Materials Literature
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Graphene nanoribbons (GNRs) are considered as a prospective interconnect material. A comprehensive conductance and delay analysis of GNR interconnects is presented in this paper. Using a simple tight-binding model and the linear response Landauer formula, the conductance model of GNR is derived. Several GNR structures…
This work focuses on characterizing the structural and surface properties of Ti X Ce 1- X O 2 (TiO 2 −CeO 2 ) mixed oxides using XRD, XPS, BET, H 2 -TPR, and NH 3 -TPD techniques. The Ti X Ce 1- X O 2 mixed oxides synthesized by the urea coprecipitation method showed unimodal nanoporous structure with pore sizes incre…
In this study, we report an inexpensive, massively scalable, fast, and facile method for preparation of graphene oxide and reduced graphene oxide nanoplatelets. The basic strategy involved the preparation of graphite oxide (GO) from graphite through reaction with benzoyl peroxide (BPO), complete exfoliation of GO into…
Isotactic polypropylene (iPP) film was melt-crystallized in a temperature gradient. The iPP film showed well oriented α- and β-crystalline textures along the gradient. The crystalline structure, phase transition boundary and lamellar twisting were examined by X-ray diffraction and laser light diffraction (LLD). On the…
Thermal compacting of previously prepared ultra-high molecular weight polyethylene (UHMWPE) fiber laminates can raise its melting temperature and crystallinity. In this article, thermal shrinkage and the effect of post hot compaction on a commercial UHMWPE fiber laminate at various temperatures was investigated. The t…
Temperature-dependent neutron powder diffraction, magnetization and XPS studies were carried out on an optimally Cr-doped CaRuO(3), i.e. CaRu(0.85)Cr(0.15)O(3) (CRC-15). XPS data revealed that Cr exist in 3+ and 6+ oxidation states. The charge dissociation preserves the overall 4+ nominal charge of the Ru site. Althou…
Abstract Four (μ‐oxido)diiron(III) complexes of differently alkyl‐substituted 2,2′‐bidipyrrin ligands [(L)Fe] 2 O have been prepared by a one‐pot approach from the respectively substituted 2,2′‐bipyrroledialdehydes and 3,4‐dialkylpyrroles, and from a suitable source of trivalent iron, under alkaline conditions. Four s…
Abstract An attempt was made to explore the effects of interchange reactions on the crystallization, melting, and dynamic mechanical behavior of binary blends based on poly(trimethylene terephthalate) (PTT)/poly(ethylene 2,6‐naphthalate) (PEN). 1 H NMR spectroscopy is used to verify the occurrence of interchange react…
Y(2)GeO(5) (yttrium germanium penta-oxide) was synthesized by solid-state reaction at 1443 K. The arrangement, which has monoclinic symmetry, is isostructural with Dy(2)GeO(5) and presents two independent sites for the Y atoms. Around these atoms there are distorted six-coordinated YO(6) octa-hedra and seven-coordinat…
Abstract Lithium aluminate (α‐/β‐LiAlO 2 ) particles were fabricated using three methods. The first method used organic glycerin and triethylene glycol which functioned as a catalyst for fabrication of α‐LiAlO 2 particles with Al(OH) 3 and LiOH·H 2 O as the starting materials. As a result of the heat‐treatment of the…
An improved carbon nanotube conducting composite material for electrochemical capacitors has been devised and tested. It was prepared by electrophoretic deposition of a film of noncovalently surface modified with 1-pyrenebutyric acid HiPCO single-wall carbon nanotubes (pyr-SWCNTs), which were then electrochemically co…
Abstract 2D Ni 2 (C 6 H 19 N 4 ) 2 (V 6 O 18 ) · 2H 2 O ( 1) and Ni 2 (C 6 H 19 N 4 ) 2 (V 6 O 18 ) · H 2 O ( 2 ) are inorganic–organic hybrid compounds that have been synthesised under hydrothermal conditions. Crystalline aggregates composed of both compounds were obtained and structural characterisation was subseque…
A nonmagnetic compensating bilayer imaging system having two uniaxially anisotropic layers is described. Evanescent fields in vacuum are converted to propagating waves in the bilayer, and one layer compensates the phase progression of the other. In this way, subwavelength imaging performance is possible with substanti…
A novel method was employed to modify the surface of carbon black (CB) by an organic small molecule in a Haake Rheomix mixer. The modified carbon black (MCB) was dispersed uniformly in poly(lactic acid; PLA). The crystallization behaviors of PLA, PLA/CB and PLA/MCB composites were investigated by differential scanning…
The lowest part of the 4f-->5d absorption spectrum of Yb(2+)-doped CsCaBr(3) crystals has been calculated using methods of quantum chemistry and it is presented here. A first, low-intensity band is found on the low energy side of the spectrum, followed by several strong absorption bands, in agreement with experimental…
Two position isomers precursors involving 3-cyano-4-methoxythiophene and EDOT ( 2, 3 ) have been synthesized. UV−vis and electrochemical data show that the relative position of the methoxy and cyano groups in the structure has dramatic consequences for the reactivity of the precursor and thus for the structure of the…
The reactions of the small gas-phase gold cluster cations Au(3)(+) and Au(5)(+) with N(2), H(2), and O(2) as well as mixtures thereof were investigated in an octopole ion trap under multicollision conditions. While gold cations are inert toward molecular oxygen, a distinct reaction time and temperature dependent react…
Macro-kinetic models, namely the modified Avrami, Ozawa, Mo, and Kissinger models, were applied to investigate the non-isothermal melt crystallization process of PTT/PBT blends by DSC measurements. It was found that the modified Avrami model can describe the non-isothermal melt crystallization processes of PTT/PBT ble…
The purpose of this research is to study the use of E a as a measure of the energy barrier to the solid-state desolvation of two indomethacin solvates: tert -butyl alcohol (TBA) solvate and methanolate. The desolvation of these solvates was studied over a range of temperatures (60−120 °C) by isothermal thermogravimetr…
2-Azaxanthone, a nitrogenated derivative of the well-studied organic chromophore xanthone, has been covalently bound through 2-(ethylthio)ethylamido linkers to the carboxylic acid groups of short, soluble single-walled carbon nanotubes (CNTs) of 450 nm average length, and the resulting azaxanthylium-functionalized CNT…