Materials Literature
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We have synthesized the ternary organic/inorganic/polymeric terbium hybrid material (ACAC-Si)-Tb-PVP [ACAC = acetylacetone; PVP = poly(4-vinylpyridine)]. Firstly, the ACAC was modified through the hydrogen transfer addition reaction with a cross-linking reagent 3-(triethoxysilyl)-propyl isocyanate (TEPIC) to obtain a…
We report the discovery of a novel pathway for the transformation from highly oriented pyrolytic graphite foils into amorphous diamond platelets. This pathway consists of three stages of neutron irradiation, shock compression, and rapid quenching. We obtained transparent platelets which show photoluminescence but no d…
Li3InBr6-yXy (X=F, I) was synthesized and the substitution effect on ionic conductivity was investigated. Li3InBr6-yFy was single phase at y {less than or equal to} 3. The lattice constants were decreased with F content. The conductivity of Li3InBr6-yFy was decreased with y and electrochemical stability was improved b…
Low-temperature measurements of asymmetric carbon nanotube (CNT) quantum dots are reported. The CNTs are end-contacted with one ferromagnetic and one normal-metal electrode. The measurements show a spin-dependent rectification of the current caused by the asymmetry of the device. This rectification occurs for gate vol…
The reaction of the CN radical with O(2) was studied using infrared diode laser absorption spectroscopy. Detection of NO and secondary N(2)O products was used to directly measure the product branching ratio. After consideration of possible secondary chemistry and comparison to kinetic modeling simulations, the branchi…
A comprehensive study of the effect of covalent oxygen attachment on the transmission and conductance of armchair and metallic zigzag carbon nanotubes (CNTs) is presented. In both armchair and zigzag CNTs covalent oxygen attachment favors an ether-type bond in which the C-C bond breaks. Oxygen atoms attached on the CN…
Three types of self-assembled ZnO x quantum dots (QDs) or islands on silicon substrates with distinctive morphologies were successfully synthesized using various growth schemes in a simple magnetron sputter. If hydrogen/argon was employed as the sputtering gas under negative substrate bias, the growth started from sur…
Abstract The complete stereocomplexes without single crystals were obtained from a commercial grade poly( L ‐lactide) (PLLA) and the sufficient low molecular weight poly( D ‐lactide) (PDLA). These poly(lactide) (PLA) stereocomplex were crosslinked with triallyl isocyanurate (TAIC) by electron beam irradiation for impr…
The space group of the crystals of derivatives of 2,3-dialkoxyanthracenes is monoclinic P2(1)/a (herringbone structure) with the linear ethyl or propyl chains but abruptly changes to the trigonal P3 or R3 space group for butyl to heptyl chains. Strikingly, this switch is correlated with the capacity of these compounds…
Abstract BACKGROUND: The development of carbon nanotube‐reinforced composites has been impeded by the difficult dispersion of the nanotubes in polymers and the weak interaction between the nanofiller and matrices. Efficient dispersion of carbon nanotubes is essential for the formation of a functional nanotube network…
Two alloy systems were designed across the β/β+α"–phase boundary. The small addition of O and Fe was found to be very effective in stabilizing the β–phase and modifying the mechanical properties. The cold rolling effect on the mechanical properties was different between the β+α" alloys and the single β–phase alloys. T…
In this study, we perform density functional calculations to investigate the interplay between single-wall carbon nanotube (SWNT) supports and adsorbed Pt atoms. We found that adsorption of Pt atoms on SWNTs is found to depend heavily on the curvature of SWNTs. The supporting SWNTs mediate and enhance the range of int…
Cdc25B is a dual-specificity phosphatase that catalyzes the dephosphorylation of the Cdk2/CycA protein complex. This enzyme is an important regulator of the human cell cycle and has been identified as a potential anticancer target. In general, protein tyrosine phosphatases are thought to bind the dianionic form of the…
There is an emerging need for practical methods that can produce organized arrays of nanomaterials with high throughput. Particle lithography provides such an approach for rapidly preparing millions of exquisitely uniform nanometer-sized structures on flat surfaces, using basic steps of bench chemistry. Structural tem…
An overview of the international framework that supports the dissemination of the dosimetry quantities for ionizing radiation is presented. The aim of international traceability is for confidence in such measurements around the world, which is particularly important for the equivalence of patient treatment regimes as…
The dielectric properties and electrical conduction of Ba 1− x Sr x TiO 3 ( x = 0.2, 0.25, 0.3) ceramics have been investigated in the temperature range 25–400 °C and the frequency range 100 Hz–1 MHz. The broad dielectric peaks ε'( f ), tanδ( T ), tan δ( f ) and the distribution parameter β are all indicative of a typ…
An inverse template method that relies on the use of a controlled porous spacer material was implemented to produce periodic magnesium (Mg) foams. Bulk infiltration pressures were varied to determine a processing-property map. The microstructure and mechanical properties of the resulting periodic Mg foams were investi…
A ZnO/MgZnO p–n junction light-emitting diode employing a [ZnO/Mg0.1Zn0.9O] multiple quantum well active layer was fabricated on a c-plane sapphire substrate by the pulsed laser deposition technique. Phosphorous and gallium were used for p-type and n-type doping, respectively. Sapphire substrates were annealed in N2 a…
We investigated the release of octadecyl rhodamine B chloride (R 18 ) loaded onto cetyltrimethylammonium bromide (CTAB) coated gold nanorods (NR) by pulsed ultrafast laser excitation. R 18 intercalates into the hydrophobic CTAB bilayer on the NR surface and can exchange on and off the NR with free CTAB micelles in sol…
The combination of X-ray crystallography and rapid cryo-trapping methods has enabled the visualization of catalytic intermediates in a variety of enzyme systems. However, the resolution of the X-ray experiment is not always sufficient to precisely place the structure on the reaction pathway. In addition, many trapped…