A University of California, Berkeley (www.berkeley.edu) team, headed by physics professor Alex Zetti, has built a 500 nm electric motor—the world's smallest—from carbon nanotubes and silicon. The motor is the first device that allows external wires and a rotor. In this case, the rotor is between 100 to 300 nm long, while the carbon nanotube shaft to which it is attached is only a few atoms across, perhaps 5 to 10 nm, the team says. Applications might include optical switching, or the spinning rotor could be used to mix liquids in microfluidic devices, the team adds.
Days after a massive, distributed denial-of-service attack took down dozens of major websites around the country, ARM Holdings plc is rolling out a pair of new processor architectures aimed at shoring up IoT security.
Dow Chemical and several other companies have launched a program in Omaha, Neb. to divert about 36 tons of plastics from landfills in its first phase, and convert it into energy used for cement production.
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