With today's emphasis on biological terrorism, engineers from Purdue University hope that their nanoantennas may be used to produce sensors millions of times more sensitive than current technology. Vladimir Shalaev, a Purdue School of Electrical and Computer Engineering professor, and associates demonstrated through mathematical simulations that nanometer-scale antennas made of "left-handed" metal wires and spheres 10-nm in size might be capable of detecting a single molecule of a chemical or biological agent. Left-handed materials are able to reverse the normal behavior of visible light and other forms of electromagnetic radiation. "They have this unique ability because electrons are free to move about in these nanostructured metals," says Shalaev. "All of the work in this area so far has been done in the microwave spectral range. We believe that this is the first project for these materials in the visible range." Shalaev says these types of materials may accomplish better performance than all existing materials, in terms of making images and manipulating light. As a result, they could have a number of applications such as super lenses for medical diagnostics, or faster and more compact circuits and computers that use photons instead of electrons. For more information, contact Vladimir Shalaev by phone: 765-494-9855, or e-mail: firstname.lastname@example.org.
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.