I've been conjecturing this for years, it's nice to see it finally coming to fruition. Good thinking on the design.

I'm still kind of surprised we don't hear more about piezoelectric tires.

I wonder what the potential lifetime of a device like this is. Also, it makes a big difference if the measured power is peak output or RMS output. I'm assuming for article purposes that this is reporting the peak power output, anybody know?

Whereas the shoe manufacturers struggle to produce most effective shoes, the others are developing devices like this one. The energy harvested usually comes with increase of physical effort and discomfort as a price. It's much more effective to develop little cold fusion device integrated into batteries, than to waste the money and materials into development of tiny energy harvesters. The price of energy harvested will be always higher, than the price of the whole device, not to say about costs and complications with power conducting wires and similar stuff.

I've been conjecturing this for years, it's nice to see it finally coming to fruition. Good thinking on the design.

I'm still kind of surprised we don't hear more about piezoelectric tires.

I think the reason for this is that it would ultimately draw energy from the car's motor.

How about a piezoelectric device of larger size attached to the top of the shock tower ( or suspension) of an automobile. Such a device could assist regenerative braking for battery charging.

You mean if they were integrated into electric vehicles ?

I'm thinking more along the lines of something that is a retrofit for most cars currently on the road. I've seen patents for them, for at least a year or two.

If you were a soldier using this to power your radio, would you be stomping up and down constantly to get it to work?

lol deadbolt!

whats it cost?

Years ago, a club in LA opened that was powered by the pounding of people's feet while dancing. Here's an article on one in the UK:

http://www.dailym...ors.html

Time to integrate this higher-efficiency piezoelectric into our floors?

@ Rawa, this would not make running less efficient... at least not noticably so. The energy of walking/running normally leaves the shoes as heat, whether through the shoe itself or through the ground. This inevitably saves that heat and converts it into electricity

Whereas the shoe manufacturers struggle to produce most effective shoes, the others are developing devices like this one. The energy harvested usually comes with increase of physical effort and discomfort as a price. It's much more effective to develop little cold fusion device integrated into batteries, than to waste the money and materials into development of tiny energy harvesters. The price of energy harvested will be always higher, than the price of the whole device, not to say about costs and complications with power conducting wires and similar stuff.

Are you nuts? The energy harvested would have existed anyway, it just would have been dissipated differently (heat, sound, etc)

Are you nuts? The energy harvested would have existed anyway, it just would have been dissipated differently (heat, sound, etc)

Yes, Rawa is nuts. His sole retort to all things electrical is "cold fusion!!!!!!!!" ignore him