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: email@example.com.
Samsung's Galaxy line of smartphones used to fare quite well in the repairability department, but last year's flagship S5 model took a tumble, scoring a meh-inducing 5/10. Will the newly redesigned S6 lead us back into star-studded territory, or will we sink further into the depths of a repairability black hole?
In 2003, the world contained just over 500 million Internet-connected devices. By 2010, this figure had risen to 12.5 billion connected objects, almost six devices per individual with access to the Internet. Now, as we move into 2015, the number of connected 'things' is expected to reach 25 billion, ultimately edging toward 50 billion by the end of the decade.
NASA engineer Brian Trease studied abroad in Japan as a high school student and used to fold fast-food wrappers into cranes using origami techniques he learned in library books. Inspired by this, he began to imagine that origami could be applied to building spacecraft components, particularly solar panels that could one day send solar power from space to be used on earth.
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