Question of the Week
Will the iPad be a game-changer in the world of personal electronics?

This week’s question concerns the much-anticipated unveiling of the Apple iPad tablet computer/book reader/music, movie, and video player. At $499, Apple touts the device as a bridge between smartphones and laptops. Tech critics say it’s nothing more than a big iPhone.

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Uses for traditional optical time domain reflectometers, or “OTDRs” include the certification and troubleshooting of very long-haul fiber optic networks such as campus and metro networks. In...

Application Briefs: Photonics/Optics
Demystifying Optical Ethernet Networks

The TDM-to-packet network transformation has been underway in transport/ telecommunications networks for some years now, fueled primarily by two trends: (a) the advent of triple-play (voice, video,...

L-3 Infrared Products (Dallas, TX) has launched the first commercially available high-resolution Thermal-Eye Series 17-640 thermal imager. The 17-640 features a high-performance amorphous silicon...

Products: Test & Measurement
Keyence IM-6000 Series

Keyence Corporation of America, Woodcliff Lake, NJ, has introduced the IM-6000 Series dimension measurement and inspection system that features pattern registration and pattern search functions for “place and...

As devices for disease detection and diagnosis become more advanced, they also are becoming smaller. Next-generation technologies for faster detection of diseases such as cardiovascular disease,...

QE65000 Spectrometer
Ocean Optics
Dunedin, FL
727-733-2447
www.oceanoptics.com

An Ocean Optics QE65000 spectrometer has contributed measurements to the...

Application Briefs: Sensors/Data Acquisition
Near-Infrared Cameras Indicate Signature of Water on the Moon
InGaAs shortwave infrared (SWIR) cameras
Sensors Unlimited, Goodrich Corp.
Princeton, NJ
609-520-0610
www.sensorsinc.com

Shortwave infrared (SWIR)...

The figure depicts selected aspects of an apparatus for testing thermal-insulation materials for cryogenic systems at temperatures and under vacuum or atmospheric conditions representative...

Briefs: Physical Sciences
Optical Testing of Retroreflectors for Cryogenic Applications

A laser tracker (LT) is an important coordinate metrology tool that uses laser interferometry to determine precise distances to objects, points, or surfaces defined by an optical reference, such as a retroreflector. A retroreflector is a precision optic consisting of three orthogonal...

An improved method and apparatus have been devised for measuring cyclic errors in the readouts of laser heterodyne interferometers that are configured and operated as displacement...

A method is proposed for end-toend, full aperture testing of large-aperture telescopes using an innovative variation of a Hartmann mask. This technique is practical for telescopes...

The figure schematically depicts a laboratory setup for determining the optical length of a fiber-optic delay line at a precision greater than that obtainable by use of optical...

Briefs: Semiconductors & ICs
Compact, Reliable EEPROM Controller

A compact, reliable controller for an electrically erasable, programmable readonly memory (EEPROM) has been developed specifically for a space-flight application. The design may be adaptable to other applications in which there are requirements for reliability in general and, in particular, for prevention of...

The design, simulation, and characterization of a novel Ka-band (32.05±0.25 GHz) rectangular waveguide two-way branch-line hybrid unequal power combiner (with port impedances...

Briefs: Semiconductors & ICs
Quad-Chip Double-Balanced Frequency Tripler

Solid-state frequency multipliers are used to produce tunable broadband sources at millimeter and submillimeter wavelengths. The maximum power produced by a single chip is limited by the electrical breakdown of the semiconductor and by the thermal management properties of the chip. The solution is to...

Briefs: Semiconductors & ICs
Radiation-Hardened Solid-State Drive

A method is provided for a radiationhardened (rad-hard) solid-state drive for space mission memory applications by combining rad-hard and commercial offthe- shelf (COTS) non-volatile memories (NVMs) into a hybrid architecture. The architecture is controlled by a rad-hard ASIC (application specific integrated...

Briefs: Electronics & Computers
Reconfigurable Hardware for Compressing Hyperspectral Image Data

High-speed, low-power, reconfigurable electronic hardware has been developed to implement ICER-3D, an algorithm for compressing hyperspectral-image data. The algorithm and parts thereof have been the topics of several NASA Tech Briefs articles, including “Context Modeler for...

Briefs: Electronics & Computers
High-Speed Ring Bus

The high-speed ring bus at the Jet Propulsion Laboratory (JPL) allows for future growth trends in spacecraft seen with future scientific missions. This innovation constitutes an enhancement of the 1393 bus as documented in the Institute of Electrical and Electronics Engineers (IEEE) 1393-1999 standard for a spaceborne...

A spatio-temporal equalizer has been conceived as an improved means of suppressing multipath effects in the reception of aeronautical telemetry signals, and may be adaptable to...

Briefs: Electronics & Computers
Lunar Dust-Tolerant Electrical Connector

An electrical connector was developed that is tolerant of the presence of lunar dust. Novel features of the connector include the use of a permeable membrane to act both as a dust barrier and as a wiper to limit the amount of dust that makes its way into the internal chamber of the connector. The...

Nanoionics-based devices have shown promise as alternatives to microelectro-mechanical systems (MEMS) and semiconductor diode devices for switching radio-frequency (RF) signals in...

Techs for License
Positive-Locking Fastener

Phil-Lok Fastener

Most locking fastener systems use some sort of vibrationresistant method to prevent fastener loosening. The most common method is the lock washer, in use for over 100 years. Although lock washers will inhibit rotation of the nut by increasing friction, they do not provide a positive rotation...

Techs for License
Low-Cost “Green” Coatings Modify Metal Surfaces

GreenKote

Greenkote coating technology is a coating method for steel and other metals that can replace a range of existing coating methods. The coating is environmentally friendly, and it is applicable to a range of base materials. In the process, parts are introduced to a rotating...

Tech Needs
Technology for Drilling, Cutting, and Separating Materials

A company seeks alternative methods for sawing, drilling, boring, cutting, or otherwise separating materials such as wood, metal, and composites. When compared to conventional methods, the new technology should be faster, easier, provide a cleaner cut in terms of smoothness and dust in...

Tech Needs
Improving Thermoplastic Performance Using Additives and Reinforcers

A company seeks to improve the performance properties of polyolefins, polyethylenes, and thermoplastics. Additives, ingredients, fillers, modifiers, agents, and other methods are all of interest. Properties of interest include lighter weight, higer modulus, increased tensile...

John C. Stennis Space Center provides rocket engine propulsion testing for the NASA space programs. Since the development of the Space Shuttle, every Space Shuttle Main Engine...

Briefs: Information Technology
ICER-3D Hyperspectral Image Compression Software

Software has been developed to implement the ICER-3D algorithm. ICER-3D effects progressive, threedimensional (3D), wavelet-based compression of hyperspectral images. If a compressed data stream is truncated, the progressive nature of the algorithm enables reconstruction of hyperspectral data at...

Briefs: Information Technology
Context Modeler for Wavelet Compression of Spectral Hyperspectral Images

A context-modeling subalgorithm has been developed as part of an algorithm that effects three-dimensional (3D) wavelet-based compression of hyperspectral image data. The context-modeling subalgorithm, hereafter denoted the context modeler, provides estimates of probability...

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