Ever lose data because your computer loses power? Chia-Ling Chien, a professor of physics at the Krieger School of Arts and Sciences at Johns Hopkins University, may have a solution. He developed a new chromium dioxide material called "half-metallic ferromagnet" that could change the way computer memory works. Computer memory currently uses dynamic random access memory (DRAM). Chien's material enables a new technology called magnetic random access memory (MRAM), which he says will allow retention of data even when power is lost. "Capacitors in current memory systems leak and have to be refreshed to prevent data loss," says Chien. "MRAM relies on magnetic orientation. Loss of power would not mean a loss of the data it stores," he says. MRAM harnesses the power of the electron's spin, a characteristic that conventional electronic circuits do not use. Electronic spin and a material's magnetic property are linked. The new chromium dioxide material is 96% spin-polarized, meaning that nearly all electrons spin in the same orientation. The spin-polarized material is thought to be useful in electrodes, where controlling the magnetization makes the junction switch between high and low electrical resistance. For more information, go to www.pha.jhu.edu.
This Gadget Freak Review looks at a keyless Bluetooth padlock that works with your smartphone, along with a system that tracks your sleep behavior and wakes you at the perfect time in your sleep cycle to avoid morning grogginess.
Siemens released Intosite, a cloud-based, location-aware SaaS app that lets users navigate a virtual production facility in much of the same fashion as traversing through Google Earth. Users can access PLM, IT, and other pertinent information for specific points on a factory floor or at an outdoor location.
Since 1987, teams of engineers around the world have built solar cars to participate in a road race around Australia called the World Solar Challenge, being tested on the race time, kilometers traveled, practicality, and energy used by the vehicles they invent.
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.