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Power

Student Invention May Significantly Extend Mobile Device Battery Life 160

imamac writes with this excerpt from news out of Carleton University: "Atif Shamim, an electronics PhD student at Carleton University, has built a prototype that extends the battery life of portable gadgets such as the iPhone and BlackBerry, by getting rid of all the wires used to connect the electronic circuits with the antenna. ... The invention involves a packaging technique to connect the antenna with the circuits via a wireless connection between a micro-antenna embedded within the circuits on the chip. 'This has not been tried before — that the circuits are connected to the antenna wirelessly. They've been connected through wires and a bunch of other components. That's where the power gets lost,' Mr. Shamim said." The story's headline claims the breakthrough can extend battery life by up to 12 times, but that seems to be a misinterpretation of Shamim's claim that his method reduces the power required to operate the antenna by a factor of about 12; 3.3 mW down from 38 mW. The research paper (PDF) is available at the Microwave Journal. imamac adds, "Unlike many of the breakthroughs we read about here and elsewhere, this seems like it has a very high probability of market acceptance and actual implementation."
Sci-Fi

Submission + - World's first tricorder created by Purdue

aeoneal writes: According to Science Daily, mass spectrometry is no longer limited to what can be taken to the lab. Purdue researchers have created a handy 20 lb. device that combines mass spectrometry with DESI (desorption electrospray ionization), allowing chemical composition to be determined outside of a vacuum chamber. Purdue suggests this could be useful for everything from detecting explosive substances or cancer to predicting disease. Researcher R. Graham Cooks says, "We like to compare it to the tricorder because it is truly a hand-held instrument that yields information about the precise chemical composition of samples in a matter of minutes without harming the samples."

Feed Darpa's Ultrasonic Cloak (wired.com)

The Pentagon's way-out researchers want to use a screen of directed sound to turn noisy tanks and Humvees quiet and stealthy. In Danger Room.


Media

Submission + - New Fair Use Bill introduced today to change DMCA

An anonymous reader writes: WashingtonPost.com notes that Reps Boucher(D-Va) and Dolittle(R-Calif) today introduced the FAIR USE Act that updates the DMCA to "make it easier for digital media consumers to use the content they buy." Boucher's statement on the bill says "The Digital Millennium Copyright Act dramatically tilted the copyright balance toward complete copyright protection at the expense of the public's right to fair use..." Backing the bill is the Consumer Electronics Association, the Home Recording Rights Coalition, the American Library Association and others.

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