August 2009

NASA's High-End Computing System Upgraded For Climate Simulation

Climate scientists need more powerful computers to process the sophisticated computer models used in climate forecasts. Such an expanded capability is now being developed at NASA’s Goddard Space Flight Center.

News : Green Design & Manufacturing
Using Algae to Safeguard Water Supplies

Oak Ridge National Laboratory researchers have refined a method for detecting contaminants in municipal water supplies. Their work shows that the technology, which uses algae, has broader applications than expected.

Products : Energy
Large Area OLED Device

Novaled (Dresden, Germany) developed a 15 x 15 cm white OLED with a thickness of less than 2 mm. The Novaled OLED stack allows for a natural and warm white light, performing with a high color rendering index (CRI) of 90 - which looks similar to sunlight or what is delivered by incandescent bulbs.

News : Green Design & Manufacturing
NIST Gets the Dirt on Soil

NIST has issued three new certified reference materials for soil. Intended for use as controls in testing laboratories, the new Standard Reference Materials (SRMs) will aid in determining soil quality, detecting soil contamination, and monitoring cleanup efforts from accidental spills or atmospheric deposition.

News : Energy
Class AAA Solar Simulators

Oriel Sol3A™ solar simulators from Newport Corporation (Irvine, CA) are available in sizes from 2 x 2, 4 x 4, 6 x 6, and 8 x 8 inches, making them ideal for the test and measurement of solar cells.

News : Energy
Paintable Solar Cells

Using nanoparticle “inks” developed at University of Texas at Austin, solar cells could be printed more cheaply - with a roll-to-roll printing process on a plastic substrate or stainless steel. The prospect of painting the inks onto a rooftop or building is not far-fetched.

News : Government
DOE Invests in Improving SSL

Today, DOE Secretary Steven Chu announced the investment of up to $6.4 million (including $4.6 million from the American Recovery and Reinvestment Act) for advancing research and development of next generation high-efficiency lighting.

Products : Transportation
Fuel Cell/Battery-Powered UAV Takes Flight

EnergyOr Technologies Inc., of Montreal, Canada, has designed, constructed, and tested an Unmanned Aerial Vehicle (UAV) platform to demonstrate its fuel cell hybrid technology. EnergyOr's system will achieve 8 hours flight endurance in the near future.

News : Energy
Breakthrough, Ultrathin LEDs

A new LED display process developed by an international team of researchers offers properties like see-through construction and mechanical flexibility - which would be impossible to achieve with existing technologies.

News : Green Design & Manufacturing
Scrubbing Out Sulfur

Pacific Northwest National Laboratory researchers have developed a reusable organic liquid that can pull harmful gases like carbon dioxide or sulfur dioxide out of industrial emissions from power plants. Power plants could capture double the amount of harmful gases in a way that uses no water, less energy, and saves...

News : Green Design & Manufacturing
Doubling Butanol Production

An Ohio State University team led by Shang-Tian Yang, professor of Chemical and Biomolecular Engineering, has found a way to double the production of the biofuel butanol - which might someday replace gasoline in automobiles.

Millipore Designs Solutions for Customers

Perhaps best known as a pioneer of membrane-based separation technologies, Millipore (Billerica, MA) is a multinational life science corporation with 5,900 employees worldwide and annual sales of $1.53 billion.

News : Energy
Cooling Challenge Yields A Better AC Unit

Coolerado Corp. of Denver, CO is the first winner of the UC Davis “Western Cooling Challenge.” Recent federal tests showed that their five-ton commercial rooftop unit should be able to air-condition a typical big-box store with less than half the energy needed by conventional cooling units.

Thin-Film Plate Polarizers: A New Polarization Option

While there are many types of polarizers and polarizing beamsplitters available today, none of them solves every problem. This podcast with Dr. Turan Erdogan, Chief Technology Officer of Semrock, discusses the company's thin-film plate polarizers as a new option.

Warming Ocean Triggers Release of Greenhouse Gas

Scientists at the National Oceanography Centre, Southampton, UK, have found that the warming of an Arctic current over the last 30 years has triggered the release of methane - a potent greenhouse gas - from methane hydrate stored in the sediment beneath the seabed.

News : Energy
Energy-Efficient Sewage Plants

High-rate digestion with microfiltration is state-of-the-art in large sewage plants. It effectively removes accumulated sludge, and produces biogas to generate energy. A Fraunhofer Institute study reveals that even smaller plants can benefit from this process.

News : Energy
Absolute Positioning Sensor for Solar Tracking

The T7 absolute inclinometer from US Digital (Vancouver, WA) utilizes a solid-state sensor to give high-accuracy tilt readings over a 360 degree range, and is ideal for concentrated solar power (CSP) and concentrated photovoltaic (CPV) industries.

News : Energy
Using Plastics to Make Solar Cells More Cost-Effective

Scientists are striving to develop organic solar cells that can be produced as easily and inexpensively as thin films. A major obstacle is coaxing these carbon-based materials to reliably form the proper structure at the nanoscale. The goal is to develop cells made from low-cost plastics...

News : Energy
Researchers Striving to Cut Waste When Slicing Silicon

A filigree wire is standardly used to slice silicon blocks (ingots) into paper-thin wafers for solar cells. This wire can cut through the ingot at a speed of up to 60 km/h. Several hundred kilometers long, the wire is arranged in such a way that the ingot is sliced into hundreds of wafers...

News : Energy
Process Cleans Wastewater, Generates Electricity, Desalinates Seawater

A team of researchers from the U.S. and China modified a microbial fuel cell - a device that uses naturally occurring bacteria to convert wastewater into clean water producing electricity - so it could desalinate salty water. The new process cleans wastewater, generates...

News : Green Design & Manufacturing
Nanocrystals Could Aid in Solid-State Lighting and CO2 Storage

Scientists at Berkeley Lab have created non-toxic magnesium oxide nanocrystals whose size can be adjusted within just a few nanometers. The nanocrystals glow blue when exposed to ultraviolet light, and could be a bright candidate for lighting that consumes less energy and has a...

News : Energy
Emitters Provide Flexibility

Philips Lumileds (San Jose, CA) expanded its LUXEON® Rebel family of LEDs with nine new emitters designed for illumination solutions such as recessed lighting, street lamps, and retrofit bulbs. The new LEDs meet ENERGY STAR® requirements.

News : Energy
Ethanol Funding Opportunity

DOE announced the availability of up to $5.5 million from the American Recovery and Reinvestment Act to increase the use of higher ethanol blends up to E85 (85% ethanol/15% gasoline) by expanding refueling infrastructure.

News : Green Design & Manufacturing
Working Toward Better CO2 Capture

Separating carbon dioxide from its polluting source - such as the flue gas from a coal-fired power plant - may soon become cleaner and more efficient thanks to a screening method developed by a Lawrence Livermore National Laboratory researcher.

News : Lighting
LED Driver Increases Component Longevity

Supertex, Inc. (Sunnyvale, CA) introduces a buck-mode LED driver IC with hysteretic current control and high-side current sensing. The HV9918 is ideal for a variety of solid-state lighting applications, such as low-voltage industrial and architectural LED lighting.

Allen Parker, Systems Engineer, Advanced Structures and Measurement Group, Dryden Flight Research Center

Allen Parker is a systems engineer with expertise in the areas of fiber optics and data acquisition. He is currently part of the team that is developing and flight testing an innovative new fiber optic wing shape sensor system installed...

Articles : RF & Microwave Electronics
Beyond the Box: A Software-Defined Approach to RF Testing

The traditional engineering response to testing a new wireless standard often involves selecting a box instrument with the closest specifications. For automated test systems with multiple test requirements, this approach usually results in a different box for each measurement requirement...

Briefs : Mechanical & Fluid Systems
Collecting Ground Samples for Balloon-Borne Instruments

A proposed system in a gondola containing scientific instruments suspended by a balloon over the surface of the Saturn moon Titan would quickly acquire samples of rock or ice from the ground below. Prototypes of a sample-collecting device that would be a major part of the system have been...

Briefs : Mechanical & Fluid Systems
Tethered Pyrotechnic Apparatus for Acquiring a Ground Sample

A proposed alternative design for the balloon- borne ground-sampling system described in the immediately preceding article would not rely on free fall to drive a harpoonlike sample-collecting device into the ground. Instead, the harpoon-like sample-collecting device would be a...

Briefs : Information Technology
Aligning a Receiving Antenna Array To Reduce Interference

A digital signal-processing algorithm has been devised as a means of aligning (as defined below) the outputs of multiple receiving radio antennas in a large array for the purpose of receiving a desired weak signal transmitted by a single distant source in the presence of an interfering...

Briefs : Electronics & Computers
Enhanced Video-Oculography System

A previously developed video-oculography system has been enhanced for use in measuring vestibulo-ocular reflexes of a human subject in a centrifuge, motor vehicle, or other setting. The system as previously developed included a lightweight digital video camera mounted on goggles. The left eye was illuminated by...

Briefs : Electronics & Computers
Joint Carrier-Phase Synchronization and LDPC Decoding

A method has been proposed to increase the degree of synchronization of a radio receiver with the phase of a suppressed carrier signal modulated with a binary-phase-shift-keying (BPSK) or quaternary-phase-shift-keying (QPSK) signal representing a low- density parity-check (LDPC) code. This...

Ultra-Portable Data Acquisition System

Dewetron USA, Wakefield, RI, has introduced the DEWE-43-V, an ultra-portable data acquisition system that includes eight 24-bit dynamic analog input channels with >100 dB dynamic range; eight synchronous counters for recording speed, counts, RPM, and duty cycle from tachometer and pulse train sources; 24...

Briefs : Electronics & Computers
Dual-Polarization, Sideband-Separating, Balanced Receiver for 1.5 THz

A proposed heterodyne receiver would be capable of detecting electromagnetic radiation in both of two orthogonal linear polarizations, separating sidebands, and providing balanced outputs in a frequency band centered at 1.5 THz with a fractional bandwidth >40 percent....

Briefs : Electronics & Computers
Modular Battery Charge Controller

A new approach to masterless, distributed, digital-charge control for batteries requiring charge control has been developed and implemented. This approach is required in battery chemistries that need cell-level charge control for safety and is characterized by the use of one controller per cell, resulting in...

Briefs : Semiconductors & ICs
Efficient Multiplexer FPGA Block Structures Based on G⁴FETs

Generic structures have been conceived for multiplexer blocks to be implemented in field-programmable gate arrays (FPGAs) based on four-gate field-effect transistors (G4FETs). This concept is a contribution to the continuing development of digital logic circuits based on...

Briefs : Semiconductors & ICs
VLSI Microsystem for Rapid Bioinformatic Pattern Recognition

A system comprising very-large-scale integrated (VLSI) circuits is being developed as a means of bioinformatics-oriented analysis and recognition of patterns of fluorescence generated in a microarray in an advanced, highly miniaturized, portable genetic-expression- assay instrument....

Briefs : Semiconductors & ICs
Low-Noise Amplifier for 100 to 180 GHz

A three-stage monolithic millimeter-wave integrated-circuit (MMIC) amplifier designed to exhibit low noise in operation at frequencies from about 100 to somewhat above 180 GHz has been built and tested. This is a prototype of broadband amplifiers that have potential utility in diverse applications,...

Briefs : Manufacturing & Prototyping
Inert Welding/Brazing Gas Filters and Dryers

A system has been designed to reduce the hydrogen molecule content in inert gases that are used for shielding the welding arc and molten weld area during the manual fusion, automated welding, and induction brazing process. Two desiccant pipeline dryer cartridges are connected together using either...

Briefs : Manufacturing & Prototyping
Fabricating Copper Nanotubes by Electrodeposition

Copper tubes having diameters between about 100 and about 200 nm have been fabricated by electrodeposition of copper into the pores of alumina nanopore membranes. Copper nanotubes are under consideration as alternatives to copper nanorods and nanowires for applications involving thermal and/or...

Briefs : Manufacturing & Prototyping
Improved Fabrication of Ceramic Matrix Composite/Foam Core Integrated Structures

The use of hybridized carbon/silicon carbide (C/SiC) fabric to reinforce ceramic matrix composite face sheets and the integration of such face sheets with a foam core creates a sandwich structure capable of withstanding high-heat-flux environments (150...

Briefs : Mechanical & Fluid Systems
Reducing Aerodynamic Drag on Empty Open Cargo Vehicles

Some simple structural modifications have been demonstrated to be effective in reducing aerodynamic drag on vehicles that have empty open cargo bays. The modifications were originally intended to be made in railroad coal cars because the amounts of coal and the distances over which they are...

Briefs : Mechanical & Fluid Systems
Rotary Percussive Auto-Gopher for Deep Drilling and Sampling

The term “rotary percussive autogopher” denotes a proposed addition to a family of apparatuses, based on ultrasonic/sonic drill corers (USDCs), that have been described in numerous previous NASA Tech Briefs articles. These apparatuses have been designed, variously, for boring into,...

Briefs : Mechanical & Fluid Systems
Thermostatic Valves Containing Silicone-Oil Actuators

Flow-splitting and flow-mixing thermally actuated spool valves have been developed for controlling flows of a heat-transfer fluid in a temperature-regulation system aboard the Mars Science Laboratory (MSL) rover. Valves like these could also be useful in terrestrial temperature-regulation...

Application Briefs : Robotics, Automation & Control
Assembly Machines Produce Optics for NASA’s NuSTAR Telescope
Cylindrical optics module assembly machines
Swanzey, NH

ABTech has completed the first of two cylindrical optics module assembly machines for Columbia University’s Nevis Astrophysics Laboratory. The multi-axis...

Application Briefs : Imaging
CCD Imaging Sensors Aid Hubble in Exploring the Universe
Charge coupled device (CCD) imaging sensors
Chelmsford, UK
44 (0)1245 493493

e2v CCD imaging sensors were launched recently on the Space Shuttle Atlantis as part of a mission to upgrade and repair the Hubble Space Telescope. The imaging...

NASA Tech Needs
Rocket Engine Altitude Simulation Technologies

John C. Stennis Space Center is embarking on a very ambitious era in its rocket engine propulsion test history. The first new large rocket engine test stand to be built at Stennis Space Center in over 40 years is under construction. The new A3 Test Stand is designed to test very large (294,000 lbf...

Techs for License
Fluorinated ZDDP Improves Mileage and Reduces Engine Wear

This technology takes ZDDP — Zinc Dialkyl Dithiophos - phate, an anti-wear oil additive — and enhances it by adding fluorine to the chemical backbone. The resulting new molecule improves engine fuel economy by 3%, reduces engine wear from that available with conventional ZDDP, and...

Techs for License
Real-Time Dogfight Guiding System

Successful performance of BFM (Basic Flight Maneuvers) presents the greatest challenge facing combat pilots. Acquiring and maintaining the required skills for dogfights is a long, complicated and costly process. The solution is a system that provides automatic assessment of a situation and automatic...

Briefs : Mechanical & Fluid Systems
More About Reconfigurable Exploratory Robotic Vehicles

Modular exploratory robotic vehicles that will be able to reconfigure themselves in the field are undergoing development. These vehicles at the initial concept stage were described in “Reconfigurable Exploratory Robotic Vehicles” (NPO-20944), NASA Tech Briefs, Vol. 25, No. 7 (July 2001),...

NASA Tech Needs
Anchoring Technology to Hold an Active Ingredient Within a Targeted Depth of Soil

A company seeks technologies that enhance the duration that herbicides, insecticides, fungicides, and similar products are held at a targeted depth within the top layers of soil. Duration should be between 30 and 60 days. The targeted depth varies with the crop...

Briefs : Materials
Cyclic Oxidation Behavior of CuCrAl Cold-Sprayed Coatings for Reusable Launch Vehicles

The next generation of reusable launch vehicles is likely to use GRCop-84 [Cu-8(at.%)Cr-4%Nb] copper alloy combustion liners. The application of protective coatings on GRCop-84 liners can minimize or eliminate many of the environmental problems experienced by...

Briefs : Materials
Ceramic Fiber Structures for Cryogenic Load-Bearing Applications

This invention is intended for use as a load-bearing device under cryogenic temperatures and/or abrasive conditions (i.e., during missions to the Moon). The innovation consists of small-diameter, ceramic fibers that are woven or braided into devices like ropes, belts, tracks, or...

Briefs : Materials
Elastomer Reinforced With Carbon Nanotubes

Elastomers are reinforced with functionalized, single-walled carbon nanotubes (SWNTs) giving them high- breaking strain levels and low densities. Cross-linked elastomers are prepared using amine-terminated, poly(dimethylsiloxane) (PDMS), with an average molecular weight of 5,000 daltons, and a...

NASA Tech Needs
Dissolvable Paper/Packaging Material

A company is searching for a disruptive technology relating to dispersible packaging materials. The material should easily dissolve in cold water and be 100% biodegradable in a short space of time, without compromising the strength and performance of the material for its given application. While paper-based...

Briefs : Materials
Improving Heat Flux Performance of Flat Surface in Spray-Cooling Systems

A method has been developed for improving heat flux performance relative to flat surfaces in spray-cooling systems. Similar enhancement techniques have been used for convective heat transfer, but, to the best knowledge at the time of this reporting, never spray cooling of...

Briefs : Materials
Treating Fibrous Insulation To Reduce Thermal Conductivity

A chemical treatment reduces the convective and radiative contributions to the effective thermal conductivity of porous fibrous thermal-insulation tile. The net effect of the treatment is to coat the surfaces of fibers with a mixture of transition-metal oxides (TMOs) without filling the...

Briefs : Materials
Silica-Aerogel Composites Opacified With La0.7Sr0.3MnO3

As part of an effort to develop improved lightweight thermal-insulation tiles to withstand temperatures up to 1,000 °C, silica aerogel/fused-quartz- fiber composite materials containing La0.7Sr0.3MnO3 particles as opacifiers have been investigated as...

Briefs : Materials
Biologically Inspired Purification and Dispersion of SWCNTs

A biologically inspired method has been developed for (1) separating single-wall carbon nanotubes (SWCNTs) from other materials (principally, amorphous carbon and metal catalysts) in raw production batches and (2) dispersing the SWCNTs as individual particles (in contradistinction to...

Who's Who
Allen Parker, Systems Engineer, Advanced Structures and Measurement Group, Dryden Flight Research Center

Allen Parker is a systems engineer with expertise in the areas of fiber optics and data acquisition. He is currently part of the team that is developing and flight testing an innovative new fiber optic wing shape sensor system installed on...

Briefs : Materials
Quantifying Airborne Hydrogen in Nearly Real Time

An indirect method of measuring small concentrations of hydrogen gas in air in nearly real time has been devised to circumvent the difficulty of performing such measurements directly. In this method, a sample of air suspected of containing hydrogen is first enclosed in a suitable container, and...

Briefs : Physical Sciences
A Technique for Adjusting Eigenfrequencies of WGM Resonators

A simple technique has been devised for making small, permanent changes in the eigenfrequencies (resonance frequencies) of whispering-gallery-mode (WGM) dielectric optical resonators that have high values of the resonance quality factor (Q). The essence of the technique is to coat the...

Briefs : Physical Sciences
Low-Pressure, Field-Ionizing Mass Spectrometer

A small mass spectrometer utilizing a miniature field ionization source is now undergoing development. It is designed for use in a variety of applications in which there are requirements for a lightweight, low-power-consumption instrument that can analyze the masses of a wide variety of molecules...

Briefs : Physical Sciences
Modifying Operating Cycles To Increase Stability in a LITS

The short-term instability in the frequency of a linear-ion-trap frequency standard (LITS) can be reduced by modifying two cycles involved in its operation: (1) the bimodal (bright/dim) cycle of a plasma discharge lamp used for state preparation and detection and (2) a...

Briefs : Physical Sciences
Chamber for Simulating Martian and Terrestrial Environments

An apparatus for simulating the environment at the surface of Mars has been developed. Within the apparatus, the pressure, gas composition, and temperature of the atmosphere; the incident solar visible and ultraviolet (UV) light; and the attenuation of the light by dust in the...

Briefs : Information Technology
Algorithm for Detecting a Bright Spot in an Image

An algorithm processes the pixel intensities of a digitized image to detect and locate a circular bright spot, the approximate size of which is known in advance. The algorithm is used to find images of the Sun in cameras aboard the Mars Exploration Rovers. (The images are used in estimating...

Briefs : Information Technology
Extreme Programming: Maestro Style

“Extreme Programming: Maestro Style” is the name of a computer-programming methodology that has evolved as a custom version of a methodology, called “extreme programming” that has been practiced in the software industry since the late 1990s. The name of this version reflects its origin in the work of...

Briefs : Information Technology
Adaptive Behavior for Mobile Robots

The term “System for Mobility and Access to Rough Terrain” (SMART) denotes a theoretical framework, a control architecture, and an algorithm that implements the framework and architecture, for enabling a land-mobile robot to adapt to changing conditions. SMART is intended to enable the robot to recognize...

Briefs : Information Technology
Protocol for Communication Networking for Formation Flying

An application-layer protocol and a network architecture have been proposed for data communications among multiple autonomous spacecraft that are required to fly in a precise formation in order to perform scientific observations. The protocol could also be applied to other autonomous...

Briefs : Information Technology
Planning Complex Sequences Using Compressed Representations

A method that notably includes the use of compressed representations interleaved with non-compressed (time-line) representations of a general scheduling problem has been conceived as a means of increasing, by orders of magnitude, the speeds of computations needed for scheduling complex...

Briefs : Information Technology
Self-Supervised Learning of Terrain Traversability From Proprioceptive Sensors

Robust and reliable autonomous navigation in unstructured, off-road terrain is a critical element in making unmanned ground vehicles a reality. Existing approaches tend to rely on evaluating the traversability of terrain based on fixed parameters obtained via testing...

The Opportunity of Economic Uncertainty

There’s no question that the economic slowdown has taken an enormous toll on the industrial and manufacturing sectors. But despite the downturn, the glass, in my view, remains half full for industrial businesses, including the many firms that we talk with every day. Companies are telling us they’ve...

Articles : Motion Control
Introduction to Linear Actuators

Students trained in classic mechanical engineering are taught to construct a system using conventional mechanical components to convert rotary into linear motion. Converting rotary to linear motion can be accomplished by several mechanical means using a rotary motor, rack and pinion, belt and pulley, and other...

Application Briefs : Robotics, Automation & Control
HAWE Hydraulic Valves Improve Maintenance for Conveyor Application Systems

HAWE Hydraulics, Charlotte, NC, offers proportional valves and controls typically used by companies manufacturing machine tools, lifting platforms, mobile cranes, construction machinery, forestry, material handling, shipbuilding, wind and solar power, offshore technology,...

Application Briefs : Medical
Spiralock Fasteners Safeguard Reliability for Medical Lasers and Implants

Failure is not an option when it comes to medical equipment. From critical or sensitive devices like lasers, MRI scanners, knee joints, and implantable pacemakers to instruments as straightforward as stethoscopes, when life is at stake, medical equipment must be...

Piston Pump

Parker Hannifin, Marysville, OH, has added a 45cc model to its P1/PD line of piston pumps. The variable displacement, axial piston pump is optimized for medium pressure, open-circuit mobile and industrial applications.

Heavy-Duty Slide

The Heavy-Duty Slide 2 from Techno, Inc., New Hyde Park, NY, is constructed of single rigid aluminum extrusion and able to handle heavy cantilevered loads. It measures 225mm wide and is available in travels from 122 to 2,722mm (4.8 to 107.2in.), with a wraparound motor mounting kit that allows for longer travel with shorter...

Servo Coupling

The EKC Series servo coupling from GAM, Mount Prospect, IL, combines high precision and custom configurability with a low price. It is engineered to minimize space requirements as well as design and installation time. Key features include a single bolt radial clamping hub, star-shaped elastomeric element with an involute tooth...

Pressure Control Valve

HAWE Hydraulics, Charlotte, NC, has introduced the type CLK, a pressure control valve with an additional safety function to provide operational ease within hydraulic systems where temperature increases and/or external load peaks can lead to problems.

Two-Way Valves

The Mini-Mizer two- and three-way valves from Humphrey Products Company, Kalamazoo, MI, operate over a -40 deg F/C to +150 deg F (+66 deg C) range. They are available in a wide range of coil voltages, with power consumption as low as 0.5 watts. The valves’ captured sealed construction allows for easy design of custom manifolds,...

Fluid Sensor

Optek Technology, Carrollton, TX, has expanded its family of fluid sensors to include automatic calibration and a preset trip level feature. Designated the OCB350 Series, the fluid sensor requires only an optical device and power supply for operation. It uses an LED/phototransistor to sense the change in refractive properties...

Intelligent Actuator

Tolomatic, Hamel, MN, has introduced the ICR Basic rodstyle actuator, an all-in-one linear actuator integrating servomotor, drive, controller, and actuator. Requiring only a DC power source and motion inputs from the host PLC, the actuator can directly replace pneumatic and hydraulic cylinders in packaging, material...

Linear Motor Stage

The NanoTranslation ANT95-L linear motor stage from Aerotech, Pittsburgh, PA, provides 5G acceleration, 500mm/s velocity, 5nm resolution, and an accuracy of 250nm. The stage uses non-cogging, noncontact, direct-drive technology. The stage is available in x, xy, xyz, and other combinations.

Linear Stage

The PMT320 precision linear stage from Steinmeyer Inc., Burlington, MA, provides a repeatability of +/1 micron and travel distances of 600 to 1,500nm. It has a 320mm wide die-cast base profile, a 1,000mm stroke, and weighs 70kg.

Inductive Encoder

The MILE inductive encoder from Maxon Motor USA Inc., Fall River, MA, delivers up to 64 pulses at up to 120,000 rpm. Measuring 6mm in diameter, it is said to be the smallest inductive encoder available.

Articles : Motion Control
Fluid Handling Products Gain in Performance, Efficiency

Today’s pumps, valves, and flow meters are being designed with greater accuracy and flexibility to handle a wide range of fluids, chemicals, and other materials. Demands for more reliable operation and lower energy usage dictate these parts be made of materials lighter than previously...

Technology Leaders