nanograss !!

http://www.mphasetech.com/assets/images/nanograss10u.JPG

nanotech batteries : http://www.mphasetech.com/html/nanotechnology.htm

The image is a representative example of “nanograss” tubes. These tubes provide a “Superhydrophobic NanoStructured Surface” atop of which can be placed a droplet.
The droplet sits above the tubes with little or no interaction with the tubes themselves. But by careful engineering the droplet can be made to fall within the space between the tubes encountering a greatly increased surface area and interacting with the tubes themselves to causing current to flow.. The drop can be engineered to occur upon a variety of stimuli: voltage, RF and/or others.

Also see http://www.21stcentury.co.uk/technology/nanograss.asp

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