Keyword: Production

Briefs: Photonics/Optics

A method and apparatus for mapping between the positions of fibers at opposite ends of incoherent fiber-optic bundles have been invented to enable the use of such bundles to transmit images in...

Briefs: Medical

The figure schematically depicts a system of electronic hardware and software that noninvasively tracks the direction of a person’s gaze in real time. Like prior commercial noninvasive...

Briefs: Physical Sciences

A device that includes a rectangular-waveguide / slot-antenna structure and permanent magnets has been devised as a means of generating a substantially uniform plasma over a...

Articles: Photonics/Optics

For the last forty years, manufacturing technology for diffraction gratings has not changed significantly. Mechanical ruling and interferometric...

Application Briefs: Photonics/Optics

As the volume of consumer electronics increases, semiconductor fabrication plants are manufacturing larger and larger wafers to handle the demand (e.g., 300 mm substrates). The escalating...

Articles: Manufacturing & Prototyping

The 2006 NASA Tech Briefs (NTB) and Photonics Tech Briefs (PTB) Readers’ Choice Product of the Year Awards were presented recently by the editors of NTB and PTB at an awards dinner...

Articles: Imaging

Over the last decade, the unprecedented population growth rates throughout much of the world and the subsequent need for information to support and manage that growth has put more...

Application Briefs: Electronics & Computers
HANABI HVS-3800HS Multi-Bit Rate Switcher
FOR-A
Waltham, MA
714-867-3311
www.for-a.com

NASA’s Goddard Space Flight Center (GSFC) in Greenbelt, MD,...

Articles: Manufacturing & Prototyping
By Steve Luby
President & Chief Executive Officer
VISTAGY, Inc.
Waltham, MA

Today, every company is searching for a sustainable competitive advantage, and getting great...

Briefs: Manufacturing & Prototyping
Manufacturing Diamond Under Very High Pressure

A process for manufacturing bulk diamond has been made practical by the invention of the High Pressure and Temperature Apparatus capable of applying the combination of very high temperature and high pressure needed to melt carbon in a sufficiently large volume. The rate of growth achievable in this...

Briefs: Physical Sciences

In a proposed direct methanol fuel-cell electric-power-generating system, the fuel-cells would consume neat methanol, in contradistinction to the dilute aqueous methanol solutions consumed...

Articles: Imaging

Robots are used in a wide variety of industries for a broad range of applications, from automotive, foundry, and general industry to material handling, packaging, and palletizing. With...

Application Briefs: Imaging
Star-P interactive parallel computing platform
Interactive Supercomputing (ISC)
Waltham, MA
781-419-5050
www.interactivesupercomputing.com

NASA’s Optical...

Articles: Photonics/Optics

Like most mature industries, the automotive industry is highly competitive. Customers demand quality, security, and economy. Competition requires increasingly fast times to market for...

Briefs: Software
Pattern Matcher for Trees Constructed From Lists

A software library has been developed that takes a highlevel description of a pattern to be satisfied and applies it to a target. If the two match, it returns success; otherwise, it indicates a failure. The target is semantically a tree that is constructed from elements of terminal and...

Briefs: Information Technology
Single-Point Access to Data Distributed on Many Processors

A description of the functions and data structures is defined that would be necessary to implement the Chapel concept of distributions, domains, allocation, access, and interfaces to the compiler for transformations from Chapel source to their run-time implementation for these concepts....

Application Briefs: Photonics/Optics

The James Webb Space Telescope (JWST) is scheduled for launch in 2013 and aims to unravel the history of earlier galaxies, linking the Big Bang to the Milky Way Galaxy....

Briefs: Materials

The term "HYCARB" denotes a hybrid composite of polyimide matrices reinforced with carbon and boron fibers. HYCARB and an improved process for fabricating dry HYCARB tapes have been...

Briefs: Manufacturing & Prototyping

Self-advancing tool bits that are hybrids of drills and stepped taps make it possible to form threaded holes wider than about 1/2 in. (about 13 mm) without applying any more axial force than is necessary for...

Articles: Electronics & Computers

By now, most test engineers have recognized that both HALT (Highly Accelerated Life Testing) and HASS (Highly Accelerated Stress Screening) are the fastest and most effective...

Briefs: Manufacturing & Prototyping
Manufacturing Large Membrane Mirrors at Low Cost

Relatively inexpensive processes have been developed for manufacturing lightweight, wide-aperture mirrors that consist mainly of reflectively coated, edge-supported polyimide membranes. The polyimide and other materials in these mirrors can withstand the environment of outer space, and the mirrors...

Articles: Photonics/Optics

Optical scanners, or servo-controlled, limited-rotation motors with laser-beam steering mirrors, were first introduced 40 years ago by General Scanning. Since then, they have...

Briefs: Information Technology
Representation-Independent Iteration of Sparse Data Arrays

An approach is defined that describes a method of iterating over massively large arrays containing sparse data using an approach that is implementation independent of how the contents of the sparse arrays are laid out in memory. What is unique and important here is the decoupling of the...

Briefs: Semiconductors & ICs

A research and development effort now underway is directed toward satisfying requirements for a new type of relatively inexpensive, lightweight, microwave antenna array and associated...

Briefs: Photonics/Optics

Lion Precision and Professional Instruments, St. Paul, Minnesota

High-performance materials such as ceramics, optics, and alloy steels are manufactured using abrasive...

Articles: Electronics & Computers

Throughout 2006, we’ve been celebrating the 30th anniversary of NASA Tech Briefs with special feature articles highlighting the past 30 years of a different technology category each month. This month, we...

Briefs: Manufacturing & Prototyping
Automated Low-Gravitation Facility Would Make Optical Fibers

A report describes a proposed automated facility that would be operated in outer space to produce high-quality optical fibers from fluoride-based glasses, free of light-scattering crystallites that form during production in normal Earth gravitation. Before launch, glass preforms would...

Briefs: Mechanical & Fluid Systems

Atomic Energy of Canada, Ltd., a subcontractor of Societatea Nationala Nucleoelectrica S.A. (SNN) of Romania, contracted Badger Meter to model, test, and produce a set of precision...

Briefs: Physical Sciences

Viscosity is a measure of the resistance of a liquid to flow, and is an important measurement requirement in industrial process control and OEM applications. Viscosity describes the...