-1
12210
30
Briefs: Physical Sciences
A Multicolor Imaging Pyrometer
Physical Sciences Inc. (PSI) designed, constructed, and delivered a prototype passive imaging pyrometer capable of accurately measuring and controlling the temperature distribution across a specified surface. The device was originally designed, under a NASA SBIR contract (solicitation year 1985) monitored by Jet...
Briefs: Physical Sciences
An integrated thin-film device has been designed to constitute the sensory element of a miniature instrument for measuring the concentration of an atomic or molecular species that exhibits fluorescence...
Briefs: Medical
A method of measuring the concentration of a selected organic compound (analyte) in a sample of water involves (1) producing hydrogen peroxide as a byproduct of enzyme-catalyzed...
Briefs: Electronics & Computers
A newly developed instrument, designed at Marshall Space Flight Center, uses the resistance to alternating current running through a device to measure the variances in...
Briefs: Electronics & Computers
Compact analog/digital electronic data processors of a novel type are based on the concept of the optimization cellular neural network (OCNN) and are implemented in very-large-scale...
Briefs: Electronics & Computers
A proposed focal-plane array (FPA) of quantum-well infrared photodetectors (QWIPs) would exhibit peak response at two wavelengths. Heretofore, single-focal-plane arrays of photodetectors optimized for...
Briefs: Electronics & Computers
Passivation by coating with OCG285 (or equivalent) polyimide at critical steps of fabrication has been found to enhance the quality of tapered edges in high-critical-temperature...
Briefs: Electronics & Computers
A diagnostic signal-analysis technique, called the Phase Synchronized Enhancement Method (PSEM), has been developed. This method allows NASA engineers to retrieve any unique defect...
Briefs: Electronics & Computers
Reducing Surface Leakage Currents in FPAs of QWIPs
Chemical surface treatments during fabrication have been proposed to reduce surface leakage currents in focal-plane arrays (FPAs) of quantum-well infrared photodetectors (QWIPs). For reasons explained below, if most or all of the surface leakage currents could be eliminated by such treatments,...
Briefs: Electronics & Computers
Electrochromic devices change color and light transmissivity upon application of an electric charge. As such they should prove valuable as "smart" windows that can reduce air-conditioning costs...
Briefs: Electronics & Computers
As the highest resolution seismic system available, the automated seafloor classification system (ASCS) can remotely and accurately map sediment properties for many seafloor applications. The...
Briefs: Electronics & Computers
Cross-diffraction gratings have been proposed to provide optical coupling to quantum-well infrared photodetectors (QWIPs) in focal-plane arrays (FPAs). The cross-grating coupling scheme is...
Briefs: Photonics/Optics
Laser Doppler velocimetry (LDV) systems have been used for a number of years in field and laboratory applications. The normal LDV system consists of a two-color, four-beam...
Briefs: Electronics & Computers
Image-Matching System Highlights Changes in Skin Lesions
A video imaging and image-data-processing system for use in dermatological examinations acquires and processes images of patients' skins. The system processes a current image of a selected area of a patient's skin along with an image of the same area acquired previously, generating a...
Briefs: Information Technology
A method of computational filtering enables the removal of distortions from flight-test data. The method is built upon and adapts the methods of wavelet-transform analysis to the particular...
Briefs: Software
Software for Modeling Dynamics of Optical Interferometers
The Single Mode Acquisition Code (SMAC) computer program mathematically models the optical, mechanical, and electronic dynamics of high-finesse, long-baseline, multiple-cavity optical interferometers like those used in gravity-wave detectors. Dynamical situations that can be simulated...
Top Stories
INSIDER: Sensors/Data Acquisition
Aya Durbin of Boston Dynamics on Why Humanoids Are the Future of...
Podcasts: Manned Systems
Engineering Spacecraft Components at Scale for Commercial Space Growth
INSIDER: Motion Control
NVIDIA Announces Industry’s First Full-Stack Safety System for Physical...
Blog: Aerospace
NASA Marches Toward Artemis III Mission in 2027
Articles: Aerospace
Blog: Manufacturing & Prototyping
Meet AutoLabs: The New Generative AI Automating Multi-Step Laboratory...
Webcasts
Webinars: AR/AI
From Grid to GPU: Validating Next-Gen AI Data Center Power...
Summits: Power
Hydrogen & Alternative Fuels Summit 2026
Webinars: Manned Systems
Engineering Extended-Range Hybrid Systems
Editorial Webinars: Electronics & Computers
Design for Miniaturization: Meeting the Demand for Smaller,...
Webinars: AR/AI
Why Your Integration Stack Is Blocking Your AI Roadmap
Editorial Webinars: Power
