Stories
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Briefs: Robotics, Automation & Control
When developing the steering component of the Catrike Speed recumbent tricycle, the manufacturer switched from metal bearings to igubal® plastic rod ends for lighter weight (80% less) and...
Briefs: Motion Control
A multitude of tests are necessary during the manufacture of sophisticated tables used to position patients in nuclear-medicine-based medical imaging machines. Some of the tests,...
Briefs: Physical Sciences
Organic light-emitting diode (OLED) technology comprises organic thin films that, when placed between two conductors, can serve as a display. This technology requires very little...
Briefs: Physical Sciences
Using Laser-Induced Incandescence To Measure Soot in Exhaust
An instrumentation system exploits laser-induced incandescence (LII) to measure the concentration of soot particles in an exhaust stream from an engine, furnace, or industrial process that burns hydrocarbon fuel. In comparison with LII soot-concentration-measuring systems that have been...
Briefs: Physical Sciences
This enhanced illumination design and analysis program, called LightTools® 5.1, enables easy and accurate modeling of sophisticated backlights for flat panel displays. It...
Briefs: Electronics & Computers
Sensors for Pointing Moving Instruments Toward Each Other
Optoelectronic sensor systems are being developed for use in maintaining fixed relative orientations of two scientific- instrument platforms that are in relative motion. In the original intended application, the platforms would be two spacecraft flying in formation and separated by a long...
Briefs: Electronics & Computers
An improved cathode structure on a membrane/electrode assembly has been developed for a direct methanol fuel cell, in a continuing effort to realize practical power systems containing...
Briefs: Electronics & Computers
A modified chemical composition has been devised to improve the performance of the anode of a direct methanol fuel cell. The main feature of the modified composition is the incorporation of hydrous...
Briefs: Electronics & Computers
An advanced solid-state power amplifier that can generate an output power of as much as 17 W at a design operating frequency of 8.4 GHz has been designed and constructed as a smaller, lighter, less...
Briefs: Electronics & Computers
Upgrading the Space Shuttle Caution and Warning System
A report describes the history and the continuing evolution of an avionic system aboard the space shuttle, denoted the caution and warning system, that generates visual and auditory displays to alert astronauts to malfunctions. The report focuses mainly on planned human-factors-oriented...
Briefs: Electronics & Computers
Fractal Reference Signals in Pulse-Width Modulation
A report proposes the use of waveforms having fractal shapes reminiscent of sawteeth (in contradistinction to conventional regular sawtooth waveforms) as reference signals for pulse-width modulation in control systems for thrusters of spacecraft flying in formation.
Briefs: Mechanical & Fluid Systems
A system for collecting samples of powdered rock has been devised for use in conjunction with an ultrasonic/sonic drill/corer (USDC) — a lightweight, low-power apparatus designed to...
Briefs: Mechanical & Fluid Systems
A computer-controlled apparatus processes batches of soybeans into one or more of a variety of food products, under conditions that can be chosen by the user and reproduced from batch to...
Briefs: Photonics/Optics
An advanced computer code is undergoing development for numerically simulating laser cooling and trapping of large numbers of atoms. The code is expected to be useful in...
Briefs: Information Technology
A recently conceived approach to automated real-time control of the actions of a robotic system enables an embedded real-time planning algorithm to develop plans that are more robust than they...
Briefs: Information Technology
Dominant element-based gradient descent and dynamic initial learning rate (DOGEDYN) is a method of sequential principal component analysis (PCA) that is well suited for such applications as data...
Briefs: Photonics/Optics
Flight-control and navigation systems inspired by the structure and function of the visual system and brain of insects have been proposed for a class of developmental miniature robotic...
Briefs: Information Technology
Semantic Metrics for Analysis of Software
A recently conceived suite of object-oriented software metrics focus is on semantic aspects of software, in contradistinction to traditional software metrics, which focus on syntactic aspects of software. Semantic metrics represent a more human-oriented view of software than do syntactic metrics. The...
Briefs: Information Technology
Development of Software for a Lidar-Altimeter Processor
A report describes the development of software for a digital processor that operates in conjunction with a finite-impulse-response (FIR) chip in a spaceborne lidar altimeter.Processing is started by a laserfire interrupt signal that is repeated at intervals of 25 ms. For the purpose of...
Briefs: Materials
These coatings show promise, but further development is needed. Conversion coatings that comprise mixtures of molybdates and several additives have been subjected to a variety of...
Briefs: Materials
A relatively economical method of chemical vapor deposition (CVD) has been developed for synthesizing diamond crystals and films. Unlike prior CVD methods for synthesizing diamond, this method does not...
Briefs: Materials
Modifying Silicates for Better Dispersion in Nanocomposites
An improved chemical modification has been developed to enhance the dispersion of layered silicate particles in the formulation of a polymer/silicate nanocomposite material. The modification involves, among other things, the co-exchange of an alkyl ammonium ion and a monoprotonated diamine...
Briefs: Physical Sciences
A proposed optoelectronic sensor system would measure the increase in thickness of a film of parylene (a thermoplastic polymer made from para-xylene) during growth of the film in a vapor...
Briefs: Physical Sciences
Pd/CeO2/SiC Chemical Sensors
The incorporation of nanostructured interfacial layers of CeO2 has been proposed to enhance the performances of Pd/SiC Schottky diodes used to sense hydrogen and hydrocarbons at high temperatures. If successful, this development could prove beneficial in numerous applications in which there are requirements to sense...
Briefs: Physical Sciences
The microparticle flow sensor (MFS) is a system for identifying and counting microscopic particles entrained in a flowing liquid. The MFS includes a transparent, optoelectronically instrumented laminar-flow chamber...
Briefs: Physical Sciences
Biosensors of a proposed type would exploit scattering of light by surface plasmon resonance (SPR). Related prior biosensors exploit absorption of light by SPR. Relative to the prior SPR...
Briefs: Physical Sciences
Diode-Laser-Based Spectrometer for Sensing Gases
A diode-laser-based spectrometer has been developed for measuring concentrations of gases and is intended particularly for use in analyzing and monitoring combustion processes under microgravitational conditions in a drop tower or a spacecraft.
Briefs: Physical Sciences
Pilot scale experiments have demonstrated a method of reducing the amounts of oxides of nitrogen (NOx) emitted by industrial boilers and powerplant combustors that involves (1)...
Briefs: Physical Sciences
A capability for real-time computational simulation of aeroheating has been developed in support of the Hyper-X program, which is directed toward demonstrating the feasibility of...
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Ask the Expert
Dan Sanchez on How to Improve Extruded Components
Improving extruded components requires careful attention to a number of factors, including dimensional tolerance, material selection, and processing. Trelleborg’s Dan Sanchez provides detailed insights into each of these considerations to help you advance your device innovations while reducing costs and speeding time to market.
Webcasts
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How Wearables Are Enhancing Smart Drug Delivery
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Developing Sustainable Drug-Delivery Devices
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Smarter Pathways for Precision Drug Delivery in Cancer Care
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Inside Story
Inside Story: Trends in Packaging and Sterilization
Eurofins Medical Device Testing (MDT) provides a full scope of testing services. In this interview, Eurofins’ experts, Sunny Modi, PhD, Director of Package Testing; and Elizabeth Sydnor, Director of Microbiology; answer common questions on medical device packaging and sterilization.