Briefs : Medical
PTC Heater Brings Greater Control for Hand-held Medical Devices and Disposables

Point of Care diagnostics devices, whether handheld or single-use, often require a brief application of tightly controlled heat. The disposable nature of these devices requires a low-cost component capable of delivering that heat reliably and safely. Heatron's new...

Briefs : Energy
White, Electrically Conductive, Radiation-Stable, Thermal Control Coating

A highly reflective, white conductive coating system was developed using a layered approach with a combination of commercially available white conductive pigments within a conductive binder system. The top coating is a space-stable, radiation-resistant, highly reflective...

Briefs : Energy
Piezoelectric Actuated Inchworm Motor (PAIM)

Conventional piezoelectric materials, such as PZTs, have reasonably high electromechanical coupling over 70%, and excellent performance at room temperature. However, their coupling factor (converting electrical to mechanical energy and vice versa) drops substantially at cryogenic temperatures, as the...

Briefs : Energy
Pumped Subsea Energy Storage

A local energy source is desired for near-shore and offshore applications. Gas generators, diesel generators, and long-length submerged power cables tend to be expensive. A proposed solution is to use offshore wind with some type of energy storage mechanism for up to 1 GW-h. Energy storage in batteries is too...

Briefs : Energy
Design for Improving the Flatness of Solar Sails

This work describes a discontinuous or segmented mirror whose overall flatness is less dependent on the limited tension that can be supplied by the booms. A solar sail is a large, nominally flat sheet of extremely thin reflectorized film rigidly attached to a spacecraft, enabling propulsion via...

Briefs : Materials
Negative Dielectric Constant Material Based on Ion-Conducting Materials

Metamaterials, or artificial negative index materials (NIMs), have generated great attention due to their unique and exotic electromagnetic properties. A negative dielectric constant material, which is an essential key for creating the NIMs, was developed by doping ions into...

Briefs : Lighting
Quantum Dot Light Enhancement Substrate

A cost-competitive solution for increasing the light extraction efficiency of organic light-emitting diodes (OLEDs) with efficient and stable color rendering index (CRI) for solid-state lighting (SSL)...

Briefs : Energy
Transparent Conducting Oxides and Undercoat Technologies for Economical OLED Lighting

Economics is a key factor for application of organic light emitting diodes (OLED) in general lighting relative to OLED flat panel displays that can handle high-cost materials such as indium tin oxide (ITO) or indium zinc oxide (IZO) as the transparent...

Briefs : Energy
Hybrid Power Management-Based Vehicle Architecture
Hybrid Power Management (HPM) is the integration of diverse, state-of-the-art power devices in an optimal configuration for space and terrestrial applications. The basic vehicle architecture consists of a primary power source, and possibly other power sources, that provides all power to a common...
Briefs : Energy
GaN-Ready Aluminum Nitride Substrates

The objective of this project was to develop and then demonstrate the efficacy of a cost-effective approach for a low-defect-density substrate on which aluminum indium gallium nitride (AlInGaN) light-emitting diodes (LEDs) can be fabricated. The efficacy of this GaN-ready substrate would then be tested by...

Briefs : Lighting
LED Display Engineering

The primary objective of this project was to develop and implement a method that compensates for the inefficiency of the green light-emitting diode (LED). The proposed engineering solution was to use RGBW combination in every pixel to save energy. A 32" x 16" display with pixel spacing of one inch, which is usually used...

Briefs : Lighting
Self-Activating and Doped Tantalate Phosphors
Phosphors are useful in numerous applications including lighting. Tantalates are very promising materials because they are especially robust and resistant to chemical degradation. Studies have shown that rare-earth tantalates are excellent host lattices for europium (Eu)-doped red-emitting phosphors,...
Briefs : Energy
Carbon Dioxide Removal via Passive Thermal Approaches
A regenerable approach to separate carbon dioxide from other cabin gases by means of cooling until the carbon dioxide forms carbon dioxide ice on the walls of the physical device has been developed. Currently, NASA space vehicles remove carbon dioxide by reaction with lithium hydroxide (LiOH) or...
Briefs : Energy
Polymer Electrolyte-Based Ambient Temperature Oxygen Microsensors for Environmental Monitoring
An ambient temperature oxygen microsensor, based on a Nafion polymer electrolyte, has been developed. A challenge in the operation of Nafion-based sensor systems is that the conductivity of Nafion film depends on the humidity in the film. Nafion film...
Briefs : Energy
Wind Power Plant Short-Circuit Current Contribution for Different Fault and Wind Turbine Topologies

An important aspect of wind power plant impact studies is to evaluate the short-circuit current (SCC) contribution of the plant into the transmission network under various fault conditions such as single, two, and three-phase faults in different...

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