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Crystal Cloak

In computer simulations, researchers at the University of Illinois have demonstrated an approximate cloaking effect created by concentric rings of silicon photonic crystals. The mathematical proof brings scientists a step closer to a practical solution for optical cloaking.

“When light of the correct wavelength strikes...

Blog
Microscope on a Chip

Researchers at the California Institute of Technology have developed a compact, high-resolution microscope small enough to fit on a finger tip. Dubbed an optofluidic microscope, the device operates without lenses but has the magnifying power of a top-quality optical microscope. It can be used in the field to analyze samples...

Blog
Embedded Telescope

Tiny telescopes have long been mounted on glasses to help visually impaired people perform tasks, such as driving. But many potential users have resisted using them due to their appearance, whereby the lens is mounted atop the regular lens or above the frame. Moreover, the magnified view through the telescope is...

Articles: Test & Measurement

Test engineers are facing new pressures to develop high-performance test systems that maximize efficiency. Despite rapidly increasing device complexity, they have to deliver higher-speed...

Application Briefs: Aerospace
STEREO observatories and Solar Probe
Johns Hopkins University Applied Physics Laboratory
Laurel, MD
240-228-5000
www.jhuapl.edu

NASA’s Solar Terrestrial Relations Observatory...

Application Briefs: Sensors/Data Acquisition
Spacecraft leak detection system
Invocon
Conroe, TX
281-292-9903
www.invocon.com

NASA has selected a spacecraft leak detection system from Invocon that would...

Products

Aegis Software, Horsham, PA, has introduced iMonitor 2.0 software that enables manufacturers to create real-time dashboards to monitor their enterprise, factory, and processes through Web browsers. It provides interactive...

Who's Who: Electronics & Computers

As Engineering Branch Chief for NASA's Advanced Supercomputing Division, Bill Thigpen led the team that built and deployed the 10,240-processor Columbia...

Briefs: Electronics & Computers

A hand-held instrument that would include an ultrasonic camera has been proposed as an efficient means of reading matrix symbols. The proposed instrument could be operated without...

Briefs: Information Technology
Visual Data Analysis for Satellites

The Visual Data Analysis Package is a collection of programs and scripts that facilitate visual analysis of data available from NASA and NOAA satellites, as well as dropsonde, buoy, and conventional in-situ observations. The package features utilities for data extraction, data quality control, statistical...

Briefs: Physical Sciences

A method and apparatus have been developed to solve the problem of automated acquisition and tracking, from a location on the ground, of a luminous moving target in the sky. The method...

Briefs: Electronics & Computers

Compact, highly customizable digital receivers are being developed for the system described in "Radar Interferometer for Topographic Mapping of Glaciers and Ice Sheets" (NPO-43962), NASA Tech Briefs,...

Briefs: Information Technology
A Data Type for Efficient Representation of Other Data Types

A self-organizing, monomorphic data type denoted a sequence has been conceived to address certain concerns (summarized below) that arise in programming parallel computers. ["Sequence" as used here should not be confused with "sequence" as the word is commonly understood or with...

Briefs: Semiconductors & ICs

Several improved designs for complementary metal oxide/semiconductor (CMOS) integrated- circuit image detectors have been developed, primarily to reduce dark currents (leakage currents)...

Briefs: Electronics & Computers

A new version of the double-Y balun, transitioning from an unbalanced microstrip to a balanced coplanar strip (CPS) line, has been designed to feed a complementary spiral antenna with an...

Briefs: Electronics & Computers
A Topographical Lidar System for Terrain-Relative Navigation

An imaging lidar system is being developed for use in navigation, relative to the local terrain. This technology will potentially be used for future spacecraft landing on the Moon. Systems like this one could also be used on Earth for diverse purposes, including mapping terrain,...

Briefs: Electronics & Computers

Integrated circuits have been invented for managing the charging and discharging of such advanced miniature energy-storage devices as planar arrays of microscopic energy- storage...

Briefs: Electronics & Computers
Programmable Low-Voltage Circuit Breaker and Tester

An instrumentation system that would comprise a remotely controllable and programmable low- voltage circuit breaker plus several electric- circuit-testing subsystems has been conceived, originally for use aboard a spacecraft during all phases of operation from pre-launch testing through launch,...

Briefs: Manufacturing & Prototyping

This innovation consists of a set of methodologies for preparing large area (>1 cm2) domains of single-atomic-layer graphite, also called graphene, in single...

Briefs: Manufacturing & Prototyping

Solar Power Industries' (SPI) current annual production capacity for processing polycrystalline silicon feedstock into completed solar cells has grown to 40 megawatts, with...

Briefs: Electronics & Computers
Support for Diagnosis of Custom Computer Hardware

The Coldfire SDN Diagnostics software is a flexible means of exercising, testing, and debugging custom computer hardware. The software is a set of routines that, collectively, serve as a common software interface through which one can gain access to various parts of the hardware under test and/or...

Briefs: Information Technology
Providing Goal-Based Autonomy for Commanding a Spacecraft

A computer program for use aboard a scientific- exploration spacecraft autonomously selects among goals specified in high-level requests and generates corresponding sequences of low-level commands, understandable by spacecraft systems. (As used here, "goals" signifies specific scientific...

Briefs: Mechanical & Fluid Systems
Dynamic Method For Identifying Collected Sample Mass

G-Sample is designed for sample collection missions to identify the presence and quantity of sample material gathered by spacecraft equipped with end effectors. The software method uses a maximum-likelihood estimator to identify the collected sample's mass based on onboard force-sensor...

Briefs: Information Technology
Optimal Planning and Problem-Solving

CTAEMS MDP Optimal Planner is a problem- solving software designed to command a single spacecraft/rover, or a team of spacecraft/ rovers, to perform the best action possible at all times according to an abstract model of the spacecraft/rover and its environment. It also may be useful in solving logistical...

Briefs: Information Technology
Attitude-Control Algorithm for Minimizing Maneuver Execution Errors

A G-RAC attitude- control algorithm is used to minimize maneuver execution error in a spacecraft with a flexible appendage when said spacecraft must induce translational momentum by firing (in open loop) large thrusters along a desired direction for a given period of time. The...

Briefs: Information Technology
Grants Document-Generation System

The Grants Document- Generation System (GDGS) software allows the generation of official grants documents for distribution to the appropriate parties. The documents are created after the selection and entry of specific data elements and clauses. GDGS is written in Cold Fusion that resides on an SQL2000 database...

Briefs: Materials
Precipitation-Strengthened, High-Temperature, High-Force Shape Memory Alloys

Shape memory alloys (SMAs) are an enabling component in the development of compact, lightweight, durable, high-force actuation systems particularly for use where hydraulics or electrical motors are not practical. However, commercial shape memory alloys based on NiTi are...

Briefs: Materials

A heat-storage module based on a commercial open-cell graphite foam (PocoFoam or equivalent) imbued with lithium nitrate trihydrate (LiNO3•3H2O) has...

Briefs: Mechanical & Fluid Systems

The balanced-piston relief valve with side vented reaction cavity has been proposed as an improved alternative to a conventional high- pressure, high-flow relief valve. As explained...

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