Betty Lise Anderson wasn't looking for the Holy Grail of optical interconnections, but she thinks she may have helped find it. The associate professor of electrical engineering at Ohio State University (OSU) worked with Professor Emeritus Stuart A. Collins Jr. in the ElectroScience Laboratory developing an optical true-time delay for phased-array radar. And then one day, the idea for the optical interconnect hit them. "We reasoned that with a few modifications the device could help eliminate data-transfer bottlenecks," says Anderson. She says the new device transfers data faster than other devices, in electronic hubs that transfer light pulses to electrical signals and then back into light pulses, when downloading information over the Internet. The interconnect uses mirrors for reflecting the light, instead of transferring the light into electrons and then back into light again. "We joked that if we could find a way to make this work, we could rule the universe," says Anderson. The new patented device is a silicon computer chip covered with hundreds of thousands of tiny mirrors. Each mirror measures only a few tens of millionths of a meter across. The mirrors catch individual beams of light from fiber optic cable and reflect them to their destination, bypassing the traditional electronics that slow optic transmission. Andersen explains that the OSU design is tolerant of vibrations and has a built-in redundancy. "If one micromirror fails, another will take its place," she says. The OptiConnect Company is developing and will eventually commercialize the technology. For more information, call (614) 675-4100 or go to www.osu.edu.
What makes this movie stand out from the typical high school sports story is that the teenagers are undocumented immigrants, and the big game is a NASA-sponsored marine robotics competition. Like many other Hollywood movies, however, Spare Parts only tells part of the story. What the film shows -- and doesn’t show -- raises important issues affecting STEM education in the US.
Instead of sifting through huge amounts of technical data looking for answers to assembly problems, engineers can now benefit from 3M's new initiative -- 3M Assembly Solutions. The company has organized its wealth of adhesive and tape solutions into six typical application areas, making it easier to find the best products to solve their real-world assembly and bonding problems.
Load dump occurs when a discharged battery is disconnected while the alternator is generating current and other loads remain on the alternator circuit. If left alone, the electrical spikes and transients will be transmitted along the power line, leading to malfunctions in individual electronics/sensors or permanent damage to the vehicle’s electronic system. Bottom line: An uncontrolled load dump threatens the overall safety and reliability of the vehicle.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.