astro
October 21, 2003, 3:03am
1
Powering small devices with water -
Small electric charge could be used in calculators, phones
THE TECHNOLOGY is based on the interaction between liquids and solids on a very small scale. The surface of the solid receives a small charge that attracts opposite-charged ions in the liquid and repels like-charged ions. The process creates an electric double layer (EDL)—a thin liquid layer with a net charge that ranges from a thickness of several nanometers to a few micrometers.
Professors Daniel Kwok and Larry Kostiuk from the University of Alberta created channels similar in size to the EDL and forced liquid through the channels, resulting in a movement of net charges downstream. Because the ions that are repelled by the surface move faster than the ions that are attracted to the surface, a current is generated, which leads to a voltage difference across the ends of the channel if the solid is a nonconducting material
Wearia
October 21, 2003, 4:21am
2
Hopefully they’ll find some way to apply it easily, and we’ll get water batteries in a few years.
And to think, I passed up a tour of the U of A science facilites a few months ago.
Does this mean the calculator, phones need to have water in them to function? How much water would be required to supply the voltage for a phone?
jovan
October 21, 2003, 11:06am
4
At this stage, I don’t this anybody knows.
The beeb has a slightly longer story:
“The applications in electronics and microelectronic devices are very exciting,” said Professor Kostiuk.
“This technology could provide a new power source for devices such as mobile phones or calculators which could be charged up by pumping water to high pressure.”
They suggest more research needs to be done to develop the potential of how their prototype device can be turned into a battery for commercial use.
“Wow! I didn’t know you had a lake on your property!”
“I don’t. That’s my cell phone battery.”
lieu
October 21, 2003, 4:21pm
6
Wow, I hope this doesn’t drive up the price of urine.