Abstract:… of thermodynamically unstable InGaN alloy compositions. While the synthesis of high quality InN has proven challenging via standard growth techniques such as metalorganic chemical vapor deposition (MOCVD), our preliminary investigations have confirmed that InN nucleates… more
Abstract:… to depend in a strong and non-linear manner on ammonia concentrations. However, these processes are only starting to be studied in the field, and the remaining uncertainties are partially responsible for current limitations in the prediction of aerosol nucleation. An… more
Abstract:To address the DARPA need for airframe crack nucleation prediction through surface roughness measurement, Luminit, LLC proposes to develop a new Fiber-Image-Guide Airframe Roughness Profilometer (FIGARP), based on a novel phase resolvable full-field optical coherence tomography… more
Abstract:… high performance gear steels will be measured and modeled. The goal will be to assess the feasibility of achieving a sufficiently gradual transformation to serve as a desired "state signature" of fatigue lifetime. In parallel, the 3D characterization of nucleation sites and… more
Abstract:… of other atmospheric trace species on the spectral ammonia peak. Commercial Applications and other Benefits as described by the awardee: By contributing to the identification of aerosol particles, and by providing information on how these particles nucleate and grow,… more
Abstract:The proportion of fatigue life that is expended during fatigue crack nucleation is significant in the materials and loading typical of aircraft structural components. The ability to measure or compute the time for fatigue damage to nucleate active fatigue cracks allows the… more
Abstract:…, crack resistant, transparent to X-rays and structured on a submicron scale. Furthermore, applications in lithography-pattern stamps require similar rigorous abrasive wear on submicron sized features. The objective of this SBIR is to investigate NSD nucleation, strength,… more
Abstract:… process of aircraft plume aging. Under this program, standard plume dilution profiles will be identified and a prototype sampling system that captures the salient aspects of this dilution process will be built. Initial feasibility tests of mixing and sulfate nucleation in the… more
Abstract:… where cyclic loading leads to contact and slip between mating parts. For instance, the disk/blade assemblies in turbine engines suffer fretting at the dovetail contacts. In the proposed analysis methodology, an analytical model of fretting fatigue crack nucleation based on… more
Abstract:… The Phase II will be aimed at the implementation of laser photoionization coupled with optical techniques for more complete in situ time-resolved characterization of both inherently ionized and neutral fractions of the ablated growth precursors. Mechanisms of nucleation and… more
Abstract:…l diagnosis. Genetic abnormalities affect 1 in 200 births and represent a major health care and societal problem. There is a critical unmet need for a definitive non- invasive method to obtain fetal cells for genetic diagnosis in the first trimester of pregnancy. Fetal nucleated… more
Abstract:… for subsequent pressing and sintering into consolidated pellets. Following successful production of the individual powders, core-shell nanopowders will be developed consisting of a hard magnetic core coated with a soft magnetic phase using a dynamic heterogeneous nucleation… more
Abstract:During the proposed Phase II effort we will manufacture novel ohmic contacts and measure the stress in the ohmic contacts by several methods. We will thermally cycle the ohmic contacts and look for nucleated dislocations as a measure of induced stress. We will also coordinate… more
Abstract:Ammonia, the primary atmospheric base, plays a crucial role in: (1) determining the acid-neutralizing capacity of tropospheric air masses; and (2) in the nucleation, growth, composition, and chemistry of aerosol particles, which are linked with environmental degradation and… more
Abstract:… by its high temperatures and rapid quenching. Due to the extremely high temperatures involved, material injected into the plasma flame can be vaporized and dissociated very rapidly into elemental form. Rapid quenching of the vapor prevents the growth of nucleated… more
Abstract:DESCRIPTION (provided by applicant): This Phase I project proposes to evaluate a novel methodology to induce biomimetic calcium phosphate (CaP) deposition on a chemically stable and covalently linked monolayer of a biomolecule, that induces hydroxyapatite (HA) nucleation in many… more
Abstract:The proportion of fatigue life that is expended during fatigue crack nucleation is significant in the materials and loading typical of aircraft structural components. The ability to measure or compute the time for fatigue damage to nucleate active fatigue cracks would allow the… more
Abstract:…n, a diffusion barrier top coat will be used to inhibit contaminates from reaching the glass envelope, thereby extending the life of the lamps by reducing another major failure mechanism, which is fracture of the glass envelope due to phase changes at impurity nucleation sites… more
Abstract:…ormed ante mortem in routine surveillance of live animals and in blood screening of the human blood supply. The MPD Assay does not rely on antibodies but mimics the folding activity of prions utilizing a target binding peptide. The amplification of the signal through … more
Abstract:… the propagation into the material of a shock wave formed by the laser pulse. The process model is computationally efficient, and allows estimates of the residual stress distribution, the part distortion due to the plastic strains, and the crack nucleation and crack… more
Abstract:… display technology and incorporated into select coat proteins of the M13 bacteriophage, a virus of 800nm length and 6-10nm diameter, which will act as a scaffold for each nanowire design. The displayed peptides with various materials specificity will direct the nucleation… more
Abstract:…ent approaches. The reactor is similar to the HTCVD reactor developed by Link¿ping University and Okmetic. The approach will be to initially try out different chemistries at fairly high temperatures where sublimation is a dominant process. By studying the gas phase nucleation a… more
Abstract:… laboratory for combinatorial technologies such as advanced sputtering, thermal and plasma-assisted chemical vapor deposition, and surface templating. This computational laboratory will be used for understanding and optimizing critical processes in carbon nanotube … more
Abstract:… that would exclusively use electron ionization or hole ionization. Recent developments in monitoring techniques like in-situ spectroscopic ellipsometry can lead to high quality MCT heterostructures with optimized interfaces. This, in combination with better nucleation… more
Abstract:… used by the pharmaceutical industry to conduct High Performance Liquid Chromatography (HPLC) measurement during drug discovery and development exhibit a number of limitations. This project will focus on developing a next-generation detector, a Condensation Nucleation… more
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