MEMs

Polypeptide-Based Molecular Electronics

Polypeptide supramolecules that will self assemble from solution and will form molecular wires that exploit quantum mechanical transport mechanisms can enable the formation of molecular devices such as transistors, diodes, and sensors. The peptides were designed and then arranged on substrates using self-assembly, Dip-PEN nanolithography, and e-beam assisted lithography. The peptides were characterized using atomic force microscopy (AFM) and the electrical properties of the self-assembled interconnects are characterized as well. These peptides can be nanoengineered/nanoassembled individual building blocks at the molecular level to form conducting channels towards realization of molecular MOSFETs/CMOS device technology.

Posted in: Briefs, Electronics & Computers, Sensors and actuators, Transistors, Additive manufacturing, Forming, Materials properties, Semiconductors
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Photon-Counting Chirped Amplitude Modulation Ladar

This work is a follow-on to an effort to develop a method using Geiger-mode avalanche photodiode (GM-APD) photon-counting detectors in the U.S. Army Research Laboratory’s chirped amplitude modulation (AM) ladar receiver to yield sensitivities approaching the shot noise limit. Such sensitivities represent about four orders of magnitude improvement over the sensitivities of the currently used unity-gain, optoelectronic mixing (OEM) metal-semiconductor-metal (MSM) detectors. A variant of the chirped AM ladar has been experimentally assembled and tested, and new single photon-counting detector products were evaluated in terms of their benefits to the chirped AM ladar.

Posted in: Briefs, Photonics, Measurements, Radar, Semiconductor devices, Product development, Military vehicles and equipment
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Satellite Phone

The 9555 satellite phone from Iridium Satellite LLC (Bethesda, MD) is compact and features an intuitive user interface, speakerphone, Short Messaging Service and e-mail capabilities, an upgraded mini-USB data port, and an internally stowed antenna. The phone is designed to withstand rugged, remote, and industrial environments, and is shock- and water-resistant. It utilizes Iridium’s commercial satellite global communications network for operation in any location or condition where cellular, radio, or landline services are not available.

Features include an illuminated, weather-resistant keypad; a 21-language menu; programmable international codes for automatic dialing; standby time up to 30 hours; and talk time to four hours.

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Signal Translator

Luxul Wireless (Lindon, UT) has released the Shock- WAV™ frequency-translating amplifier (FTA) for use in secure military, defense, and homeland security applications. The FTA converts signals generated by commercial off-the-shelf 5.x wireless LAN technologies to the secured 4.4 to 4.94 GHz government band, and transmits that signal over long distances. The bi-directional FTA enables any 802.11a wireless LAN radio to operate in the government band.

The FTA is available with a 500-mW output power option and a 2-W output power option. The 500-mW version achieves throughput speeds in excess of 15 Mbps at distances over 20 miles; the 2-W version is being tested at distances to 40 miles.

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Messaging Communications Bus

Real-Time Innovations (Sunnyvale, CA) offers RTI Data Distribution Service, Safety-Critical Edition, a smallfootprint version of real-time messaging middleware to meet safety certification standards such as DO-178B. It is designed for communication within and between avionics systems and unmanned aircraft system (UAS) ground control stations. It provides a message bus for integrating distributed components of avionics systems such as control systems, sensors, actuators, and displays. It allows individual subsystems to be added or upgraded without impacting existing software.

The Safety-Critical Edition supports the standard DDS interoperability protocol and the Real- Time Publish-Subscribe Protocol (RTPS). Applications developed using the middleware can seamlessly communicate with other systems developed using RTPS-compliant DDS middleware. This allows military UASs to be integrated with net-centric combat systems.

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Submersible Pressure Sensors

The AST4520 media-isolated, submersible pressure sensor from American Sensor Technologies (Mt. Olive, NJ) features a flush diaphragm steel cage design with stainless steel construction for level monitoring of turbulent tanks with viscous media. It is approved to UL/cUL913 Class 1, Division 1 IS, Groups C and D with an approved barrier. The steel cage design allows for proper flow of media while keeping the sensor at the bottom of the tank or well. It also features an engraved 316L housing and Kynar PVDF cable.

Units operate at temperature ranges of -40 to 185°F and offer pressure ranges from 0-5 to 0-15 PSIG. All units come standard with EMI/RFI protection of 100V/meter and a 4-20mA output.

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Posted in: Products, Sensors
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Avionics Bus Box

Ballard Technology (Everett, WA) offers the Avionics BusBox 2000 Series, a DO-160 box designed for rugged environments. The embedded computer has built-in interfaces for standard peripherals and various avionics databases. Using application-specific software, the box also is expandable. Con - ductively cooled, it is suitable for rugged applications such as serving and recording data, converting protocols, and providing federated control.

The box features a user-programmable PowerPC processor that controls the standard (serial, Ethernet, and USB) and avionics databus (MIL-STD-1553, ARINC 429/708717) interfaces. Programs are developed on a host computer and uploaded to the box, where they can be saved in non-volatile Flash memory. Applications can then boot from the Flash memory and run without host intervention.

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Posted in: Products, Aviation
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Aerospace Engine Components

Sandvik Coromant (Fairlawn, NJ) has released an Aerospace Engine Solutions Package that contains five standard products to support the aerospace engine industry. The GC1115 is a PVD-coated grade for high-temperature alloys that offers wear resistance; the CoroCut angled inserts are a grooving system that uses 24 standard articles in grade GC1115 to provide access to complex features in disc, shaft, and casing manufacturing; and the SL70 modular serration lock and oval blade coupling combines with Coromant Capto to provide accessibility and stability. The carbide solutions come equipped with high-pressure coolant nozzles and are available for CoroCut, ceramic RCGX, and carbide RCMT.

The other two products are the CoroMill Plura conical ball nose end mills, which are 12 standard articles with radii and taper options for the 5-axis machining of titanium blisk and impeller turbo parts; and the CoroMill 316 solid carbide with exchangeable head coupling that has diameter and radii options for features such as scallop milling on discs, casings, and shafts.

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Thermal Wind Tunnel

OMEGA Engineering (Stamford, CT) offers the WT-2000 thermal wind tunnel in a portable, benchtop design. Made of clear polycarbonate and PVC, it is designed to provide uniform and repeatable airflow up to 1000 fpm. The control box allows for open-loop, full-scale operation of individual fans, groups of two fans, or all fans at once. The large test chamber with a hinged access door and access panel allows for comparison testing or different size heat sinks and circuit boards. The unit is CE compliant.

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Robotic Platform

The Chaos™ robotic platform from Auton - omous Solutions (Logan, UT) is designed to remotely access hazardous areas previously accessible only by foot, reducing risk to personnel. The robot is able to navigate over rough, steep, and loose terrain with four independent drive tracks that can continuously change orientation a full 360 degrees. It can alter its pitch, roll, and yaw to navigate surfaces too uneven for other tracked platforms.

The robot features a high payload capacity and an available manipulator arm with a 50-pound capacity at full reach of 72". Its low base weight allows it to be lifted out of a vehicle and deployed by two people. As a JAUS-compatible platform, the robot allows addition of a variety of sensors and other robotic payloads.

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