Briefs: Materials
Composite Laminate With Coefficient of Thermal Expansion Matching D263 Glass

The International X-ray Observatory project seeks to make an X-ray telescope assembly with 14,000 flexible glass segments. The glass used is commercially available SCHOTT D263 glass. Thermal expansion causes the mirror to distort out of alignment. A housing material is...

Briefs: Mechanical & Fluid Systems
Robust Tensioned Kevlar Suspension Design

One common but challenging problem in cryogenic engineering is to produce a mount that has excellent thermal isolation but is also rigid. Such mounts can be achieved by suspending the load from a network of fibers or strings held in tension. Kevlar fibers are often used for this purpose owing to their...

Briefs: Mechanical & Fluid Systems

In many applications, an optical detector has to be located relative to mechanical reference points. One solution is to specify stringent requirements on (1) mounting the optical detector relative...

Briefs: Medical
Purifying, Separating, and Concentrating Cells From a Sample Low in Biomass

Frequently there is an inability to process and analyze samples of low biomass due to limiting amounts of relevant biomaterial in the sample. Furthermore, molecular biological protocols geared towards increasing the density of recovered cells and biomolecules of...

Briefs: Medical
Virtual Ultrasound Guidance for Inexperienced Operators

Medical ultrasound or echocardiographic studies are highly operatordependent and generally require lengthy training and internship to perfect. To obtain quality echocardiographic images in remote environments, such as on-orbit, remote guidance of studies has been employed. This technique...

Briefs: Physical Sciences
Method to Remove Particulate Matter From Dusty Gases at Low Pressures

Future human exploration of Mars will rely on local Martian resources to reduce the mass, cost, and risk of space exploration launched from Earth. NASA’s In Situ Resource Utilization (ISRU) Project seeks to produce mission consumables from local Martian resources, such as...

Briefs: Physical Sciences

A new method has been developed for monitoring and control of automated sample processing and preparation especially focusing on desalting of samples before...

Briefs: Physical Sciences
An MSK Radar Waveform

The minimum-shift-keying (MSK) radar waveform is formed by periodically extending a waveform that separately modulates the in-phase and quadraturephase components of the carrier with offset pulse-shaped pseudo noise (PN) sequences. To generate this waveform, a pair of periodic PN sequences is each passed through a...

Briefs: Physical Sciences
Telescope Alignment From Sparsely Sampled Wavefront Measurements Over Pupil Subapertures

Alignment of two-element telescopes is a classic problem. During recent integration and test of the Space Interferometry Mission’s (SIM’s) Astrometric Beam Combiner (ABC), the innovators were faced with aligning two such telescope subsystems in the...

Briefs: Manufacturing & Prototyping
Heat Shield Employing Cured Thermal Protection Material Blocks Bonded in a Large-Cell Honeycomb Matrix

A document describes a new way to integrate thermal protection materials on external surfaces of vehicles that experience the severe heating environments of atmospheric entry from space. Cured blocks of thermal protection materials are bonded...

Briefs: Materials
Asymmetric Supercapacitor for Long-Duration Power Storage

A document discusses a project in which a series of novel hybrid positive electrode materials was developed and tested in asymmetric capacitors with carbon negative electrodes. The electrochemical performance of the hybrid capacitors was characterized by cyclic voltammetry and a DC...

Briefs: Physical Sciences
Airborne Hyperspectral Imaging System

A document discusses a hyperspectral imaging instrument package designed to be carried aboard a helicopter. It was developed to map the depths of Greenland’s supraglacial lakes. The instrument is capable of telescoping to twice its original length, allowing it to be retracted with the door closed during...

Articles: Automotive

IndyCar racing features some of the most technologically sophisticated automobiles in the world today. Weighing just 1,565 pounds and powered by single- or twin-turbocharged 2.2L V6 engines that produce...

Articles: Photonics/Optics

Laser diodes are very sensitive to electrostatic discharge (ESD), current/ voltage transients, and temperature changes, and extra care must be taken to ensure the laser...

Application Briefs: Photonics/Optics

From apples to oranges, from avocado to zucchini — the fruit and vegetable departments of large supermarkets offer an overwhelming choice...

Briefs: Photonics/Optics
885-nm Pumped Ceramic Nd:YAG Master Oscillator Power Amplifier Laser System

The performance of a traditional diode pumped solid-state laser that is typically pumped with 808-nm laser diode array (LDA) and crystalline Nd:YAG was improved by using 885-nm LDAs and ceramic Nd:YAG. The advantage is lower quantum defect, which will improve the thermal...

Briefs: Photonics/Optics

Quantum cascade lasers (QCLs) are unipolar semiconductor lasers, where the wavelength of emitted radiation is determined by the engineering of quantum states within the...

Briefs: Photonics/Optics
Measurement Via Optical Near-Nulling and Subaperture Stitching

A subaperture stitching interferometer system provides near-nulling of a subaperture wavefront reflected from an object of interest over a portion of a surface of the object. A variable optical element located in the radiation path adjustably provides near-nulling to facilitate...

Products: Photonics/Optics

e-con Systems Inc. (St. Louis, MO) has introduced the world’s first stereo vision camera reference design based on Texas Instruments’ OMAP/DM37x family of processors and Gumstix® Overo®...

Products: Photonics/Optics

Carl Zeiss Microscopy (Peabody, MA) has launched the AURIGA® Laser, a new system that combines the AURIGA® CrossBeam (FIB-SEM) workstation with a pulsed micro-focus laser for fast ablation of material. The AURIGA® Laser...

Products: Photonics/Optics

Edmund Optics® (Barrington, NJ) has introduced new Power over Ethernet (PoE) cameras. Each device includes software that allows the user to set area of interest (AOI), gain, exposure, white balance, frame rate, trigger delay,...

Products: Photonics/Optics

Spiricon (North Logan, UT) has introduced BeamMic™, a new laser beam analyzer that combines the essentials for beam analysis in a low-cost, entry-level system. BeamMic includes easy-to-use software that measures...

Products: Photonics/Optics
Optical Sensor

Maxim Integrated Products (Sunnyvale, CA) offers the MAX44000, a digital ambient-light and infrared proximity sensor that detects light like a human eye. Designed using the company’s proprietary BiCMOS technology, the IC integrates three optical sensors, two ADCs, and digital functionality into a 2mm x 2mm x 0.6mm package.

Products: Photonics/Optics

American Polarizers (Reading, PA) has introduced glass 3D circular polarizing filters for use with dual projection systems. API filters feature a range of sizes up to 14" x 20". Tight control of transmission...

Products: Photonics/Optics

Renesas Electronics (Tokyo, Japan) and California Eastern Laboratories (Santa Clara, CA) are now sampling the 405-nm Blue-Violet Laser Diode, the NV4V31MF. The NV4V31MF provides precise laser emission supporting particle...

Articles: Mechanical & Fluid Systems

MEMS is an acronym for Microelectro mechanical Systems; however, most MEMS implementations to date have not been systems at all, but rather devices. This article reports the constituents...

Application Briefs: Sensors/Data Acquisition

NASA is developing the next generation of X-ray optics that could be used in an orbiting X-Ray Observatory. The “lens” consists of thousands of mirrors positioned to reflect X-rays at a...

Application Briefs: Photonics/Optics

NASA’s latest mission to Mars in November 2011 sent the Mars Science Laboratory rover “Curiosity” to assess whether Mars ever had, or still has, an environment...

Techs for License
Piezo-Powered Actuators Offer Reduction in Weight

A set of piezoelectric actuators weighs 4 to 50 times less than other robotic actuators in end-effectors, including hydraulic or solenoid devices. The small piezos use ultra-low power: 3 mA holding current at 6.8 VDC, 7.5 mW. The piezo technology is a scalable actuator moved by a pre-loaded piezo...

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The Art of EV Propulsion System Design

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Adhesives and the Future of Battery Designs

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Using High-Resolution X-ray Computed Tomography to Inspect...

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