Materials Literature
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A general least-squares technique for X-ray diffraction line broadening analysis has been developed. The technique can be used to determine single, double, and triple line broadening effects caused by small particle sizes, microstrain, stacking faults, or all three presented in a closed-packed hexagonal nanomaterial.…
We have recently shown that the sound velocity obtained from the inelastic x-ray scattering (IXS) measurement exceeds the ultrasonic wave velocity of a Pd-based metallic glass in a rigid glass state far below its glass transition temperature. Here we report that no obvious evidence of faster processes, which are suppo…
K-feldspars in the system K[AlSi 3 O 8 ]–K[FeSi 3 O 8 ] were synthesized hydrothermally at P H 2 O = 1 kbar and T = 400 °C, 500 °C, and 600 °C to investigate their ordering behaviour, the extent of Al, Fe substitution, and the influence of oxygen fugacities on the run products (Ni–NiO compared to Cu–Cu 2 O buffer cond…
Based on surface plasmon resonant enhancement, a method to realize photolithography beyond diffraction limit by using polystyrene spheres (PSs) self-assembled on silver slab was proposed in this paper. The optimum parameters for PS with different diameters were presented. In order to verify this method, numerical simu…
The magnetic susceptibility of NdCo1 − x Ga x O3 (x = 0, 0.1, 0.3, 0.5, 0.7, 0.8, 0.9, 1) has been measured at temperatures from 80 to 950 K. The effective magnetic moments (μeff) due to the magnetic moments of the Co3+ and Nd3+ ions have been determined in the temperature ranges of Curie-Weiss behavior, 130–370 and 6…
Magnetisches Netzwerk: Ein 2:1-System aus [Ru2II,IIL4]-Schaufelradkomplexen und BDTA-TCNQ ergibt einen neuen Strukturtyp von Elektronentransfersystemen mit einem dreidimensionalen Netzwerk. Die Struktur zeigt einen langreichweitigen ferromagnetischen Übergang bei Tc=107 K (siehe χ-T-Kurve und Blick entlang der a-Achse…
Microbatch crystallization under oil is a powerful procedure for obtaining protein crystals. Using this method, aqueous protein solutions are dispensed under liquid oil, and water evaporates through the layer of oil, with a concomitant increase in the concentrations of both protein and precipitant until the nucleation…
Ion association in aqueous solutions of scandium sulfate has been investigated at 25 degrees C and at concentrations from 0.01 to 0.8 M by broadband dielectric spectroscopy over the frequency range 0.2 <or= nu/GHz <or= 89. Detailed analysis of the spectra reveals the presence of both inner- and outer-sphere 1:1 [ScSO…
In order to quantify the effect of temperature on the mechanical properties of pure nylon 6 and its composite with cellulose fibers (containing 25 wt% cellulose fibers), the materials were sampled and tested at three representative temperatures of 256, 296, and 336 K. Flexural and tensile tests were performed and the…
A simple relationship allows pH versus solubility plots for molecular salts to be calculated from known p K ʼs together with one measurement of solubility and the pH of the corresponding supersaturated solution. Using this methodology the solubility of a series of salts may be properly compared and judged against that…
The physicochemical properties of (1 − x)CsH2PO4/xSiP y O z (x = 0.2–0.7) composites containing fine-particle silicon phosphates as heterogeneous additives have been studied at different humidities. The introduction of silicon phosphates suppresses the superionic phase transition of CsH2PO4 and increases the low-tempe…
A Comment on the Letter by A. L. Vázquez de Parga et al., Phys. Rev. Lett. 100, 056807 (2008). The authors of the Letter offer a Reply.Received 11 April 2008DOI:https://doi.org/10.1103/PhysRevLett.101.099703©2008 American Physical Society
The monoprotection (desymmetrization) of diamondoid, benzylic, and ethynyl diols has been achieved using fluorinated alcohols such as 2,2,2-trifluoroethanol (TFE) under acidic conditions. This practical acid-catalyzed S(N)1 reaction opens the door for the synthesis of novel bifunctional diamondoids. With diamantane as…
The X-ray diffractions of cobalt nanoparticles synthesized by a microfluidic reactor process at low temperature suggest glasslike phases with only one broad peak. An X-ray absorption fine-structure (XAFS) technique is used to investigate fine crystal phase transition or changes in atomic arrangement and interatom spac…
The phase transition characteristics and device performance of Si-doped Ge 2 Sb 2 Te 5 thin films were studied for PRAM application. Si-doped Ge 2 Sb 2 Te 5 thin films were deposited by the RF-magnetron cosputtering system and phase transition characteristics were analyzed by x-ray diffractometer (XRD), 4-point probe…
We demonstrate strong evidence of shape-dependent efficient resonance energy transfer between CdS quantum dots (QDs) and quantum rods (QRs) (donor) to Nile Red dye (acceptor). We also report a simple solution-based method for the preparation of high quality CdS QDs and CdS QRs at relatively low temperature. The observ…
Acoustic emission (AE) signals generated by transgranular stress corrosion cracking (TGSCC) and intergranular stress corrosion cracking (IGSCC) have been compared by means of slow strain rate tensile tests (SSRT) performed using both solubilised and sensitised type AISI 304 stainless steel in a 1 M NaCl + 1 M HCl solu…
The excellent structural and optical properties of pseudomorphic Mg x Zn 1- x O films (0≤ x ≤0.39) are reported in this work. The Mg x Zn 1- x O films were grown on Zn-polar ZnO substrates by plasma-assisted molecular beam epitaxy. Those Mg x Zn 1- x O films for which x ≤0.18 exhibited atomically flat surfaces, and th…
The hydrolytic stability and the effect of annealing on the improved aging properties of self-assembled monolayer (SAM) hydrophobic coatings have been investigated. Surfaces coated with hydrophobic SAM coatings give higher flow rate and are of wide interest to researchers in the area of microfluidics. Hydrophobic SAM…
ADVERTISEMENT RETURN TO ISSUEPREVCommunication to the...Communication to the EditorNEXTADDITION / CORRECTIONThis article has been corrected. View the notice.A Facile Method for Fabrication of Ordered Porous Polymer FilmsBo You†, Lei Shi‡, Nangeng Wen†, Xiaohan Liu‡, Limin Wu*†‡, and Jian Zi‡View Author Information Dep…