Materials Literature
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High direct currents of 2.0 mAmps for a 15 micron diameter single walled nanotube (SWNT) fiber were achieved. Highly aligned, dense SWNT morphology in the fiber was demonstrated to reduce threshold emission and improve resilience to Joule heating. SWNT fibers were exposed to ion bombardment and the effects on emission…
The current study introduces a thermodynamically correct approach which allows a direct precise measurement of the grain boundary triple line tension. The experimental technique utilizes the measurement of the surface topography of a crystal in the vicinity of a triple junction and grain boundary groove on thin wires…
Photochromism is referred to as a photoinduced reversible transformation reaction between two isomers, open and closed, with different absorption spectra upon irradiation with light of an appropriate wavelength. A new photochromic diarylethene, 1-[2-methyl-5-(3, 5-difluorophenyl)-3-thienyl]-2-(2-methyl-3-benzofuran)pe…
The principle of field-emission display is almost the same as the traditional cathode ray tube, so it should display the image with the same quality as CRT. However, the triode structure and uniformity of field-emission is two key issues regarding the field-emission display. In this paper, a planar triode is discussed…
BiSeTe and BiSbTe have been two of the most efficient thermoelectric materials near room temperature applications for many years. In spite of recent progress in enhancement of the efficiency of BiSbTe thermoelectric materials, there has been little progress in developing efficient BiSeTe alloys. BiSeTe is an n-type th…
Abstract: Mineralogical, geochemical, and textural analyses of the white sandstones (Abu Thora Fm.) of Carboniferous in the Abu Rodeiyim region show that they are fluviomarine, well‐sorted, high‐purity, and high‐grade silica SiO2 (average 99.56%). The results indicate that by simple treatment, the white sandstones can…
A constitutive model using dislocation density rate as an internal state variable has been proposed for hot working of β titanium alloy in this paper. The β phase was only taken into consideration during high temperature deformation. The solution strengthening and dislocation interaction were included in the constitut…
A comparison of the electronic structure of two different types of silicon materials viz., ( i ) as grown silicon and ( ii ) solar silicon has been carried out utilizing maximum entropy method and pair distribution function using powder X-ray data sets. The precise electron density maps have been elucidated for the tw…
An innovative post-silicon design validation methodology using recognized industry wide IREM imaging techniques in conjunction with full PC platform enablement was developed, and successfully applied to the IA-32 multiple-core (MC) Nehalem® microprocessor family [1]. Conventional structural based “tester” IREM charact…
L. Nyholm, M. Strømme, A. Mihranyan, and co-workers embed carbon filaments in a matrix of polypyrrole-covered cellulose nanofibers from the green algae Cladophora on page 445. The displayed paper-based energy-storage devices comprise the carbon filament-reinforced polypyrrole–Cladophora nano-cellulose composite as ele…
Abstract Three hydrogen bonding complexes of the gauche‐1PA dimer (GG), trans‐1PA dimer (TT) and mixed dimer (GT) have been calculated for the geometry conformations and excited‐state energies. The electron distribution at the site of C‐O of H‐donor moiety in HOMO transfers to the direction of O‐H of H‐acceptor moiety…
The atomic force microscope (AFM) was employed to study the significant effects of silver (Ag) nanoparticles-treated on the elastic cell wall of bacteria. In this study, the exposed Staphylococcus aureus was grown at 37 °C for 14 h. The cultures were centrifuged and cell pellets were resuspended in Milli-Q water to pr…
We develop a new method to calculate the evanescent wave, the subdivided evanescent waves (SEWs), and the radiative wave, which can be obtained by separating the global field of the image of a metamaterial superlens. The method is based on the Green’s function, and it can be applied to other linear systems. This study…
Zinc oxide (ZnO) pellets were prepared by agglomeration of ZnO nanopowder with distilled water in this study. Annealing at 800oC in different ambient was done on the surface of the pellets in order to change the photoluminescence and structural properties of the sample. The ZnO pellets that were annealed in air, oxyge…
We report progress in mounting small thin diamond sheets over holes in larger substrates in a manner that allows electron beam amplification. In addition to a physical mount, our bonding method must be compatible with the creation and maintenance of the negative electron affinity surface and operation at elevated temp…
With density functional theory, the structural and electronic properties of Au3 and Au2M (M=Ag, Cu, Pd and Pt) clusters have been studied. The structural results indicate that by substituting one Au atom with M atom, the corresponding geometries are changed slightly. To investigate the electronic properties, bonding p…
The last decennia, a lot of effort has been made to introduce new channel materials in a Si process flow. High mobility materials such as Ge need a good gate stack passivation in order to ensure optimal MOSFET operation. Several routes for passivating the Ge gate stack have been explored in the last years. We present…
cosahedral quasicrystalline phase (I-phase) formed in a number of Ti-based alloys, and the I-phase is well ordered and thermodynamically stable in the alloys. Because Ti-based icosahedral (i) quasicrystal phases, which have a new type of translational long-range order and display noncrystallographic rotational symmetr…
A computational study using the density fuctional through linear augmented plane wave (LAPW) and gradient generalized approximation (GGA) methods on the electronic properties of cadmium telluride (CdTe) in two modes namely with relativistic effect and non-relativistic effect is presented. Two electronic properties wer…
Failures of structural materials under dynamic mechanical loading at high strain rates are commonly initiated by shear strain localisation along adiabatic shear bands, which act as preferential sites for crack initiation and propagation. We have used synchrotron based X-ray photoemission electron microscopy (XPEEM) to…