Materials Literature
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We theoretically study the early-stage real-time dynamics of the interlayer $\ensuremath{\sigma}$-bond formation by visible-light irradiation of graphite crystal. An electron-hole pair, generated as an interlayer charge-transfer excitation in the visible region, mostly dissipates away into the two-dimensional semimeta…
Abstract Microstructural characteristics of isotactic‐polypropylene/glass bead (iPP/GB) and iPP/wollastonite (iPP/W) composites modified with thermoplastic elastomers, poly(styrene‐ b ‐ethylene‐ co ‐butylene‐ b ‐styrene) copolymer (SEBS) and corresponding block copolymer grafted with maleic anhydride (SEBS‐ g ‐MA), we…
Magnetic nanoparticle supported aluminium isopropoxide is demonstrated as a new catalyst for the ring-opening polymerization of epsilon-caprolactone. The catalyst can be easily recovered under a magnetic field and reused, yielding poly(caprolactone) with negligible metal residue.
Abstract Pimelic acid (PA) is used as a new surface modifier for mica (MC). The effects of PA treatment on the crystallization, morphology, and mechanical properties of isotactic polypropylene (iPP)/MC composites have been investigated. FTIR analysis reveals that PA reacted with phlogopite MC, and pimelates are formed…
With finite element simulation, the time dependent thermoelectric performance of silicon nanowires (SiNWs) is studied systematically. Short response time has been observed in SiNW cooler which decreases with increasing of the number of SiNWs. Moreover, the impacts of inhomogeneous thermal conductivity distribution in…
We studied the effect of metal contact on the position of the Dirac point by means of transport measurements. To determine the sole effect of metal contact, we prepared more than 100 graphene devices following the same fabrication procedure and with a device layout that differed only in the type of metal electrode use…
The hydroisomerization of n-butane was carried out in a fixed-bed gas-flow reactor over Pt-promoted Cs2.5H0.5PW12O40 (denoted as Cs2.5). Two kinds of catalysts, a direct impregnation of Pt on Cs2.5 (denoted as Pt/Cs2.5), as well as a mechanical mixture of Pt/Al2O3 and Cs2.5 (denoted as Pt/Al2O3+Cs2.5), were used for t…
In this study, nano-SiO 2 -filled polycarbonate (PC) composites were produced by direct melt compounding in a Brabender mixer and then compression molded. The mechanical properties were characterized using tensile test, compact tension test, and dynamic mechanical thermal analysis. The results indicate that both stiff…
One of the challenges in spinning fine-count core yarns is to achieve a perfect coverage of the core, especially when the filament core comprises a large proportion of the yarn. Any uncovered parts of the core will appear on the yarn surface as periodical defects, known as the barber-pole effect. The main tool availab…
Abstract Acrylonitrile‐butadiene‐styrene (ABS)/poly(methyl meth‐acrylate) (PMMA)/nano‐calcium carbonate (nano‐CaCO 3 ) composites were prepared in a corotating twin screw extruder. Four kinds of nano‐CaCO 3 particles with different diameters and surface treatment were used in this study. The properties of the composit…
Abstract The red phosphor EuBaB 9 O 16 was prepared by the conventional solid‐state reaction method. The crystallite phase of the phosphor was observed by X‐ray diffraction (XRD) patterns. Scanning electron micrographs were obtained to study the morphologic features and the particle size of the phosphor. The photolumi…
The progression from quasi zero-dimensional (Q0D) nanoclusters to quasi one-dimensional (Q1D) nanorods, and, with increasing length, to nanowires, represents the most conceptually fundamental transition from the nanoscale to bulk-like length scales. This dimensionality crossover is particularly interesting, both scien…
A series of azomethine dimers were prepared by condensation reactions of benzaldehyde, biphenylcarboxaldehyde and 9-anthraldehyde with various aromatic diamines of varying flexibility in ethanol in the presence of tosic acid. Their chemical structures were determined by Fourier transform infrared and 1H and 13C nuclea…
A heterostructure comprised of a 2.7 nm (7 unit cell) thick layer of the metallic ferromagnet La2/3Ca1/3MnO3 and two 50 nm thick layers of the high-temperature superconductor YBa2Cu3O7 epitaxially grown on (100) SrTiO3 by pulsed-laser deposition was characterized by magnetization measurements and spherical-aberration-…
9,9-Diarylfluorene-based monomers capable of controlling the thermal properties of the corresponding polymers were synthesized. The monomers possess flexible alkylene chains linking 9,9-diarylfluorene units with diphenol, dialcohol, and diamine terminal units. All of these terminal units were synthesized from a common…
We report on x-ray absorption studies of the structure of the liquid phase of a prototypical phase-change material Ge2Sb2Te5. We demonstrate that the local structure of liquid Ge2Sb2Te5 is very similar to that of amorphous Ge2Sb2Te5. Ge atoms in the liquid phase are found to be covalently bonded suggesting a semicondu…
This chapter contains sections titled: Introduction Evaluation of Exemplary Experimental Data Hierarchy of Influences on Ceramic Wear Modified to Damage of Ceramic Armor Implications: Examples of Modified Interpretation Conclusions Appendix Acknowledgements
Two tetranuclear manganese distorted square-shaped clusters, [Mn(III)(4)(L1)(4)(mu(2)-OMe)(4)].2.5H(2)O (1) and [Mn(II)(2)Mn(III)(2)(L2)(4)(H(2)O)(2)](PF(6))(2).CHCl(3).CH(3)OH.1.5H(2)O (2) (H(2)L1 = 2-[3-(2-hydroxyphenyl)-1H-pyrazol-5-yl]-6-pyridinecarboxylic acid methyl ester; H(2)L2 = 2-[3-(2-hydroxyphenyl)-1H-pyra…
This article gives comment to a previous article entitled 'Modification of graphene properties due to electron-beam irradiation'. These articles discuss the modification of graphene properties due to electron-beam irradiation.
Abstract Poly(ethylene terephthalate) (PET)/Barite nanocomposites were prepared by direct melt compounding. The nonisothermal melt crystallization kinetics of pure PET and PET/Barite nanocomposites, containing unmodified Barite and surface‐modified Barite (SABarite), was investigated by differential scanning calorimet…