Skin Wearable Harvests Power With Triboelectric Effect
This new wearable device harvests power from muscle movements under the skin. The postage-stamp-sized device takes advantage of the triboelectric effect.
(Flexible generator converts muscle movements into power)
The new device, which researchers from the National University of Singapore presented at the IEEE MEMS 2015 conference last week, can generate 90 volts of open circuit voltage when touched gently with a finger.
the triboelectric effect, electrical charge builds up on two dissimilar surfaces when they’re put in close contact. When they are pulled apart or flexed, a potential difference is generated and a current starts flowing between them that can be collected using an electrode.
“Skin, the most abundant surface on a human body, is a natural choice for one of the triboelectric layers,” says Lee’s graduate student Lokesh Dhakar. Device fabrication becomes simpler because you don’t need to make one of the layers, he says. “Also skin as a triboelectric material has a high tendency to donate electrons or get positively charged which is important in improving the performance of the device if the other triboelectric layer intentionally chosen as the one with a tendency to get negatively charged.”
For that negative layer, Dhakar and his colleagues created thousands of tiny pillar-like structures on a flexible silicone rubber layer. Underneath the rubber sheet, they bond a 50nm-thick gold film that acts as the device’s electrode. The pillars increase the surface area of the device that touches the skin, which increases friction and hence the current produced.
Fans of sf great Frank Herbert remember that the stillsuit from his 1965 masterpiece Dune used power harvesting from the body (the mechanical energy of breathing to generate power) to run the suit.
When he had tightened the chest to gain maximum pumping action from the motion of breathing, he had known what he did and why.
Via IEEE Spectrum.
Scroll down for more stories in the same category. (Story submitted 1/23/2015)
Follow this kind of news @Technovelgy.
| Email | RSS | Blog It | Stumble | del.icio.us | Digg | Reddit |
you like to contribute a story tip?
Get the URL of the story, and the related sf author, and add
Comment/Join discussion ( 0 )
Related News Stories -
Tiny LEDs Developed For Dust-Sized Computers
'They use sparkles to talk to each other...' - Neal Stephenson, 1995.
Seabreacher, H.G. Winter's 1939 Torpoon
'Ken lay full-length in the padded body compartment, his feet resting on the controlling bars of the directional planes, hands on the torpoon's engine levers.' - HG Winters, 1939.
Project Soli Radar Gesture Chip Now FCC Approved
'He waved his hand and the circuit switched abruptly.' - Philip K. Dick, 1955.
Implosion Fabrication Shrinks 3D Objects To Nanoscale
'Carter had watched miniaturization a hundred times...' - Isaac Asimov, 1965.
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.
Nobe 3-Wheel Electric Vehicle Parking Like I, Robot
Spidercar, Spidercar, does whatever a spidercar does.
Michelin Self-Sealing Tires On Ford's Explorer
'...a seal of compressed plastifoam to save the air.'
Mushroom Eats Plastic, Saves Planet
Fungus Amongus, SaveUs!
Juggalo Face Paint Disrupts Facial Recognition
'... designed to foil facial recognition systems.'
Mojipic Smart Voice Vehicle Emojis
KITT, what's your response?
Unusual Twist On Woman Dates Robot
'My hearing, vision and awareness went along with that excellent imitation of a young Adonis...'
BrainNet Triple Telepathic Gaming Threat
'In the gloomy half-darkness the three idiots sat babbling.'
AVAS Noisemakers Required For EVs By EU
'...a sound tape to supply the noise of a soi-disant "[internal combustion]" engine...'
Pun Generation Via Neural Nets
'You said you wanted him to be able to distinguish between laugh-power in different gags...'
Blood Battery Robotic Fish
'With one fluid motion, it surged forward, plunged, and was gone.'
Lightyear One Solar-Powered Electric Car (Design By Heinlein)
'It drew its power from six square yards of sunpower screens on its low curved roof.'
'Agression Detectors' Don't Work When Spying On Students
'The professional agitators had also learned how to modulate their voices below the danger level...'
Mining Of Golden Asteroid Foretold In 1898 Science Fiction
'This must be a golden planet—this little asteroid.'
Miners! NASA Wants To License RASSOR Excavator
'The borers had been dismantled and packed away.'
Bee+ Robobee Now With Four Wings
'It was a tiny thing, scarcely more than an inch and a half in length...'
CNSILK Robotic Spider Builder
'We could certainly spin a web right through the Solar System, if we can think of a good use for one.'
More SF in the News Stories
More Beyond Technovelgy science news stories