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Scientist use household product to fuel sound wave advancement.

Voice calls may be the key to a longer battery life for cell phones.  A group of Korean scientists are now working on a way to power up cell phone batteries with just a little conversation.  

Researchers Young Jun Park and Sang-Woo Kim led the team who discovered how to utilize the prime ingredient in calamine lotion -- zinc oxide --  to develop a nanomaterial that turns sound waves into electricity.

After creating a field of nanowires sandwiched between two electrodes, the group was able to produce a current of 50 millivolts by blasting the field with sound waves of 100db (a normal conversation is 60-70db), according to

"Just as speakers transform electric signals into sound, the opposite process — of turning sound into a source of electrical power — is possible. Sound power can be used for various novel applications including mobile phones that can be charged during conversations and sound-insulating walls near highways that generate electricity from the sound of passing vehicles," said Young Jun Park and Sang-Woo Kim.

In addition to the possibility of using this research to help keep phones charged in the future, the technology is also being considered as a means to add power to electrical grids during rush hour.

Young Jun Park and Sang-Woo Kim presented their findings in an article which appears in the 
 Advanced Materials journal.

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Think of the benefits!
By torpor on 9/14/2010 3:30:29 PM , Rating: 5
If they paint the walls of the Oval Office and Congress with this stuff, the feds could actually do something helpful and productive for a change.

RE: Think of the benefits!
By Smartless on 9/14/2010 3:41:15 PM , Rating: 2
Hell attach it to the stupid modded mopeds they have all around Hawaii or commuter jets to power the AC but a phone? ah come on. If anyone talks louder than 70 decibels they could harness the energy from my slaps to the back of their heads.

RE: Think of the benefits!
By RivuxGamma on 9/14/2010 8:26:44 PM , Rating: 2
F yeah! Also, people from New Jersey are now a power source, thusly becoming not entirely useless to the rest of the U.S.

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