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Shake that power baby!
OK I have the startings of an idea based on tribo-electrics which in turn is based on the science of triboluminescence.
The basic premise is that triboluminescence, an optical phenomenon in which light is generated when material is pulled apart, ripped, scratched, crushed, or rubbed through the breaking of chemical bonds in the material(1) could in fact be used to generate power which could be harvested for use in any device.
The phenomenon is not fully understood, but appears to be caused by the separation and reunification of electrical charges. Now I have no idea how much energy is produced, let-alone how much could be captured but I think that if you could contain a suitably large number of correctly charged particles in a sealed container (say a tube) you could shake that tube causing friction and therefore discharge.
If (as I suspect) the tube will need to be larger then that suitable fo human shaking, perhaps it could be built into bikes or vehicles to capture natural movement and convert it to useful energy.
Like I said, a germ of an idea and one that will need some more careful thought.
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Comment by Per-Erik Daniel Eriksson on March 21, 2010 at 7:18pm
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The problem with all forms innovation in the area of energy is that it is quite heavilly constrained by the laws of thermodynamics. We already have machines that are excellent att harvesting mechanical energy (alternators). However, the interesting part in this, I believe, is that it seems to be able to capture energy from stochastic motion, whereas the alternator is limited to the case of a rotating shaft.
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Comment by ben on March 21, 2010 at 8:05pm
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Per-Erik Daniel,
First of all many thanks for the feedback. I'm no expert on stochastic motion and had to look it up - http://adsabs.harvard.edu/abs/1983ApMat..38.....L to get my mind straight.
After reading this I think you might be onto something. It would seem that stochastic motion in nonlinear oscillator systems (like a theoretical tribo-electric tube) has some application for charged-particle confinement and therefore a reasonable contender for a power harvester.
Many, many thanks...I'll keep you posted on this.
Ben
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Had a further thought. Power generation is not necessarily the issue. Designing more power efficient devices is key. This will obviously happen in a generational/Moores Law type of way but that might not be quick enough. There may be more traction in developing power efficiency over novel way to generate/harvest power in the first place.
Get that right then small, kinetic based energy generation become much, much more viable.
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