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+-   Wireless Power Transfer Using Pinpoint Microwaves-> on Friday April 25 2008, @02:33PM esocid

Submitted by esocid on Friday April 25 2008, @02:33PM
power
esocid writes "Researchers at the University of Michigan have focused microwaves to specks 20 times smaller than their wavelength and five times smaller than other devices have achieved. This development could allow advances such as laptop computers that recharge without plugging in, higher-resolution microscopes for observing molecules, and CDs that can store vastly more data. Focusing light waves and other electromagnetic radiation to points smaller than their wavelength was long thought to be impossible. But by manipulating these waves before they get too far away from their source, scientists and engineers in recent years have been able to break this so-called diffraction limit. Research author Anthony Grbic and his colleagues focused 30-cm microwaves at 1GHz frequency to points approximately 1.5 cm in size. "This is the highest resolution to date achieved at microwave frequencies," Grbic said. "It opens up a whole range of applications, including wireless power transfer, microscopy and beam-shaping devices to focus the radiation. If we can push this to light frequencies, and there are no reasons why this couldn't be done, it will have applications in lithography and data storage.""
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