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Urine-Powered Batteries

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Digixcam

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Singapore scientists at the Institute of Bioengineering and Nanotechnology (IBN) have developed the first urine-activated paper battery which will generate enough electricity to power fully integrated biochip systems, making it the perfect power source for cheap, credit card-sized disposable healthcare test-kits for diseases such as diabetes.

The urine battery unit comprises of a cathode sandwiched between an anode and an electron-collecting layer. When a droplet of urine (0.2ml) is placed on the device, the capillary force drives the urine into the cathode layer and the battery is activated.

Full Story with Photo of Urine Battery: http://digitalcamera.101reviews.com/news/urine-powered-batteries
 
Am I right in thinking it could be any conductive fluid?
So it's not really 'urine-POWERED' it's just a battery that's activated when you put a conductive fluid on it.

..blood
...water
...orange juice...
 
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