Stories
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News: Energy
North Carolina State University engineers have developed a new material that would allow a fingernail-size computer chip to store the equivalent of 20 high-definition DVDs or 250 million pages...
Products: Energy
Roughly the size of a postage stamp, the PC-10 ultracapacitor from Maxwell Technologies Inc. (San Diego, CA) has a proprietary electrode for enhancing the reliability of backup power in enterprise...
Products: Energy
Newport Corporation’s Oriel Instruments division (Irvine, CA) has introduced the Oriel IQE-200TM, an instrument that permits simultaneous measurements of the external quantum efficiency (EQE) and the internal quantum...
News: Energy
Today, DOE Deputy Secretary Daniel Poneman announced the winners of the 2009 Solar Decathlon competition on the National Mall in Washington, D.C. The student team from Darmstadt, Germany, won top honors...
News: Green Design & Manufacturing
Researchers at Ohio State University, led by professor Paul Berger, are experimenting with polymer semiconductors that absorb the sun’s energy and generate electricity - with the goal...
News: Green Design & Manufacturing
A strain of yeast, which thrives on turning sugar cane and other tough grasses into ethanol and might be used as biofuel, has had its genome completely sequenced by researchers at...
News: Energy
The EPA has awarded 43 grants to teams of university students who will design technologies addressing sustainability challenges in the developed and developing world. The People, Prosperity, and the...
News: Energy
University of Florida chemists have pioneered a method to tease out promising molecular structures for capturing energy, a step that could speed the development of more efficient, cheaper solar...
News: Energy
A new type of redox flow battery from the Fraunhofer Institute for Chemical Technology (ICT) offers an advantage for electric cars. If the rechargeable batteries are low, the discharged electrolyte fluid can simply be...
News: Energy
Penn State researchers are demonstrating a renewable method for hydrogen production from wastewater at the Napa Wine Company in Oakville, CA. The refrigerator-sized hydrogen...
News: Green Design & Manufacturing
IMEC of Leuven, Belgium has demonstrated a solution-processed organic solar cell with a spray-coated active layer and a metal top contact spray-coated on top. The resulting cell shows...
Application Briefs: Aerospace
AB Precision (ABP) prefers to call its Guardian a vehicle (as in MROV - Miniature Remotely Operated Vehicle) rather than a robot. Names aside, the UK-based engineering company’s quadtracked,...
Briefs: Information Technology
Guaranteeing Failsafe Operation of Extended-Scene Shack-Hartmann Wavefront Sensor Algorithm
A Shack-Hartmann sensor (SHS) is an optical instrument consisting of a lenslet array and a camera. It is widely used for wavefront sensing in optical testing and astronomical adaptive optics. The camera is placed at the focal point of the lenslet array and...
Briefs: Semiconductors & ICs
Three-stage monolithic millimeter-wave integrated-circuit (MMIC) amplifiers capable of providing useful amounts of gain over the frequency range from 120 to 180 GHz have been developed as prototype...
Briefs: Semiconductors & ICs
Closely following the development reported in the article, "Low-Noise MMIC Amplifiers for 120 to 180 GHz" (NPO-42783), three new monolithic microwave integrated circuit (MMIC)...
Briefs: Electronics & Computers
Some logic circuits have been built and demonstrated to work substantially as intended, all as part of a continuing effort to exploit the high degrees of design flexibility and functionality of the...
Briefs: Electronics & Computers
It is possible to synthesize a voltage-controlled negative-differential-resistance (NDR) device or circuit by use of a pair of complementary G4FETs (four-gate field-effect...
News: Transportation
Georgia Tech researchers have developed a new ceramic material that could help expand the applications for solid oxide fuel cells – devices that generate electricity directly from a wide range of liquid...
Briefs: Electronics & Computers
Electrically variable or programmable capacitors based on the unique properties of thin perovskite films are undergoing development. These capacitors show promise of overcoming two...
Briefs: Electronics & Computers
Vector modulators are used to impose baseband modulation on RF signals, but non- ideal behavior limits the overall performance. The non-ideal behavior of the vector modulator is compensated...
Briefs: Materials
Two-Piece Screens for Decontaminating Granular Material
Two-piece screens have been designed specifically for use in filtering a granular material to remove contaminant particles that are significantly wider or longer than are the desired granules. In the original application for which the two-piece screens were conceived, the granular material is...
Briefs: Materials
Rectangular-waveguide inserts that are made of non-ferromagnetic metals and are sized and shaped to function as notch filters have been conceived as reference standards for use in the...
Briefs: Information Technology
Integrated Risk and Knowledge Management Program — IRKM-P
The NASA Exploration Systems Mission Directorate (ESMD) IRKM-P tightly couples risk management and knowledge management processes and tools to produce an effective “modern” work environment. IRKM-P objectives include: (1) to learn lessons from past and current programs (Apollo, Space...
Briefs: Information Technology
A method of constructing certain low-density parity-check (LDPC) codes by use of relatively simple loop-free coding modules has been developed. The subclasses of LDPC codes to which the...
Briefs: Information Technology
Low-density parity-check (LDPC) codes characterized by minimum Hamming distances proportional to block sizes have been demonstrated. Like the codes mentioned in the immediately...
Briefs: Electronics & Computers
MMICs With Radial Probe Transitions to Waveguides
A document presents an update on the innovation reported in “Integrated Radial Probe Transition From MMIC to Waveguide” (NPO-43957), NASA Tech Briefs Vol. 31, No. 5 (May 2007), page 38. To recapitulate: To enable operation or testing of a monolithic microwave integrated circuit (MMIC), it is...
Briefs: Electronics & Computers
Tests of Low-Noise MMIC Amplifier Module at 290 to 340 GHz
A document presents data from tests of a low-noise amplifier module operating in the frequency range from 290 to 340 GHz — said to be the highest-frequency low-noise, solid-state amplifier ever developed. The module comprised a three-stage monolithic microwave integrated circuit (MMIC)...
Briefs: Information Technology
Extending Newtonian Dynamics to Include Stochastic Processes
A paper presents further results of continuing research reported in several previous NASA Tech Briefs articles, the two most recent being “Stochastic Representations of Chaos Using Terminal Attractors” (NPO-41519), [Vol. 30, No. 5 (May 2006), page 57] and “Physical Principle for...
Who's Who: Aerospace
Gary Martin began his career with NASA in the Microgravity Sciences and Applications Division in 1990 where he served as Branch Chief for...
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Webcasts
Upcoming Webinars: Power
Hydrogen Engines Are Heating Up for Heavy Duty
Upcoming Webinars: Electronics & Computers
Advantages of Smart Power Distribution Unit Design for Automotive...
Upcoming Webinars: Transportation
Quiet, Please: NVH Improvement Opportunities in the Early Design...
Upcoming Webinars: Sensors/Data Acquisition
From Spreadsheets to Insights: Fast Data Analysis Without Complex...
Upcoming Webinars: Energy
Battery Abuse Testing: Pushing to Failure
Upcoming Webinars: AR/AI
