shapes like cylindrical, rectangular and spherical depending on the requirement. The rectangular shaped box–type structure discussed here has both top and bottom ends open. Flanges stiffen the top and bottom ends, and gusse…
Thermal polymerization of a conjugated polymer is performed directly on the device electrode using solution-processable monomers. On page 3549, W. G. Skene and co-workers report that the resulting immobilized polymer is electroactive and it is reversibly switched electrotrochemically between its colored states. The po…
In this paper, we applied the potentiostatic anodisation method on the new Ti–20Nb–10Zr–5Ta alloy surface with the aim to increase its stability and bioactivity. The morphology (SEM) and composition (Raman, FT-IR) of the obtained anodisation nanolayer are studied. Also, electrochemical stability (by cyclic potentiodyn…
Gas turbines operating under fuel‐rich conditions may suffer from material degradation and metal dusting. To evaluate this cyclic exposures have been done at 700 °C during 5000 h in two synthetic environments having a carbon activity of 0.26 and above unity. It was found that the common stainless steel 304L is incapab…
UltraScan Solution Modeler (US-SOMO) computes hydrodynamic parameters and small-angle scattering data from biological macromolecular structural representations and compares them with experimental data for structural determination and validation. At XSEDE 12, a GUI integrated gateway was introduced to offload large com…