Materials

High-Strength, Superelastic Compounds

A new ordered intermetallic compound reduces costs, increases performance, and prevents cracking and distortion during thermal processing. In a previous disclosure, the use of 60-NiTiNOL, an ordered intermetallic compound composed of 60 weight percent nickel and 40 weight percent titanium, was investigated as a material for advanced aerospace bearings due to its unique combination of physical properties. Lessons learned during the development of applications for this material have led to the discovery that, with the addition of a ternary element, the resulting material can be thermally processed at a lower temperature to attain the same desirable hardness level as the original material. Processing at a lower temperature is beneficial, not only because it reduces processing costs from energy consumption, but because it also significantly reduces the possibility of quench cracking and thermal distortion, which have been problematic with the original material. A family of ternary substitutions has been identified, including Hf and Zr in various atomic percentages with varying concentrations of Ni and Ti.

Posted in: Materials, Briefs

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Improving Single-Patient-Use Model with Disposable Blood Pressure Cuff

Single-use cuff could cut infection spread. Each year, hospital-acquired infections cost hospitals approximately $5 billion in the United States, according to a report in the American Journal of Infection Control. Reducing infection spread helps hospitals avoid these costs and improve patient safety. To help reduce cross-contamination, the Centers for Disease Control and Prevention recommend the use of patient-dedicated products. While catheters, gloves, and the like are high on the hospital’s radar to help address this, blood pressure cuffs are often overlooked, despite research that shows that blood pressure cuffs used on multiple patients can transmit pathogens such as MRSA or C. diff. The single-patient-use cuff solutions that do exist are traditionally expensive, wasteful, and difficult to implement.

Posted in: Bio-Medical, Manufacturing & Prototyping, Materials / Adhesives / Coatings, Materials, Plastics, Medical, Patient Monitoring, Briefs, MDB

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Differential Muon Tomography to Continuously Monitor Changes in the Composition of Subsurface Fluids

This innovation enables tracking of carbon storage or enhanced oil recovery in subsurface reservoir projects. Muon tomography has been used to seek hidden chambers in Egyptian pyramids and image subsurface features in volcanoes. It seemed likely that it could be used to image injected, supercritical carbon dioxide as it is emplaced in porous geological structures being used for carbon sequestration, and also to check on subsequent leakage. It should work equally well in any other application where there are two fluids of different densities, such as water and oil, or carbon dioxide and heavy oil in oil reservoirs.

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Conductive Carbon Nanotube Inks for Use with Desktop Inkjet Printing Technology

A mixture of carbon nanotubes and silver or gold nanoparticles could be applied by inkjet printing to flexible substrates. Inkjet printing is a common commercial process. In addition to the familiar use in printing documents from computers, it is also used in some industrial applications. For example, wire manufacturers are required by law to print the wire type, gauge, and safety information on the exterior of each foot of manufactured wire, and this is typically done with inkjet or laser printers.

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Enhanced Schapery Theory Software Development for Modeling Failure of Fiber-Reinforced Laminates

This tool captures the physics of the damage and failure mechanisms. Progressive damage and failure analysis (PDFA) tools are needed to predict the nonlinear response of advanced fiber-reinforced composite structures. Predictive tools should incorporate the underlying physics of the damage and failure mechanisms observed in the composite, and should utilize as few input parameters as possible.

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High-Performance, Low-Temperature-Operating, Long-Lifetime Aerospace Lubricants

The synthesis and characterization of six new ionic liquids, with fluoroether moeties on the imidazolium ring, each with vapor pressures shown to be

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Carbon Nanotube Microarrays Grown on Nanoflake Substrates

This process creates materials comprised predominantly of single-walled carbon nanotubes. This innovation consists of a new composition of matter where single-walled carbon nanotubes (SWNTs) are grown in aligned arrays from nanostructured flakes that are coated in Fe catalyst. This method of growth of aligned SWNTs, which can yield well over 400 percent SWNT mass per unit substrate mass, exceeds current yields for entangled SWNT growth. In addition, processing can be performed with minimal wet etching treatments, leaving aligned SWNTs with superior properties over those that exist in entangled mats.

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