Materials Literature
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An indium-incorporated germanium–antimony–telluride material, In 20 Ge 15 Sb 10 Te 55 (IGST), was investigated as a recording material for phase change memory. The crystallization temperature of IGST was 226 °C, which is 75 °C higher than that of conventional GST. The reset current of the device using IGST was about 1…
This monograph presents recent advances in neural network (NN) approaches and applications to chemical reaction dynamics. Topics covered include: (i) the development of ab initio potential-energy surfaces (PES) for complex multichannel systems using modified novelty sampling and feedforward NNs; (ii) methods for sampl…
We present a density functional theory investigation of the adsorption properties of NO and NO 2 as well as SO 2 and SO 3 on BaO and Pt overlayers on anatase TiO 2 (001) surface. Monolayers, bilayers, and trilayers of BaO grow without strain-induced large scale reconstructions. While the bilayer and trilayer preserve,…
The effects of Bi3+ substitution on the microstructures and properties of low-temperature fired NiCuZn ferrites have been investigated. It is found that Bi3+ ions can enter into the ferrite lattice and consequently enhance the grain growth and densification in the sintering process due to the activation of the lattice…
The photothermal efficacy of near-infrared gold nanoparticles (NP), nanoshells, and nanorods was studied under pulsed high-energy optical excitation in plasmonic nanobubble (PNB) mode as a function of the wavelength and duration of the excitation laser pulse. PNBs, transient vapor nanobubbles, were generated around in…
We show with the aid of first-principles electronic structure calculations that suitable choice of the capping ligands may be an important control parameter for crystal structure engineering of nanoparticles. Our calculations on CdS nanocrystals reveal that the binding energy of model trioctylphosphine molecules on th…
The "Nanowave" substrate, comprising a close-packed array of nanospheres onto which a thin metal shell of silver or gold is deposited, was first fabricated in our laboratory in 1984 and used as a surface-enhanced Raman scattering (SERS)-active substrate for the sensitive and reproducible detection of analytes. More th…
A necessary step in advancing the use of polyethylene glycol (PEG) surface coatings in critical biotechnological applications such as cancer treatments is to provide direct and reliable nanoscale property characterization. Measurements for such characterization are currently provided by scanning probe methods, which a…
Massless Dirac electrons in graphene fill Landau levels with energies scaled as square roots of their numbers. Coulomb interaction between electrons leads to mixing of different Landau levels. The relative strength of this interaction depends only on dielectric susceptibility of surrounding medium and can be large in…
No AccessEngineering with RubberFeb 2012Materials and CompoundsG. R. HamedG. R. HamedSearch for more papers by this authorhttps://doi.org/10.3139/9783446428713.002SectionsAboutPDF ToolsAdd to FavoritesDownload CitationTrack CitationsCopy LTI LinkPDF key 'share (en)' returned an object instead of string.FacebookTwitter…
O2 activation without metal! O2 reduction catalyzed by different metal-free porphyrins has been studied at liquid–liquid interfaces. Porphyrins with electron-withdrawing groups at the meso-positions exhibit a stronger catalytic capability than those with electron-donating groups, confirming an activation pathway invol…
The nonlinear behavior of piezoelectric response in Li x (Na 0.5 K 0.5 ) 1- x NbO 3 ceramics with x =0.00–0.08 was investigated by Rayleigh analysis. These ceramics exhibited a linear dependence of the piezoelectric coefficient, d 33 , with the applied electric field. This data was then analyzed in accordance to the R…
The effect of dietary chitosan on growth performance and immune index were investigated in ducks. One-day-old ducks were fed on a control diet or diets containing 0.00, 0.30, 0.60, 1.20, 2.40 and 4.80 g/kg of 85.20% deacetylated chitin (chitosan) or 0.45 g/kg aureomycin for 35 days. The results indicate that the ducks…
We report the results of tensile cyclic loading tests conducted to examine the dependence of constitutive relations for superelastic Cu–Al–Mn alloy rods on loading rates. Recently, Cu–Al–Mn alloy rods with diameters up to 8 mm have been developed by the authors, and it has been demonstrated that these rods have excell…
The degree of surface functionalization of colloidal dispersions of Au nanoparticles (AuNPs) by sulfur heterocyclic compounds is determined using localized surface plasmon resonance spectroscopy (LSPRS), morphological characterization, and electrodynamic modeling. We demonstrate that AuNP surface coverage is the resul…
Semiconductor quantum dots are of interest as optical gain media for lasing applications. Here we report on efficient, broad bandwidth optical gain in the CdSe/ZnS/CdSe quantum dot/barrier/quantum shell nanocrystal. These nanocrystals are known to support spontaneous emission from both CdSe phases, offering promise fo…
We develop a theory to represent dislocations and disclinations in single crystals at the continuum (or mesoscopic) scale by directly modelling the defect densities as concentrated effects governed by the distribution theory. The displacement and rotation multi-valuedness is resolved by introducing the intrinsic and s…
The periodic bullet-like and cone-like submicron grating (SMG) structures on germanium (Ge) substrates were fabricated by dry etching processes via laser interference lithography. Their optical reflectance characteristics as well as the wettability of the surface were investigated. The wide cone-like Ge SMG structure…
Today, petroleum-based superabsorbents are widely used, but interest in renewable alternatives is on the rise. This study presents two wood-based absorbent materials suitable for various absorption applications as an alternative to petroleum-based products. Never-dried bleached kraft pulp was treated with TEMPO-oxidat…
It is shown by density functional theory calculations that high symmetry silicon cages can be designed by coating with Li atoms. The resulting highly symmetric lithiated silicon cages (up to D(5d) symmetry) are low-lying true minima of the energy hypersurface with binding energies of the order of 4.6 eV per Si atom an…