Tech Exchange

Oxygen Barrier Materials for Improving Food/Beverage Shelf Life

An organization would like to increase the oxygen barrier in thermoplastic elastomers by an order of magnitude or more to preserve the shelf life of food/beverages. This organization is seeking an order-of-magnitude improvement in oxygen blocking, without a substantial increase in cost. This improvement may be achieved by a new material, by ingredients mixed with the current formulas, or by using additives with the mix. Regulatory approvals and organoleptic issues (flavor/odor/color effects) are also concerns.

Posted in: Tech Needs, NASA Tech Needs

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MothEye Non-Reflective Display Coating Kills Glare and Improves Contrast

Sub-wavelength nanostructures virtually eliminate glare and minimize reflection while enhancing contrast and light transmission to over 99% in the visible wavelengths. Sony Chemical has developed manufacturing expertise in this nanostructure coating, which is called “MothEye” because it emulates the hexagonal cells and nanostructures of the eye of a moth. A roll-to-roll production method has been developed.

Posted in: Techs for License

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Commercial-Scale, High-Conductivity Graphene Inks for Printed Electronics

Vorbeck’s graphene-based Vor-ink™ conductive inks and coatings combine exceptional electrical conductivity with high-speed and cost-effective printability on a variety of printing and coating systems, including flexo and roll-to-roll. With conductivity levels as much as 10X higher than typical carbon inks, Vor-ink requires no high-temperature sintering, and creates robust films that do not crack or delaminate even with repeated flexing and creasing. This enables flexible applications where bending, folding, handling, dropping, and even crumpling do not disturb the printed circuitry.

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Dust Mitigation Connectors for Electrical Cables and Fluid Lines

Faults in wiring systems are a serious concern for the aerospace and aeronautic (commercial, military, and civil) industries. Circuit failures and vehicle accidents have occurred and have been attributed to faulty wiring created by open and/or short circuits. Often, such circuit failures occur due to vibration during vehicle launch or operation.

Posted in: NASA Tech Needs

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Indoor Positioning System Utilizes Wireless LAN Network

A positioning system utilizes ZigBee™, a wireless sensor network on the 2.4-GHz ISM band. The technology applies stochastic reasoning in analyzing the ID and received signal strength indication (RSSI) of received wireless signals. Due to multipath interference, the position of people or target objects can be estimated within a margin of error of one to several meters, regardless of signal loss, noise, or signal fluctuation.

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Square Piston Engine Reduces Emissions

The Square Piston Engine (SPEC), a two-stroke engine with a square piston, has an improved power-to-weight ratio compared to existing engines. The engine features the same three moving parts as a conventional two-stroke engine: crank, gudgeon, and piston. The delayed opening of the exhaust port on the power stroke provides a cleaner burn of the fuel, yielding more torque and lower emissions. The SPEC also has a closed-loop engine oiling system, which provides component durability and reduced hydrocarbon consumption. The engine is modular in design, providing significant manufacturing flexibility.

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Materials that Form Mesh-Based Sheets

Materials exist that provide optical clarity, but the fabricmaking process drives the costs too high. A company seeks cost-effective materials and technologies that will form meshbased sheets exhibiting high optical clarity and low haze. The resulting sheet/film/fabric will also be evaluated based on cost effectiveness of production (material and process), the ability to be processed in current machines, and water diffusion. The material must be food-grade and flexible, and it should have a pore/mesh size no greater than 200 microns.

Posted in: Tech Needs, NASA Tech Needs

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