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What"s the big deal ?, Full story at http://www.physorg.com/news95001943.html

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holoman	Posted: Apr 6 2007, 03:14 PM Quote
Advanced Member Group: Members Posts: 518 Joined: 6-May 04 Positive Feedback: 66.67% Feedback Score: 0	http://www.physorg.com/news95001943.html piezoelectric materials made from perovkites has been around for a long as I can remember. Maybe someday we will start building highways out of the material so we can get energy from trucks and cars. Now that would be using piezoelectrics for something worthwhile.
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StevenA

Posted: Apr 6 2007, 06:58 PM

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Wang and his group members Xudong Wang, Jinhui Song and Jin Liu expect that with optimization, their nanogenerator could produce as much as 4 watts per cubic centimeter – based on a calculation for a single nanowire.

I'm certain there are some catches in the "4 watts per cubic centimeter" statement. If the scale is correct, then most likely that would only be achieveable if the mass was distributed and not packaged as a cube or it would need to be working with converting thermal energy into eletricity as well.

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That would be enough to power a broad range of nanometer-scale defense, environmental and biomedical applications, including biosensors implanted in the body, environmental monitors – and even nanoscale robots.

I'm certain there are better uses for it than most of these.

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AgentG	Posted: Apr 9 2007, 05:46 PM Quote
Newbie Group: Members Posts: 23 Joined: 7-February 07 Positive Feedback: 0% Feedback Score: 0	There is no mention of the voltage difference produced with this device. Only an estimate for the total power per cubic centimeter.
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MarkL	Posted: Apr 14 2007, 01:06 AM Quote
Unregistered	Could the nanowires be made small enough to collect energy from Brownian motion?

Les Slater	Posted: Sep 3 2007, 01:57 AM Quote
Unregistered	I too have been concerned with piezo harvesting of brownian motion. I found this thread by googling brownian nano piezo power generation. One problem I have always confronted is the rectification of the AC signals. Looks like this is solved here. Does the nano tube scale to where brownian motion would produce an electron flow and would it be enough to get by the shchotky barrier?

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