Harvesting Energy From Internal Resonance

Researchers at Ohio State University are working on the idea of harvesting energy from the internal resonance of buildings as they sway with the wind.

He and his colleagues tested the mathematical model in an experiment, where they built a tree-like device out of two small steel beams—one a tree “trunk” and the other a “branch”—connected by a strip of an electromechanical material, polyvinylidene fluoride (PVDF), to convert the structural oscillations into electrical energy.

They installed the model tree on a device that shook it back and forth at high frequencies. At first, to the eye, the tree didn’t seem to move because the device oscillated with only small amplitudes at a high frequency. Regardless, the PVDF produced a small voltage from the motion: about 0.8 volts.

Then they added noise to the system, as if the tree were being randomly nudged slightly more one way or the other. That’s when the tree began displaying what Harne called “saturation phenomena”: It reached a tipping point where the high frequency energy was suddenly channeled into a low frequency oscillation. At this point, the tree swayed noticeably back and forth, with the trunk and branch vibrating in sync. This low frequency motion produced more than double the voltage—around 2 volts.

Those are low voltages, but the experiment was a proof-of-concept: Random energies can produce vibrations that are useful for generating electricity.

In A Journey In Other Worlds, published in 1894, John Jacob Astor IV wrote about "rooftop windmills", which I suppose are more obtrusive than harvesting energy from the house as it flexes in the wind, but it's a similar idea:

Sometimes a man has a windmill on his roof for light and heat; then, the harder the wintry blasts may blow the brighter and warmer becomes the house, the current passing through a storage battery to make it more steady.

Via OSU.

Scroll down for more stories in the same category. (Story submitted 1/22/2016)

Follow this kind of news @Technovelgy.

| Email | RSS | Blog It | Stumble | del.icio.us | Digg | Reddit |

Would you like to contribute a story tip? It's easy:
Get the URL of the story, and the related sf author, and add it here.

Comment/Join discussion ( 0 )

Related News Stories - (" Engineering ")

Helios Modular Touch Screen Wall Lights
'The walls and ceiling bore an irregular spacing of illuminum tiles...' - Richard Morgan, 2003.

Harvest Water From Air With Sunlight
'The atmosphere yielded its moisture with reluctance.' - George Lucas, 1976.

Better Than Dune Chromoplastic? This Guy Might Have Done It
'But when Old Father Sun departs, the chromoplastic reverts to transparency in the dark.' - Frank Herbert, 1965.

Gather, An AI Warehouse Inventory Drone Startup
'It extended three of its tiny arms sideways to lock onto the registration pins...' - James P. Hogan, 1979

 

Google
  Web TechNovelgy.com   

Technovelgy (that's tech-novel-gee!) is devoted to the creative science inventions and ideas of sf authors. Look for the Invention Category that interests you, the Glossary, the Invention Timeline, or see what's New.

 

 

 

 

 

Current News

Hail SmartCan! Your Trash Bin Takes Itself Out
'...a waste can twenty feet away stirred into life.'

Finally! Microsoft Surface Neo And Surface Duo Implement Excellent Courier Idea
'Runcible, whose pages were thicker and more densely packed with computational machinery...'

Tap Strap 2 Now With Air Mouse
'He waved his hand and the circuit switched abruptly.'

Legal Profession Now Fairly Bristling With AI
'The virtual counsel appeared to be about forty-five years old and prosperous.'

Entire Planet Modeled In New MS Flight Sim
'CIC uses [it] to keep track of every bit of spatial information that it owns...'

FlyZoo Robot Hotel By Alibaba
'... hotels that specialized in non-human service.'

Implanted Memories Provide Songs To Birds
Finches can't tell the difference.

Robot Tuna Swims As Fast As Nature's Tuna
'With one fluid motion, it surged forward, plunged, and was gone.'

Shapeshifter Robot Is Comprised Of Cobots
'Its lines wavered, flowed, and then painfully reformed. For an interval, the device struggled with itself...'

Google Commits To Fighting Deepfakes
'The program raced up the screen one scan line at a time, subtly smoothing, deleting and coloring.'

China Accused Of Harvesting Organs From Unwanted Groups
'The death penalty was his immortality, and he would vote the death penalty for any crime at all.'

Osmiridium Sounds Like Science Fiction (But It's Not!)
I can't resist science-fictional elements. Especially when they're real.

When Will We See The First Space Hotel?
'The heart of it was a vast hexagonal structure of welded metal, ten miles across...'

SpaceX Starhopper Has Flash Gordon Style
SpaceX makes retro cool spacecraft.

Mindar The Robot Buddhist Priest Offers A Blessing
'Not working is the hardest work of all.'

Does Your Company Need A 'Chief Dreamer'?
As far as the future is concerned 'they're the only experts we have'.

More SF in the News Stories

More Beyond Technovelgy science news stories

Home | Glossary | Invention Timeline | Category | New | Contact Us | FAQ | Advertise |
Technovelgy.com - where science meets fiction™

Copyright© Technovelgy LLC; all rights reserved.