Powerful Magnets Can Control Both Heat and Sound in Materials

March 25, 2015 12:20 PM

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There may be a new technique to control heat with a magnetic field. Researchers have found that a magnetic field roughly the size of a medical MRI can reduce the amount of heat flowing through a semiconductor by 12 percent.

"This adds a new dimension to our understanding of acoustic waves," said Joseph Heremans, one of the researchers, in a news release. "We've shown that we can steer heat magnetically. With a strong enough magnetic field, we should be able to steer sound waves, too."

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