Special Coverage

Soft Robot “Walks” on Any Terrain
Defense Advanced Research Projects Agency
Using Microwaves to Produce High-Quality Graphene
Transducer-Actuator Systems for On-Machine Measurements and Automatic Part Alignment
Wide-Area Surveillance Using HD LWIR Uncooled Sensors
Heavy Lift Wing in Ground (WIG) Cargo Flying Boat
Technique Provides Security for Multi-Robot Systems
Bringing New Vision to Laser Material Processing Systems
NASA Tests Lasers’ Ability to Transmit Data from Space
Converting from Hydraulic Cylinders to Electric Actuators
Automating Optimization and Design Tasks Across Disciplines

MCU/iChip Evaluation Board

Connect One™ (San Jose, CA) offers a reference design and a corresponding evaluation board that bring together Microchip’s PIC24FJ64GA006 16-bit microcontroller (MCU) for application control, and the CO2128 iChip for secure, reliable TCP/IP connectivity to LAN and GPRS networks. Using the evaluation board, developers can quickly and easily develop an IP-en abled embedded system where the application resides on the PIC24 MCU and the networking and security are provided by the CO2128 iChip. The evaluation board provides dual-core Internet secure architecture where all con nectivity features are isolated from the application, providing a natural firewall. The PIC24F MCU provides application developers with RS-232/RS-485 serial connections, one serial peripheral interface, eight general-purpose I/O pins, an analog- to-digital converter, and 64 KB Flash and 8 KB RAM memory. With simple integration of an MII or RMII PHY, a 10/100 BaseT Ethernet link can be created. A UART connection allows users to operate at a baud rate of up to 1 Mbps between the PIC24 and the iChip. The CO2128 operates at an industrial temperature range of -40° to +85° C and is RoHScompliant.

For Free Info Visit Here.

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1U MicroTCA Platform

The MTC5070 from Performance Technologies (Rochester, NY) is a highly integrated 1U MicroTCA™- compliant platform that can support up to six mid-size, single AdvancedMC™ (AMC) modules. The fully deployable MicroTCA platform meets the needs for high-performance, cost-effective, and modular processing in low-profile, appliance-style applications. PCI-Express® and Ethernet switching are supported to each slot. Storage is accommodated by direct SATA/SAS slot-to-slot connections between the AMC sites and the onboard platform management subsystem provides MicroTCA compliant carrier and shelf management.

The MTC5070, AdvancedMC modules, and NexusWare® enabling software offer an optimized application-ready foundation for telecom, wireless, aerospace and defense, and commercial applications. The platform features front-to-back cooling, which is critical for NEBS installations, with both push and pull fans to cool up to 40W per mid-size single slot. AC input or DC input options are available with a removable 300 W power supply. The front I/O panel features LEDs, a reset switch, and a platform management console port. The rear panel has dual 10/100/1000 Mb Ethernet uplink ports, a 10/100 Mb Ethernet out-of-band platform management port, power input, and a power switch. For Free Info Visit http://info.hotims.com/15138-406

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Fiber Optic Bus Extension Systems

AIM-USA (St. Omaha, NE) has introduced the new FOMIS and FOL429 fiber optic bus extension systems. The FOMIS (Fiber Optic MILbus Stub Extension) product provides a highly modular and scalable system capable of extending MIL-STD-1553 bus stubs up to 500 meters. FOMIS systems can also be combined with the FOL429 modules to provide up to 500 meter extensions of ARINC429 data links. FOMIS and FOL429 are designed to support test applications, such as vehicle launch sites, anechoic chambers, and engine testing, that require an extended distance between the Unit Under Test (UUT) and the remote test equipment.

The FOMIS system consists of a FOMIS-F (or FOL429-F) Front-End module and FOMIS-L (or FOL429-L) remote/lab module. The Front-End and Lab modules are interconnected via a COTS fiber optic link (62.5/125uM multimode fiber).

EMC resistant housing allows operation in electromagnetic fields up to 200V/m. Options supporting extended temperature and standalone (battery powered) operation are available. The FOMIS-L is housed in a 19" rack mountable chassis. System operation is completely plug and play, and no software or configuration is required.

For Free Info Visit Here.

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Ruggedized MicroTCA Chassis

Elma Electronic Inc. (Fremont, CA) has introduced a ruggedized ATR chassis for MicroTCA. The MicroTCA chassis is an ARINC 404A Full- Size ATR Long Enclosure, often used in commercial and military aviation. The rugged enclosure features modified front panels that can be secured to the chassis, providing more protection for shock and vibration. Shock absorbers/dampers can also be added to the enclosure for extra protection. Thermal management can be achieved via either convection or conduction-cooling.

The chassis meets the MIL-STD-810E shock/vibration requirements and MIL-STD-461 for electromagnetic interference. The vibration and shock tests were performed according to the IEC 61587 1 and VITA 47 standards in six axes (three spatial axes, with the system rotated by 180 degrees for each axis). The backplane holds six AMCs, one MCH (MicroTCA Carrier Hub), and one power module. Single module slots in the full size are standard, but other configurations are possible with the enclosure’s modular design.

For Free Info Visit Here.

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Multi-core Industrial Servers

Kontron (Poway, CA) has released 2U and 4U KISS industrial servers that bring Intel® Core™2 Duo processor performance to PICMG 1.0 based PCI/ISA applications. The ultra quiet (<35 dB) industrial servers are designed for applications that require high data processing performance without the need for high-speed PCI Express features. Designed around the Intel® 945G chipset with 1066 MHz front side bus and Intel® ICH7 I/O controller hub, the Kontron KISS PCI-759 industrial servers offer scalable processor performance based on the Intel® LGA 755 socket up to the E6400 (2 × 2.16 GHz) Intel® Core™2 Duo processor.

Support for up to 4 GB of DDR2 dual channel RAM is available. With a TDP of only 65 Watts, the Intel® Core™2 Duo processor brings double the performance with power consumption similar to an Intel® Pentium® 4 processor. The Kontron KISS PCI-759 servers are ideal for either upgrading existing applications or for implementing new, power-sensitive industrial PCI/ISA systems. The Kontron KISS PCI-759 industrial servers offer a full range of I/O interfaces for maximum application flexibility: up to 4 × 3Gb/s SATA II for fast hard drive access, 2 × GbE, 7 × USB 2.0, and one parallel and two serial interfaces.

For Free Info Visit Here.

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Using Laser Vibrometry to Validate Gossamer Space Structures

NASA has been developing large ultra-lightweight structures commonly referred to as Gossamer space structures for many years to reduce launch costs and to exploit the unique capabilities of particular concepts. For instance, dish antennas are currently being pursued because they can be inflated in space to sizes as large as 30 meters and then rigidized to enable high data rate communications.

Posted in: Articles, Features, ptb catchall, Photonics, Lasers, Lasers, Lightweight materials, Vibration, Vibration, Test equipment and instrumentation, Test procedures
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Nanophotonics Principles and Applications

The term “nanophotonics” is used to encompass the scientific study of the interaction of matter and light at the nanometer scale. It is possible to design nanometer scale devices to slow down, enhance, produce, or manipulate light by understanding how light behaves as it travels through, or otherwise interacts with, materials at the nanometer scale. Two applications where nanophotonics have had an impact on society are devices used in optical switching for telecommunications and Organic Light Emitting Diodes (OLEDs) used in display technology and lighting.

Posted in: Application Briefs, Applications, ptb catchall, Photonics, Light emitting diodes (LEDs), Optics, Telecommunications, Light emitting diodes (LEDs), Optics, Telecommunications, Displays, Displays, Nanotechnology
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Transmissive Diffractive Optical Element Solar Concentrators

These would weigh and cost less than do mirror-type solar concentrators.

Solar-thermal-radiation concentrators in the form of transmissive diffractive optical elements (DOEs) have been proposed as alternatives to mirror-type solar concentrators now in use. In comparison with functionally equivalent mirror-type solar concentrators, the transmissive, diffractive solar concentrators would weigh and cost less, and would be subject to relaxed mechanical tolerances.

Posted in: Briefs, ptb catchall, Tech Briefs, Photonics, Optics, Optics, Sun and solar, Materials properties
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Nematic Cells for Digital Light Deflection

Smectic A (SmA) prisms can be made in a variety of shapes and are useful for visible spectrum and infrared beam steerage.

Smectic A (SmA) materials can be used in non-mechanical, digital beam deflectors (DBDs) as fillers for passive birefringent prisms based on decoupled pairs of electrically controlled, liquid crystalline polarization rotators, like twisted nematic (TN) cells and passive deflectors. DBDs are used in free-space laser communications, optical fiber communications, optical switches, scanners, and in-situ wavefront correction.

Posted in: Briefs, ptb catchall, Tech Briefs, Photonics, Fiber optics, Lasers, Switches, Wireless communication systems, Fiber optics, Lasers, Switches, Wireless communication systems, Refractory materials
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Improving the Optical Quality Factor of the WGM Resonator

New iterative annealing and polishing increases the resonator’s finesse over the fundamental limit.

Resonators usually are characterized with two partially dependent values: finesse (F) and quality factor (Q). The finesse of an empty Fabry-Perot (FP) resonator is defined solely by the quality of its mirrors and is calculated as

F = πR1/2/(1 – R).

The maximum up-to-date value of reflectivity R ≈ 1 – 1.6 × 10–6 is achieved with dielectric mirrors. An FP resonator made with the mirrors has finesse F = 1.9 × 106. Further practical increase of the finesse of FP resonators is problematic because of the absorption and the scattering of light in the mirror material through fundamental limit on the reflection losses given by the internal material losses and by thermodynamic density fluctuations on the order of parts in 109. The quality factor of a resonator depends on both its finesse and its geometrical size. A one-dimensional FP resonator has Q = 2 F L/λ, where L is the distance between the mirrors and λ is the wavelength. It is easy to see that the quality factor of the resonator is unlimited because L is unlimited. F and Q are equally important.

Posted in: Briefs, ptb catchall, Tech Briefs, Photonics, Mirrors, Performance upgrades
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