Tech Exchange

Novel Nano-Structured Concept for Thermal Protection System

Lightweight carbon-carbon (C/C) composites produced by pressure-assisted co- polymerization of carbon fibers, hydrocarbons and fullerenes have excellent mechanical properties and high thermal stability that make them ideal for thermal protection applications.

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High Performance Single Crystal Piezoelectrics

The new single crystals offered here possess exceptional properties and are poised to revolutionize piezoelectric materials applications. In addition to strain levels exceeding 1% (usable strain: 0.5% at 35 kV/cm), these crystals exhibit five times the strain energy density of conventional piezoceramics. Thus, unlike piezoceramic actuators that employ strain magnification schemes, single crystal actuators can deliver higher strain levels without sacrificing generative force. The high electromechanical coupling of the proposed crystals (>90%) increases transducer bandwidth, resulting in greater sensitivity and acoustic power. In addition, low strain hysteresis results in improved high power efficiency, and lower acoustic impedance than piezoceramics allowing for easier matching to air or water. High coupling also leads to dramatic improvement in passive vibration damping.

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Printable Biosensor for On-Site, Online Measurements

Bioactive Hybrid Materials for Photonic Microsystems It allows samples to be analyzed on site within a few minutes by integrating biotechnology, information technology, electronics, physics, and chemistry to realize small and cost-effective bio-photonic microsystems.

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Maintain Food Crispiness from Freezer Storage to Microwave Preparation

Methods are sought to replicate the texture of crunchy food in a convenience food stored in a freezer and prepared in a microwave oven. All ingredient-based solutions must be GRAS (generally recognized as safe) for human consumption. Cost must be within 1 to 2 cents per pound for the final product, and cooking time, once out of the box, must be complete in 4 to 6 minutes. Storage time for the packaged food should be 18 months in a home freezer.

Posted in: NASA Tech Needs

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Freshness Indicator for Consumer Packaging

A technology is sought that indicates that a product packed into a rigid metal container has not been tampered with and/or degraded over time. The solution must incorporate a method of communicating this information to the packager, retailer, or consumer. After packaging, and depending on the product, the container may be subjected to a thermal treatment, to a maximum of 130°C for an hour for some canned foods, or a 90°C pasteurization treatment for some beverages.

Posted in: NASA Tech Needs

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High-Birefringence Optical Material

A high-birefringence optical material suitable for implementation in optical systems is sought. This material has several qualities of interest beyond high birefringence: high hardness, making it amenable to standard polishing and manufacturing processes; low CTE (coefficient of thermal expansion); low CTRI (coefficient of thermal refractive index); low absorption at 1.55 micrometers; and reasonable bulk density. A material is sought that can be processed and handled using standard techniques.

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Orthobiologics to Treat Spine-Related Diseases

This organization seeks new orthobiologic technologies that stimulate bone growth, provide a growth scaffolding, and promote bone healing through osteoinduction (bone formation is actively induced) and osteoconduction (where a scaffold facilitates bone repair passively) in spinal fusion repairs. They are also seeking FDA-approved elastic materials with strength and stiffness close to cortical bone.

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