Materials Literature
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Three-dimensional (3D) supercapacitors have been demonstrated using vertically aligned carbon nanotubes (CNT) arrays and electroplated nickel nanoparticles. Two significant achievements have been demonstrated in this work: (1) a unique and reliable vacuum-assisted electroplating methodology for the uniform deposition…
Controlled sublimation of silicon on a SiC surface based on pulsed electron irradiation (PEI) is presented as an effective route to quality graphene. The PEI allows us to obtain graphene in millimetre-scale within three monolayers, and is a potential candidate for preparing high quality large graphene with controlled…
Ternary sodium borosilicide, Na(8)B(74.5)Si(17.5), was newly synthesized by heating a mixture of sodium, silicon and amorphous or crystalline boron at 1073-1273 K. The crystal structure of the black hexagonal prismatic single crystal obtained at 1273 K was analyzed. The X-ray diffraction reflections of the crystal wer…
The rich chemistry of single-walled carbon nanotubes (SWCNTs) is enhanced by substitutional doping, a process in which a single atom of the nanotube sidewall is replaced by a heteroatom. These so-called heteroatom-substituted SWCNTs (HSWCNTs) exhibit unique chemical and physical properties not observed in their corres…
Polyurethane-poly(2-hydroxyethyl methacrylate) semi-IPN-silica nanocomposites with low content (0.25 and 3 wt%) of differently functionalized 3-D fumed silica nanoparticles were studied using a combined AFM/DSC/CRS approach over the −100 to 160°C range. The pronounced heterogeneity of the PHEMA and PU glass transition…
Lithium silicates, such as $Li_2SiO_3$ and $Li_4SiO_4$, are considered as favorable candidates for the tritium breeding materials of a nuclear fusion reactor. Their bulk electronic properties and mechanics are important for the tritium behavior and tritium breeding blanket designs. We have studied the structural and e…
This paper combined experiments and simulation to investigate the grain size and cap layer effects on electromigration (EM) reliability of Cu interconnects. First the statistical distribution of EM lifetime and failure modes were examined for in laid Cu interconnects of large and small grain structures with two differ…
A series of novel "super hybrid tridentate ligands" based on (2-(1-butyl-1H-1,2,3-triazol-4-yl)-6-(1H-pyrazol-1-yl)pyridine (tpp) derivatives were synthesized. Their Fe(ii) complexes display around (T(½) = 287 K) and above room temperature (T(½)≫ 375 K) spin transition temperatures.
The secondary waste and bacterial contamination in physico-chemical and biological separation processes used today for nitrate removal from ground water make novel catalytic technologies that convert nitrates to unharmful gaseous nitrogen, very attractive for scientific research. The Mg-Cu-Al layered double hydroxide…
Highly crystalline rutile with a specific surface area as high as 280 m(2) g(-1) and well-connected uniform mesoporosity has been synthesized by rigid templating using commercial, low-cost polyether block amide. This general, simple synthesis route for high surface-area mesoporous nanocrystalline oxides and nanocompos…
In this work, the first direct measurement of inter and intra-layer molecular self-diffusion in the smectic phases of a chiral smectogen (S)-2-methylbutyl-[4′-(4″-heptyloxyphenyl)-benzoyl-4-oxy-(S)-2-((S)-2′)-benzoyl)-propionyl)]-propionate (ZLL7/*) by means of pulsed field gradient NMR is reported. Self-diffusion coe…
Transparent conducting gallium-doped ZnO films are deposited on glass substrates by magnetron sputtering of conducting ceramic targets. The dependences of structural, electric, and optical characteristics of ZnO:Ga films on the substrate temperature are investigated during the deposition. Stability of resistivity of f…
The solvent effects were studied in fluorescence resonance energy transfer (FRET) from a cationic polyfluorene copolymer (FHQ, FPQ) to a fluorescein (Fl)-labelled oligonucleotide (ssDNA-Fl). Upon addition of dimethyl sulfoxide (DMSO), the optical properties of polymers and the probe dye were substantially modified and…
Yellow light-emitting -doped phosphors with compositions of were successfully prepared by spark plasma sintering (SPS), and their luminescence properties were investigated. The phosphors absorbed in the UV–blue visible light region and showed a strong yellow-orange emission band centered at 565 nm. The influences of C…
The effects of operational parameters upon the hydroxyl radical generation of sonochemical reactors are critical to optimize this technology for wastewater treatment purposes. Ultrasonic wave characteristics are usually considered as the main parameter to be taken into account. Nevertheless, it is the interaction of t…
Various zeolites have been synthesized from coal fly ash (FA) by hydrothermal treatment with NaOH solution. Phillipsite-type zeolite was synthesized selectively from FA (FA-phillipsite), and succeeded in in situ combining the FA-phillipsite with sepiolite to form FA-phillipsite/sepiolite composite. The adsorption beha…
In this article, we report a novel high performance nanocomposite made from environmentally friendly and energy conserving solventless photocurable patternable resin system. The system contains a fluoroimide acrylate oligomer, acrylate monomer, photoinitiator and SiO2 nanoparticles. The fluoroimide acrylate oligomer w…
In this study, we characterized the heat shock stimulon of the important industrial microorganism Bacillus licheniformis using DNA microarrays. While sharing a high degree of homology with the closely related model organism Bacillus subtilis, the heat shock stimulon of B. licheniformis exhibited several novel and unex…
In this work, the effects of thermal ageing on mechanical properties of JLF-1 and CLAM steels have been studied at temperatures in a range of 823-973 K. The results showed that the hardness increased slightly and the creep properties improved after ageing at 823 K for 2000 h for the both steels. On the other hand, the…
The first example for electrogeneration of a Pt(IV) porphyrin from its Pt(II) form is presented and the Pt(II/IV) and reverse Pt(IV/II) oxidation-reduction processes are elucidated by electrochemistry and thin-layer UV-visible spectroelectrochemistry. Three products, [(TPP˙(+))Pt(II)](+), [(TPP)Pt(IV)](2+) and [(TPP˙(…