May 2008

Briefs: Photonics/Optics
Fast Offset Laser Phase-Locking System

Figure 1 shows a simplified block diagram of an improved optoelectronic system for locking the phase of one laser to that of another laser with an adjustable offset frequency specified by the user. In...

A fiber-optic sensor system has been developed that can remotely measure the concentration of molecular oxygen (O2), nitrogen...

Aria Analytics is commercializing a novel analytical technology to characterize liquids for healthcare and industrial applications. As a drop of liquid evaporates on the...

Dr. William Farrell, a scientist with the Lunar Exploration Program at Goddard Space Flight Center, is an expert on the problem of lunar dust and its effects on astronauts and...

Articles: Aerospace
Fly-by-Wireless: A Less-Wire and Wireless Revolution for Aerospace Vehicle Architectures

Every ounce of weight brought to the lunar surface costs 40 to 60 times that in fuel needed at liftoff from the Earth. Part of that weight penalty is due to wires, but the cost of wires is much more than weight. Wired connectivity drives up the price of...

Techs for License
Microbial-Based Lawn-Care, Pond-Care, and Cleaning Technologies

Proprietary microbial systems use naturally occurring microbes in lieu of chemicals in fertilizers, microbial inoculants, cleaning products, and pond treatments. Products are based on incorporating beneficial micro-organisms with a variety of task-specific organic surfactants,...

Tech Needs
Intelligent Multi-Sensor Control Systems to Manage Lighting

Technology is needed to generate a change in the ambience of a given space. The technology must interpret a number of sensory changes within a room in order to change other parameters. Of specific interest is software that interprets multi-sensor data and the consequence hardware to...

Tech Needs
Testing and Analysis for Measuring Food Qualities

A food company seeks ways of objectively measuring and analyzing taste, mouth feel, texture, flavor, and eating quality of foods, leading to an analysis method that is accurate and repeatable across many foods and across time.

Respond to this TechNeed at:

...

All electronic devices generate heat due to their unavoidable internal losses and inefficiencies. The higher the efficiency rating of the device, the less internal heat is generated...

Articles: Electronics & Computers
Prototyping PMC Daughterboards

The PMC, or PCI Mezzanine Card, follows the IEEE P1386.1 standard for printed circuit boards. PMCs combine the electrical characteristics of the PCI bus with the mechanical dimensions of the Common Mezzanine...

Articles: Electronics & Computers
Touch Screen Technology 101

What makes the iPhone so great? Touch screen technology. Touch screens are changing the way we interact with technology and with iPhone, Apple has opened the floodgates of innovation for the function and design of...

Application Briefs: Electronics & Computers
The Virtual Becomes Reality at Iowa State University

The colonel has a problem. He has eight unmanned aerial vehicles (UAVs) flying over the outskirts of Baghdad, looking for potential insurgent activity. Are those people he sees moving...

Products: Electronics & Computers
EPIC Single Board Computer

Diamond Systems (Mountain View, CA) has announced Neptune, an ultra-high-integration EPIC form factor single board computer that combines state-of-the-art CPU and I/O technology with Diamond Systems' high accuracy...

Products: Electronics & Computers
Quad- and Dual-Core Processors

Intel Corporation (Santa Clara, CA) has released new processors with extended seven-year lifecycle support, a new chipset, and a carrier-grade server. The processors are based on Intel's high-k, metal gate...

Products: Electronics & Computers
New Embedded Form Factor

Congatec AG (Deggendorf, Germany) and SECO (Arezzo, Italy) have jointly created a new form factor for embedded computing. The Qseven format will complement the low power and small size of next-generation embedded...

Luminary Micro (Austin, TX) has released communications modules and reference design kits for Ethernet-enabled display applications and serial- to-Ethernet communications...

Products: Electronics & Computers
Separation Kernel and Embedded Hypervisor

LynuxWorks (San Jose, CA) unveiled the LynxSecure 2.0, its next-generation separation kernel and embedded hypervisor. LynxSecure 2.0 virtualizes the underlying hardware to enable multiple different...

Products: Electronics & Computers
Potting and Encapsulation UV Adhesive

Master Bond (Hackensack, NJ) has introduced Master Bond UV10SP-2A, a one-component, flexible, UV curable polymer system for bonding, sealing, and coating with an attractive balance of pertinent physical,...

Products: Electronics & Computers
CompactPCI Camera Link Frame Grabber

Active Silicon (Chelmsford, MA) has released the Phoenix D48CL-3CPCI32, a conduction-cooled, 3U CompactPCI Camera Link frame grabber. Designed for extremely rugged environments, the Phoenix operates in...

Products: Electronics & Computers
Multi-I/O PMC

Aitech Defense Systems Inc. (Chatsworth, CA) offers a compact, multi-I/O PMC for I/O environments. The low-power, single-width M705 features up to five dual-channel, dual-redundant MIL-STD-1553B channels, 16 ARINC-429 receive...

Products: Electronics & Computers
Oscilloscopes

Agilent Technologies Inc. (Santa Clara, CA) expanded its mixed-signal and digital-storage oscilloscope portfolio with 10 new models that comprise its InfiniiVision 7000 Series. The InfiniiVision 7000 Series offers bandwidths up...

Products: Electronics & Computers
Data Acquisition Cards

Strategic Test Corp. (Woburn, MA) offers two new 250 kHz 16-bit data acquisition cards for PCI Express. The UF2e-4721 has 16 analog inputs and the UF2e-4020 has 8 channels. Features include the options for dual-...

Products: Electronics & Computers
MicroTCA System

Emerson Network Power (Tempe, AZ) has released the Centellis™ 500, a fully deployable MicroTCA™ system that uses innovative plastic packaging, and Emerson's MicroTCA Carrier Hub (MCH) and high-performance...

Blog
Fog and Smoke

University of California at San Diego computer scientists have created a fog and smoke machine for computer graphics that cuts the computational cost of making realistic smoky and foggy 3-D images, such as beams of light from a lighthouse piercing thick fog. By cutting the computing cost for creating highly realistic imagery from...

Blog
Molecular Movies

Scientists at the U.S. Department of Energy's (DOE) Argonne National Laboratory have developed techniques to create accurate movies of biological and chemical molecules. Scientists using the high-intensity X-rays at the Advanced Photon Source have measured images that are "blurred" by these motions and have used them to create...

A silicon photomultiplier (SPM) is a new type of semiconductor detector that has the potential to replace the photomultiplier tube (PMT) detector in many applications. In common with a PMT...

Application Briefs: Photonics/Optics
Biomedical Imaging Using Ultrashort Laser Pulses

The field of optical microscopy experienced significant gains in resolution and speed following the introduction of lasers. Unfortunately, these gains came at the expense of sample degradation...

Briefs: Photonics/Optics
MACOS Version 3.31

Version 3.31 of Modeling and Analysis for Controlled Optical Systems (MACOS) has been released. MACOS is an easy-to-use computer program for modeling and analyzing the behaviors of a variety of optical systems, including systems that have large, segmented apertures and are aligned with the technology of wavefront sensing and...

A theoretical analysis of photon-arrival jitter in an optical pulse-position-modulation (PPM) communication channel has been performed, and now constitutes the basis of a methodology for...

Point Source (Hamble, UK) introduces the iFLEX-Mustang, a fiber-coupled solid-state laser with on-board modulation. Using single-mode and polarization preserving fiber, the iFLEX-Mustang...

Products
Laser Bars

OSRAM Opto Semiconductors (Santa Clara, CA) offers laser bars with a wavelength of 910 to 980 nm that achieve an optical output of 120W under real-world conditions and a typical efficiency of 70%. The laser bars have a 50% fill...

Toshiba Imaging Systems Division (Irvine, CA) introduces the remote head IK-TF7H7U camera. The progressive scan model delivers true color video output of 1024 × 768 pixels at 30 frames per second at full frame and up to...

Optical Surfaces Ltd. (Surrey, UK) offers Fabry-Perot etalons in a range of shapes and sizes up to 150 mm in diameter with matching accuracies to lambda/300. Etalons are used in telecommunications, lasers, and...

SCHOTT (San Jose, CA) introduces infrared (IR) materials, including Zinc Sulfide (ZnS) and Infrared Chalcogenide glasses. SCHOTT offers its IR material in large sizes and custom shapes, and as windows, domes, or lens...

Extech Instruments (Waltham, MA) introduces its InfraCAMTM SD Thermal Imaging InfraRed Camera that enables the proactive condition monitoring of electrical systems to detect hot spots and avoid...

Optical Research Associates (Pasadena, CA) introduces CODE V® 9.81 optical design software with aspheric lens tolerancing capabilities that are valuable in the fabrication of optical elements. The Fabrication Data...

Gamma Scientific, Inc. (San Diego, CA) introduces the RadOMA-LED Goniometric System for LED angular and LED spectral measurements. The system combines the RadOMA multi-element array technology with Gamma’s 940...

Aculight Corporation (Bothell, WA) introduces an improved ArgosTM single-frequency, continuous-wave (CW) optical parametric oscillator (OPO). Argos provides multi-Watt, widely tunable output in the near- to...

The Fastcam SA3 from Photron, Inc. (San Diego, CA) is a megapixel, high-speed video imaging system designed to withstand high-G and rugged environments. Ideal for automotive safety testing, the camera features...

The Imaging Solutions Group (ISG) (Rochester, NY) offers the 5-megapixel LightWise LW-5-S-1394 camera in color and monochrome versions. All camera controls are done via the 1394 interface, which includes a fully...

Princeton Instruments (Acton, MA) introduces the Acton Advanced Series of monochromators and spectrographs that combines high precision computer-controlled motorized slits, interchangeable triple grating...

Bartington Instruments (Oxfordshire, England) offers a new version of software for its Spectramag-6 Data Acquisition system. The Spectramag-6 combines PC-based data storage/display with a separate signal...

Prior Scientific (Rockland, MA) introduces the H117LSM ProscanTMII flat top motorized stages designed specifically for Carl Zeiss laser scanning microscopes, specifically the Axiovert 200 and AxioOberver...

Products
LED Package

The OVS5WBCR4 Series from OPTEK Technology (New York, NY) is a 0.5W surface mount white LED package with an ultra-low profile of 1.5 mm. This LED package has a 120° viewing angle and water clear lens. The typical luminous flux...

The Keyence GV Series Digital CMOS Laser Sensor from Keyence (Woodcliff Lake, NJ) uses a DATUM Algorithm to stably detect targets. The GV is an optical triangulation sensor, and it excels in detecting shiny objects...

Labsphere’s (North Sutton, NH) Spectralon® Laser Pump Reflectors offer greater than 99 percent reflectance, beam stability, and uniformity. They have a high level of diffusion efficiency coupled with economical...

Products
Thermal Camera

The Jade LR is a high-performance thermal camera from Cedip Infrared Systems (Croissy-Beaubourg, France). The camera provides long-range images from fixed position surveillance applications, including passive observation,...

Products
CMOS Camera

Intevac, Inc. (Santa Clara, CA) announced the MicroVistaTM–NIR, a back-thinned CMOS camera optimized for near-infrared imaging with 100% fill factor and proprietary anti-reflection coatings. Applications for the...

Cicoil (Valencia, CA) has released water-repellent silicone cables that are impervious to immersion, high humidity, fungus, and damp operating environments. Also, extremely dry conditions, low humidity, or salt spray...

Hamamatsu Corporation (Bridgewater, NJ) has introduced the C10054 series of compact Intensified CCD (ICCD) cameras for capturing still images or continuous video of high-speed or ultra-low-light phenomena. Key features...

The electron multiplication 12-bit CCD camera system from The Cooke Corporation (Romulus, MI) has a resolution of 1004 × 1002 pixels and is suitable for extreme low-light camera applications. The system features...

Two new Smart ForceTM LED driver boards from Endicott Research Group (Endicott, NY) provide wide range dimming, wide input voltage, and full brightness. The SFDL Series driver board provides high efficiency power...

Mouser Electronics, Inc. (Mansfield, TX) has expanded its C&D Technologies portfolio to include the DMS-30DR series daylight-readable digital panel meters. The DMS-30DR series of large, 0.56-inch high, super-bright red...

Products
CO2 Lasers

A new series of low-power, continuous-wave (CW) CO2 lasers from Coherent, Inc. (Santa Clara, CA) now offers high reliability operation for OEM applications. The new DIAMOND C Series consists of sealed lasers with output...

Briefs: Medical
Hand-Held Units for Short-Range Wireless Biotelemetry

Special-purpose hand-held radio- transceiver units have been proposed as means of short-range radio powering and interrogation of surgically implanted microelectromechanical sensors and actuators. These units are based partly on the same principles as those of the units described in...

Telemetry systems of a type that have been proposed for the monitoring of physiological functions in humans would include the following subsystems:

Surgically implanted...
Briefs: Electronics & Computers
Electronic Escape Trails for Firefighters

A proposed wireless- communication and data-processing system would exploit recent advances in radio- frequency identification devices (RFIDs) and software to establish information lifelines between...

Briefs: Mechanical & Fluid Systems
Deployable Wireless Camera Penetrators

A lightweight, low-power camera dart has been designed and tested for context imaging of sampling sites and ground surveys from an aerobot or an orbiting spacecraft in a microgravity environment. The...

Electrostatically actuated nano- electromechanical switches based on carbon nanotubes have been fabricated and tested in a continuing effort to develop high-speed switches for a...

A power converter now undergoing development is required to operate at a DC input potential ranging between 5.5 and 10 kV and a DC output potential of 400 V at a current up to 25 A....

The figure shows a prototype radial power-combining waveguide structure, capable of operation at frequencies from 31 to 36 GHz, that features an unusually large number (N = 24) of...

Briefs: Electronics & Computers
Three-Stage InP Submillimeter-Wave MMIC Amplifier

A submillimeter-wave monolithic integrated- circuit (S-MMIC) amplifier has been designed and fabricated using an indium phosphide (InP) 35-nm gate-length high electron mobility transistor...

Briefs: Electronics & Computers
Solid-State High-Temperature Power Cells

All-solid-state electrochemical power cells have been fabricated and tested in a continuing effort to develop batteries for instruments for use in environments as hot as 500 °C. Batteries of this...

Briefs: Manufacturing & Prototyping
Direct Metal Laser-Sintering of Titanium

During the first decade of direct metal laser-sintering (DMLS), the metals employed were generally ones developed specifically for DMLS, rather than those used in traditional metalforming methods. But...

A microfluidic system has been designed to survive spaceflight and to function autonomously on the Martian surface. It manipulates microscopic quantities of liquid water and...

Briefs: Manufacturing & Prototyping
Fabricating High-Resolution X-Ray Collimators

A process and method for fabricating multi-grid, high-resolution rotating modulation collimators for arcsecond and sub-arcsecond x-ray and gamma-ray imaging involves photochemical machining and precision stack lamination. The special fixturing and etching techniques that have been developed are used...

Briefs: Mechanical & Fluid Systems
Flipperons for Improved Aerodynamic Performance

Lightweight, piezoelectrically actuated bending flight-control surfaces have shown promise as means of actively controlling airflows to improve the performances of transport airplanes. These...

Briefs: Mechanical & Fluid Systems
System Estimates Radius of Curvature of a Segmented Mirror

A system that estimates the global radius of curvature (GRoC) of a segmented telescope mirror has been developed for use as one of the subsystems of a larger system that exerts precise control over the displacements of the mirror segments. This GRoC-estimating system, when integrated...

Briefs: Physical Sciences
Compact, Highly Stable Ion Atomic Clock

A mercury-ion clock now at the breadboard stage of development (see figure) has a stability comparable to that of a hydrogen-maser clock: In tests, the clock exhibited an Allan deviation of between 2...

Composite truss structures are being developed that can be compacted for stowage and later deploy themselves to full size and shape. In the target applications, these "smart" structures...

Workers at NASA Ames Research center are endeavoring to develop durable, oxidation- resistant, foam thermal protection systems (TPSs) that would be suitable for covering large exterior...

Lithium tetrakis(trifluoro- methanesulfonato) gallate [abbreviated “LiGa(OTf)4” (wherein “OTf” signifies trifluoro- methanesulfonate)] has been found to be promising as...

Briefs: Materials
Molecules for Fluorescence Detection of Specific Chemicals

A family of fluorescent dye molecules has been developed for use in "on-off" fluorescence detection of specific chemicals. By themselves, these molecules do not fluoresce. However, when exposed to certain chemical analytes in liquid or vapor forms, they do fluoresce (see figure). These...

Briefs: Materials
Fuel-Cell Electrolytes Based on Organosilica Hybrid Proton Conductors

A new membrane composite material that combines an organosilica proton conductor with perfluorinated Nafion material to achieve good proton conductivity and high-temperature performance for membranes used for fuel cells in stationary, transportation, and portable applications...

A diamond turning process has made possible a significant advance in the art of whispering-gallery- mode (WGM) optical resonators. By use of this process, it is possible to fashion...

A design has been formulated for a proposed improved version of an apparatus that simulates atmospheric effects of human respiration by introducing controlled amounts of carbon dioxide, water vapor, and...

Briefs: Physical Sciences
Compact Dielectric-Rod White-Light Delay Lines

Optical delay lines of a proposed type would be made from rods of such dielectric materials as calcium fluoride, fused silica, or sapphire. These would offer advantages over prior optical delay lines, as summarized below.

A unique and customizable machine-vision and image-data-processing technique has been developed for use in automated identification of cells that are optimal for patch clamping. [Patch...

In the effort to produce inexpensive, easily manufactured sources of sustainable, renewable power, solar cells continue to be a major focus — particularly flexible solar cells...

Briefs: Information Technology
Spiking Neurons for Analysis of Patterns

Artificial neural networks comprising spiking neurons of a novel type have been conceived as improved pattern- analysis and pattern- recognition computational systems. These neurons are represented by a mathematical model denoted the state- variable model (SVM), which among other things, exploits a...

Briefs: Information Technology
Symmetric Phase-Only Filtering in Particle-Image Velocimetry

Symmetrical phase-only filtering (SPOF) can be exploited to obtain substantial improvements in the results of data processing in particle- image velocimetry (PIV). In comparison with traditional PIV data processing, SPOF PIV data processing yields narrower and larger amplitude...

Briefs: Physical Sciences
Efficient Coupler for a Bessel Beam Dispersive Element

A document discusses overcoming efficient optical coupling to high orbital momentum modes by slightly bending the taper dispersive element. This little shape distortion is not enough to scramble the modes, but it allows the use of regular, free-beam prism coupling, fiber coupling, or planar...

Briefs: Mechanical & Fluid Systems
Attitude and Translation Control of a Solar Sail Vehicle

A report discusses the ability to control the attitude and translation degrees-of-freedom of a solar sail vehicle by changing its center of gravity. A movement of the spacecraft's center of mass causes solar- pressure force to apply a torque to the vehicle. At the compact core of the...

Articles: Sensors/Data Acquisition
Performance of 1mm² Silicon Photomultipliers

A silicon photomultiplier (SPM) is a new type of semiconductor detector that has the potential to replace the photo- multiplier tube (PMT) detector in many applications. In common with a PMT...

Application Briefs: Sensors/Data Acquisition
Advanced Position Sensors to Aid NASA in Future Spaceflight
Silicon carbide-based position sensors
INPROX Technology Corp.
Boston, MA
617-573-5158
www.inproxtechnology.com

INPROX Technology Corp. (ITC) has entered into a Space Act Agreement (SAA) with NASA’s John H. Glenn Research Center in Ohio to develop advanced...

Application Briefs: Motion Control
Simulated Models Test Design of Space Shuttles and Rocket Engines
Finite element modeling and analysis
Dynamic Concepts
Huntsville, AL
256-922-9888
www.dynamic-concepts.com

NASA tasked Dynamic Concepts (DCI) with assessing the structural dynamics of the rollout process, whereby the space shuttle orbiter, external tank,...

Briefs: Physical Sciences
MACOS Version 3.31

Version 3.31 of Modeling and Analysis for Controlled Optical Systems (MACOS) has been released. MACOS is an easy-to-use computer program for modeling and analyzing the behaviors of a variety of optical systems, including systems that have large, segmented apertures and are aligned with the technology of wavefront sensing and...

Products
PX Series Photoelectric Sensors

The KEYENCE PX Series rugged photoelectric sensors from Keyence Corp. of America, Woodcliff Lake, NJ, feature an IP-69K environmental rating for highpressure (1,400 psi) applications at temperatures to 176°F. They feature stainless steel casings, sensor heads backfilled with epoxy under vacuum conditions, and...

A theoretical analysis of photon-arrival jitter in an optical pulse-position- modulation (PPM) communication channel has been performed, and now constitutes the basis of a methodology for...

Podcasts
Exclusive Interview With the Director of 'Westinghouse'

Westinghouse is a fascinating new feature-length documentary about the life and times of George Westinghouse, one of America's greatest inventors, entrepreneurs, and industrialists. Listen to our interview with the writer and director, Mark Bussler, as he discusses this "forgotten giant" --...

Blog
Globular Clusters

A new study using NASA's Chandra X-ray Observatory indicates that globular clusters might be surprisingly less mature in their development than previously thought. Globular clusters are dense bunches of up to millions of stars that are found in the outskirts of galaxies, including the Milky Way. Understanding the nature of...

Blog
Harmful Silver

For years, scientists have known about silver's ability to kill harmful bacteria and, recently, have created consumer products containing silver nanoparticles. Now, a University of Missouri researcher has found that silver nanoparticles also may destroy benign bacteria that are used to remove ammonia from wastewater treatment...

Blog
The Forgotten Giant

“You can be sure if it’s Westinghouse.”

Raise your hand if you recall that signature line from Westinghouse TV commercials, or if you grew up in a household with Westinghouse appliances. A lot of hands, I’m sure. Far fewer if I were to ask how many still used Westinghouse products today. As...

Blog
Cellular Medical Images

A process to transmit medical images via cellular phones, developed by Hebrew University of Jerusalem researcher Prof. Boris Rubinsky, could provide sophisticated radiological diagnoses and treatment to most of the world's population lacking access to such technology. Designed to replace stand-alone medical imaging...

Blog
Current Attractions

The Keyence PX Series rugged photoelectric sensors from Keyence Corp. of America have been selected as NTB's Product of the Month for May. The sensors feature an IP-69K environmental rating for high pressure (1,400 psi) applications at temperatures to 176 degrees F. They feature stainless steel casings, sensor heads...

Blog
Brain Enzyme

Activation of the brain enzyme CaMKK2 is one step in the appetite stimulation pathway located in the hypothalamus section of the brain. Duke University Medical Center researchers blocked CaMKK2 in mice to tone down appetite, promote weight loss, and manage blood sugar.

The researchers blocked the enzyme with a specialized...

Podcasts: Software
Multiphysics - A Guided Tour

Sponsored by COMSOL

Recorded February 27, 2008

In this podcast, COMSOL Branch Manager, David Kan, speaks with NASA Tech Briefs Editorial Director, Linda Bell, about the wide range of challenging design problems that can now be easily tackled by applying multiphysics modeling and simulation...

Blog
Exploding Stars

Robert Fisher and Cal Jordan of the Flash Center are among a team of scientists who will expend 22 million computational hours during the next year on the Blue Gene/P supercomputer at Argonne National Laboratory. The Flash Center will devote its computer allocation to studying Type Ia supernovas, in which temperatures reach...

Blog
Sulfate Sunscreen

According to a study conducted by the National Center for Atmospheric Research (NCAR), proposals to offset global warming by artificially seeding the stratosphere with sulfate particles could do more harm than good by having a negative impact on Earth's protective ozone layer. Such a plan might not only delay recovery of the...

Blog
Microscope Illumination System

Researchers at Auburn University have designed a rechargeable microscope illumination system that can be used by NASA scientists to observe microscopic life in places where there is no electricity. The patent-pending Ilumna 120, which contains a battery pack, condenser, and bulb with a built-in collimator, attaches...

Blog
Cell-Based Sensors

Cell-based sensors on a chip, which could speed up and improve the detection of everything from explosive materials to biological pathogens, are closer to reality, thanks to researchers at the University of Maryland's A. James Clark School of Engineering. The researchers - Benjamin Shapiro, Pamela Abshire, and Elisabeth Smela...

Blog
Current Attractions

In the effort to produce inexpensive, easily manufactured sources of sustainable, renewable power, solar cells continue to be a major focus - particularly flexible solar cells that can be applied directly to surfaces. Flexible solar cells are nothing new, but the methods by which they are made have progressed significantly in...

Blog
Sensing Explosives

Researchers at the University of Massachusetts Amherst have created complex molecules containing zinc for use in portable sensors that detect the presence of plastic explosives. Sensors containing the zinc complexes are the first devices that allow the user to identify which type of explosive is present, since each metal...

Blog
"Already August" A Spring Surprise

I didn't go to Wakefield, Rhode Island looking for great music.

I was there to see the new U.S. headquarters of Dewetron, a leading manufacturer of data acquisition equipment and long-time NASA Tech Briefs advertiser. The last stop on our tour was a closed door, behind which was a small room that...

Blog
NASA Briefs

The Langley Research Center has developed an innovative method for acquiring fluid-level measurements. This method eliminates the need for the fluid-level sensor to have a physical connection to a power source or data acquisition equipment. The complete system consists of a lightweight, thin-film magnetic-field-response fluid-level...

Blog
Satellites Allow View Into Ancient Past

Satellite imagery obtained from NASA will help archeologist Bill Middleton of the Rochester Institute of Technology peer into the ancient Mexican past. Multi- and hyperspectral data will help build the most accurate and most detailed landscape map of the southern state of Oaxaca, where the Zapotec people...

Blog
Focusing on Ultrashort Laser Pulses

Lasers that emit ultrashort pulses of light can be used for numerous applications including micromachining, microscopy, laser eye surgery, spectroscopy and controlling chemical reactions. However, the quality of the results is limited by distortions caused by lenses and other optical components that are part...

Blog
NCAR's New Supercomputer

The National Center for Atmospheric Research (NCAR) has taken delivery of a new IBM supercomputer that will advance research into severe weather and the future of Earth's climate. The supercomputer, known as a Power 575 Hydro-Cluster, will be used by scientists at NCAR and across the country to accelerate research into...

Blog
Communicating Underground

To improve wireless communications for emergency responders, researchers at the National Institute of Standards and Technology (NIST) have confirmed that underground tunnels - generally a difficult setting for radios - can have a frequency "sweet spot" at which signals may travel several times farther than at other...

Blog
Fuel Cell Material

Engineers at the Massachusetts Institute of Technology have improved the power output of methanol fuel cells by more than 50 percent, which could broaden fuel cell applications to include portable electronics. The engineers achieved this by developing an alternative to Nafion, the material commonly used as the electrolyte...

Blog
Melanoma Risk

It is known that prolonged exposure to the sun's harmful UV rays can lead to melanoma, but an unanswered question is why some people are more likely to develop melanoma than others. Researchers from the Translational Genomic Research Institute (TGen) in Phoenix, Arizona and the Queensland Institute of Medical Research (QIMR) in...

Blog
NASA Briefs

A method of promoting healing of injured or diseased neurons from Ames Research Center involves pharmacological activation of the STAT3 alpha protein. Injured or diseased neurons heal incompletely or not at all because they are susceptible to apoptosis (cell death), or because they fail to engage in axogenesis - that is, they fail to...

Videos