Materials Literature
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Owing to its excellent electrical, mechanical, thermal and optical properties, graphene has attracted great interests since it was successfully exfoliated in 2004. Its two dimensional nature and superior properties meet the need of surface plasmons and greatly enrich the field of plasmonics. Recent progress and applic…
The photovoltaic effect in the BiFeO3/TiO2 heterostructures can be tuned by epitaxial strain and an electric field in the visible-light region which is manifested by the enhancement of absorption activity in the heterojunction under tensile strain and an electric field based on the first-principles calculations. It is…
Biaxially textured MgO templates have been successfully fabricated on several amorphous polymer films including Kapton tapes, polyimide, Poly(methyl methacrylate) (PMMA), and photoresist films using ion-beam-assisted-deposition (IBAD). With a Y2O3 buffer layer on polymer surfaces, roughening of the polymer surfaces du…
By means of thermogravimetric analysis (TGA), influences of organic acids such as citric acid, oxalic acid and tartaric acid on decomposition process and thermal behaviors of calcium carbonate were investigated in non-isothermal condition. Experiments were conducted from the ambient temperature to 1273 K at a heating…
The size and size distribution of nanomaterials are important factors for understanding their characteristics. A scanning electron microscopy (SEM) provides an easily accessible method to characterize nanostructures. We have developed a standard operating protocol (SOP) for the calibration of SEM by using CRMs (certif…
We use numerical simulations to investigate the properties of metal contacts to three-dimensional arrays of carbon nanotubes (CNTs). For undoped arrays top-contacted with high or low work function metals, electrostatic screening is very strong, resulting in a small Schottky barrier for current injection in the top lay…
The optical rotation and selective transmission spectra of ambichiral sculptured thin films were calculated using the transfer matrix method. The results of optical modeling showed that at lower angular rotations the optical characteristics of ambichiral sculptured thin films are the same as chiral sculptured thin fil…
Graphene nanoplatelet reinforced semi‐crystal poly(arylene ether nitrile) (PEN/GN) nanocomposites were prepared by an economically and environmentally friendly method of twin‐screw extrusion technique. The feasibility of using PEN/GN nanocomposites was investigated by evaluating their thermal behaviors, mechanical, an…
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The effects of surface modification on the filler–filler and rubber–filler interactions in silica-filled nitrile rubber composites have been studied. Nitrile rubber composites are prepared with untreated stöber silica, organosilane-treated stöber silica and externally added precipitated silica along with organosilane.…
Pseudocontact shifts (PCS) contain a wealth of geometric information, which makes paramagnetic NMR one of the best methods for accurate geometric determinations in solution. It is well-known that PCS are intrinsically linked to Fermi contact (FC) shifts, and the separation of the two terms is achieved through lineariz…
was successfully synthesized with titanium(IV) isopropoxide and niobium oxalate by anovel polymerized complex (PC) method. The morphology and structure of the as-prepared sample wascharacterized by means of High-Resolution Transmission Electron Microscope, powder X-ray diffraction, andLaser Raman Spectroscopy. The spe…
This article relates curcumin incorporation into poly(latic acid) and poly(lactic-co-glycolic acid) fibers by electrospinning. The fibers were characterized by field emission scanning electron microscopy and Fourier transform-infrared spectroscopy, performed in attenuated total reflection, and the actual curcumin cont…
Abstract Magnesium hydroxide [Mg(OH) 2 ] with high flame retardant efficiency filled polypropylene (PP) composites were prepared using a twin-screw extruder. The impact fracture behavior of the composites was measured at room temperature. It was found that the toughening effect of the filler content on the PP resin wa…
In this work ternary blends of symmetric lamellae-forming poly(styrene-block-methyl methacrylate) block copolymer and polystyrene and PMMA homopolymers were prepared for the directed self-assembly (DSA) on chemically nanopatterned substrates using 2× density multiplication. Homopolymers with comparable molecular weigh…
In this paper, we set the stage for molecular dynamics studies of the transport properties of molten salts in the presence of external electric and magnetic fields by introducing an original propagator to integrate the equations of motion. Using this algorithm, we compute, within linear response theory, transport prop…
A series of pure and copper-doped cobalt oxide films was prepared by plasma-enhanced metalorganic chemical vapor deposition (PEMOCVD). The effect of Cu-doping on the chemical structure and morphology of the deposited films was investigated. Raman and FTIR spectroscopies were used to characterize the chemical structure…
Mesoporous polymer nanoparticles containing pores with sizes ranging from 2 to 50 nm are attractive for wide applications, such as catalysis, drug delivery, and separations. On the basis of nanometer-sized phase separation and cleavage reaction in the micellar cores, polymeric micelles with mesoporous cores are prepar…
Silver nanoparticles (AgNPs) with spherical and prism morphologies were formed at room temperature depend on the amino acid attached with phenolic unit. Absorption studies showed 410-420 nm surface plasmon resonance absorption for spherical nanoparticles whereas prism morphology showed three absorption peaks (382, 452…
Gold nanochains/nanowires were prepared by simultaneously reducing the gold salt in the presence of stabilizing biomolecules —L-aspartate and L-lysine, Collagen—that acts as capping agent and as a template in the formation of two-dimensional gold nanostructures. L-aspartate and L-lysine were used in order to form nano…