Materials Literature
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Because of their unique properties, carbon nanotubes and, in particular, multiwalled carbon nanotubes (MWNTs) have been used for the development of advanced composite and catalyst materials. Despite their growing commercial applications and increased production, the potential environmental and toxicological impacts of…
Abstract The corrosion susceptibility of Mg and its alloys in humid and aqueous environments limits their widespread application. The performance of several conversion coating technologies is reviewed herein. In addition to the assessment of performance based on the literature to date, thermodynamic analysis has been…
Single-molecule surface-enhanced Raman spectroscopy (SMSERS) of crystal violet (CV) has been reported since 1997, yet others have offered alternative explanations that do not necessarily imply SMSERS. Recently, the isotopologue approach, a statistically significant method to establish SMSERS, has been implemented for…
Abstract Using Foreman’s method, the core structure and Peierls stress of dislocations in bubble rafts have been investigated within the framework of the modified Peierls-Nabarro (P-N) model in which the discrete lattice effect is taken into account. The core width obtained from the modified P-N model is much wider th…
Abstract The results of pressure‐tuning Raman spectroscopic, X‐ray powder diffraction and solid‐state 13 C‐NMR studies of selected dicarboxylate anions intercalated in a Mg–Al layered double hydroxide lattice are reported. The pressure dependences of the vibrational modes are linear for pressures up to 4.6 GPa, indica…
Abstract Miscibility and crystallization behaviors of biodegradable poly(butylene succinate‐ co ‐butylene terephthalate) (PBST)/poly(hydroxyl ether biphenyl A) (phenoxy) blends were investigated with various techniques in this work. PBST and phenoxy are completely miscible as evidenced by the single composition‐depend…
Abstract We report on the fabrication of highly uniform periodic arrays of metallic nanodots formed on glass substrates through a facile anodic aluminum oxide template‐assisted process and their use in selective surface‐enhanced Raman scattering spectroscopy to probe the structural properties of flexible crystalline‐s…
A discussion is made for the case of nanocomposites, and the size dependency of the nanosized inclusions in terms of inclusion—matrix interface properties. Using the concept of ‘interface—interphase,’ the molecular mechanics model is suggested for obtaining the interfacial stiffness. Illustration is made herein for th…
Abstract Raman studies of nanotubes under pressure have been a lively area of research. However, the results are not always as expected and at times have not been adequately explained. One example of the diversity of the results is the higher energy Raman mode (the graphitic mode, GM) shift to higher wavenumber under…
Natural polysaccharides are supports for sensors, absorbents and catalysts. They are also gelling agents in the aqueous phase, due to the high level of dispersion of hydrocolloids. This article focuses on an effective method to prepare dry materials which retain the dispersion of the polymer hydrogel, namely polysacch…
The stability of the Shastry-Sutherland (ShaSu) phase as a function of electron concentration is investigated through the field dependence of thermal and magnetic properties of the solid solution Ce${}_{2\ensuremath{-}x}$Pd${}_{2+y}$In${}_{1\ensuremath{-}z}$ on the antiferromagnetic (AF) branch. In these alloys, the e…
The effect of irradiation on a 90/10 ethylene vinyl acetate/waste tire dust (EVA/WTD) blend was studied in the presence of 4 phr trimethylolpropane triacrylate (TMPTA) or tripropyleneglycol diacrylate (TPGDA). The blend was irradiated using a 3.0-MeV electron beam machine at 0, 50, 100, 150, and 200 kGy irradiation do…
Four types of indium oxide (In 2 O 3 ) nanostructures were synthesized on Au-catalysed silicon substrate via a VLS method. A rod-like In 2 O 3 nanostructure was chosen to fabricate In 2 O 3 –Al 2 O 3 core–shell nanostructures with different shell thicknesses via a two-step method. Core–shell nanostructures with shell…
We report a breakdown of Barkhausen critical-scaling behavior in NiO/Fe films with increasing domain-wall pinning by means of a Kerr microscope capable of direct domain observation. The time-resolved domain images in the films revealed that the Barkhausen jump size is generally decreased with increasing NiO thickness,…
Gold nanoparticles (AuNP's) prepared through a controllable synthesis and aggregation process are attractive for their unique properties that arise from their surface plasmon resonances (SPRs). However, aggregation-controlled AuNP's on amorphous surfaces have not been well explored. In this study, we present a simple…
In this study, we investigate CdSe based core−shell quantum dots as potential active materials for nonlinear optical applications. A detailed characterization of the linear and nonlinear optical properties is carried out for QDs in solution and within two electronically similar sol−gel hosts, hafnia and zirconia. The…
In this letter, the production of multi-phase WO3 and WO3-x (where x could vary between 0.1 and 0.3) nanostructures synthesized by CO2-laser pyrolysis technique at varying laser wavelengths (9.22-10.82 mm) and power densities (17-110 W/cm2) is reported. The average spherical particle sizes for the wavelength variation…
Abstract One of the greatest challenges in developing protein chips is the detection of trace amounts of proteins on their surfaces. Traditionally employed techniques, such as optical microscopy and fluorescence, are effective and widely used, but it is sometimes hard to obtain fingerprint signals of biomolecules. In…
Abstract Highly transparent optical resins based on poly(methyl methacrylate) (PMMA) and two cyclotriphosphazene derivatives which acting as halogen‐free flame retardants were prepared. The refractive indices, visible light transmittance, water absorption, flame‐resistant characteristic, and the mechanical properties…
Three new steroidal glycosides, cyanoauriculosides F, G and H (1-3), were isolated from the roots of Cynanchum auriculatum (Asclepiadaceae) along with two known steroidal derivatives. On the basis of spectroscopic analysis and chemical methods, their structures were identified as 20-O-acetyl-8,14-seco-penupogenin-8-on…