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Packing peanuts are the key to fast-charging batteries
Hate buying some new gadget, only to wind up with a sea of packing peanuts that do little more than spill on to the floor? Don't be too quick to toss them out -- they may be the key to a new generation of lithium-ion batteries. Purdue University researchers have developed a heating process that converts these shipping leftovers into anodes (where lithium ions are stored during charging) made from carbon. On top of eliminating waste, this technique should lead to batteries that recharge much faster. The carbon anodes are only a tenth as thick as their commercially available counterparts, so they don't produce nearly as much electrical resistance.
Your polystyrene dreams can come true with an industrial robot arm
If you've been waiting to command a giant robot arm to do your artistic bidding, Robochop is here and it'll let you hack (or delicately sculpt) your own custom design from a 50-centimeter cube of "durable foam". You (or people visiting the robot arms in person) will be able to design and create a piece of furniture through a web app that will go live online at Code-n.org from March 15. More than the polystyrene creations themselves, the appeal lies in the spectacle of seeing a giant industrial robot cut away with a hot wire cutting tool: four arms will be slicing their way through 2,000 yellow blocks at Hanover's CeBIT tech show next month.
Nanotubes sniff out rotting fruit, your dorm room might be next
Our favorite ultra-skinny molecules have performed a lot of useful functions over the years, but keeping fruit flies away was never one of them. Now MIT scientists, with US Army funding, have discovered a way to give these nanotubes the canine-like sense of smell needed to stop produce spoilage and waste. Doping sheets of them with copper and polystyrene introduces a speed-trap for electrons, slowing them and allowing the detection of ethylene gas vented during ripening. A sensor produced from such a substance could be combined with an RFID chip, giving grocers a cheaper way to monitor freshness and discount produce before it's too late. If that works, the team may target mold and bacteria detection next, giving you scientific proof that your roommate needs to wash his socks.
22-foot tall robot crafted entirely from excess styrofoam
Building a big robot is nothing to congratulate yourself on, but doing it in this manner is certainly worthy of a little self-indulgence. The creature you see standing before you is a 22-foot tall Styrobot constructed entirely from spare polystyrene packing materials, and no, each piece didn't just show up that way. Michael Salter managed to whittle away on this beast until its completion, and now we're hearing that it'll be going on a short demonstration tour before being "decommissioned." We say throw a brain in there and see what happens when you cut it loose.[Via TechDigest]
