Materials Literature
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BACKGROUND: Influenza A viruses possess RNA genomes that mutate frequently in response to immune pressures. The mutations in the hemagglutinin genes are particularly significant, as the hemagglutinin proteins mediate attachment and fusion to host cells, thereby influencing viral pathogenicity and species specificity.…
Selex ES present progress on their FALCON HD1920x1080p 12μm pitch MWIR array. FALCON is buttable on 3- sides, enabling close packed mosaic arrays to be implemented. An update on FALCON array test results, progress on megapixel mosaic array development and HOT MCT is given.
Various typologies of nanocarbons are considered, including crystalline graphite, amorphous activated carbon, and a large variety of multiwall carbon nanotubes (laboratory-prepared and commercially available, pristine and heat-treated), featured by different purity degree (81.7–99.7 wt %), crystalline quality (amorpho…
Closed-form analytical solutions are obtained for ray tracing in several types of optically anisotropic inhomogeneous media whose optical properties are characterized by a matrix form of the inhomogeneous dielectric tensor in principal coordinates. The first solution is for anisotropic axial media, the second solution…
Mosaic pixel FPA technology comprises a novel microbolometer array design which, together with advanced packaging and integrated optics, can provide enhanced performance in short range sensing applications. Initially developed for passive infrared (PIR) security sensors, the technology can be applied to other non-mili…
We have prepared ZnO films by thermal oxidation of Zn metallic films and analyzed their structure, morphology, wettability, and gas sensing properties. Films structure and surface morphology were derived from X-ray diffraction and atomic force microscopy data. XRD analysis indicates that obtained ZnO films posses a cr…
In this paper, the ultrafine particle removal using CO2gas cluster ion beam (GCIB) technology is investigated. The CO2GCIB is irradiated the sample at an angle of 0°with respect to the surface normal. The higher particle removal efficiency can be achieved at the higher kinetic energy of the gas cluster, and the inside…
We study the optically pumped nuclear spin polarization in a single GaAs/AlGaAs quantum well in the quantum Hall system. We apply resistive detection via the contact hyperfine interaction, which provides high sensitivity and selectivity, to probe a small amount of polarized nuclear spins in a single well. The properti…
Literature shows that microwave conditioning has been used to age bitumen. There has been less research using microwaves to accelerate the aging of asphalt mixtures. This paper considers the use of microwave heating as a means of rapidly aging gyratory prepared test specimens. Indirect tensile stiffness modulus, asses…
Since gas flows in micro/nano devices are dominated by the interaction of gas molecules and solid surfaces, surface modification technique is one of the critical issues for optimizing the thermal performance of these devices. In this paper, we demonstrate the successful application of vertically aligned single-walled…
The 2p3d resonant X-ray emission spectroscopic (RXES) measurements on 8.4 and 5.0 nm cobalt and 3.6 nm cobalt–nickel nanoparticles coated with oleate molecules are provided. The spectra reveal low energy resonant Raman features at 0.3 and 0.75 eV. In combination with time-dependent density functional theory (TD-DFT) a…
Membrane incorporated synthetic α-helical polypeptides labelled with Dy(III) chelate complexes and nitroxide radicals were studied by the inversion recovery (IR) technique and Dy(III)-nitroxide distances were obtained. A comparison of obtained distances with the previously reported Gd(III)-nitroxide double electron–el…
PURPOSE: Small injection ports for mice are increasingly used for drug testing or when administering contrast agents. Commercially available mini-ports are expensive single-use items that cause imaging-artifacts. We developed and tested an artifact-free, low-cost, vascular access mini-port (VAMP) for mice. PROCEDURES:…
Optical spectra of finite-momentum excitons in carbon nanotubes with gold nanostructures are theoretically studied. A Green function method is developed for self-consistently solving Maxwell equations including the quantum-mechanical nonlocal response of the nanotubes and the local response of the nanostructures. Exci…
While InGaAs-based focal plane arrays (FPAs) provide excellent detectivity and low noise for SWIR imaging applications, wider scale adoption of systems capable of working in this spectral range is limited by high costs, limited spectral response, and costly integration with Si ROIC devices. RTI has demonstrated a nove…
We demonstrate an additive ink-jet process to fabricate homogeneous CdS semiconductor films for thin film transistors (TFTs). This process combines in-situ synthesis with ink-jet printing at a maximum processing temperature of 250°C. The solvent in the reaction is used to dissolve the cadmium and sulfur precursors. Th…
Titanium atoms are adsorbed to graphene with a significant binding energy and render diverse functionalities to it. Carrying out first-principles calculations, we investigated the effects of charging and static electric field on the physical and chemical properties of graphene covered by Ti adatoms. When uniformly Ti…
The binding of lanthanide cations by 2-pyridylmethoxy derivatives of p-tert-butyldihomooxacalix[4]arene (1b), in the cone conformation, and p-tert-butylhexahomotrioxacalix[3]arene (2b), in both cone and partial cone conformations, was studied. These properties were assessed by extraction studies of the metal picrates…
Growth of single-walled silver and copper nanotubes (Ag- and Cu-SWNTs), confined in carbon nanotubes (CNTs), has been studied by using the classical molecular dynamics method. It is found that: (1) Four kinds of Ag-SWNTs, i.e., (3, 2), (4, 2), (4, 3), and (5, 3) ones, and five kinds of Cu-SWNTs, i.e., (3, 2), (4, 2),…
Summary During acidizing stimulation or cleanup operations, metal tubulars, downhole tools/valves, and surface lines are exposed to acidic fluids and are prone to corrosion. Because corrosion rates drastically increase in high-temperature wells, controlling corrosion is critical and must be dealt with carefully. In ad…