Smart Contact Lenses Charges With 3D Printed Antenna
Smart contact lenses can now be powered with an integrated energy-harvesting antenna printed directly on the lens. This advance comes from Korean researchers.
(Smart contact lens diagram)
Researchers in the Republic of Korea showed that a specific mixture of carbon molecules, polymers and solvent can be used to print a supercapacitor’s electrodes onto a lens with micron-scale precision via a technique called direct ink writing. The same process deposits a UV-cured ionic liquid that functions as the supercapacitor’s electrolyte. As a proof-of-concept, the work could one day lead to smart contact lenses with sensors for health monitoring, or with integrated displays for augmented reality applications...
Trailing wires from one’s eyes to a battery pack is obviously unacceptable, so smart lenses will need a store of electrical charge incorporated into the lens, as well as a way to replenish it wirelessly. For Jang-Ung Park of Yonsei University, Sang-Young Lee of Ulsan National Institute of Science and Technology (UNIST) and colleagues, the solution was to integrate a miniature, flexible supercapacitor and an energy-harvesting antenna to recharge it...
“Commercial supercapacitors are composed of sheet-type components that are stacked in fixed cylindrical or rectangular cases, which make them too bulky and rigid to fit into a tiny, soft smart contact lens,” explains Park. “The breakthrough was to make the supercapacitor components printable in an ink form. The component inks were drawn around the edge of the smart contact lens, so they won’t block the optical view of the user.”
Science fiction readers are fortunate to have had this idea presented to them several years ago. In his 2001 novella Fast Times at Fairmont High, sf writer, computer scientist and mathematician Vernor Vinge described a near-future world in which everyone used smart contact lens displays. In his 2006 novel Rainbows End, set in the same milieu, he describes them this way:
Miri... leaned her head forward, and stuck a finger close to her right eye. "You already know about contacts, right? Wanna see one?" Her hand came away from her eye. A tiny disk sat on the tip of her middle finger. It was the size and shape of the contact lenses he had known. He hadn't expected more, but... he bent closed and looked. After a moment, he realized that it was not quite a clear lens. Speckles of colored brightness swirled and gathered in it. "I'm driving it at safety max, or you wouldn't see the lights." The tiny lens became hazy, then frosty white. "Uk. It powered down. But you get the idea.."
(Read more about Vinge's smart contact lenses)
Via Physics World and Printing of wirelessly rechargeable solid-state supercapacitors for soft, smart contact lenses with continuous operations.
Scroll down for more stories in the same category. (Story submitted 1/9/2020)
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 -
Metalenses Now Reconfigurable With Liquid Crystal
'Hufhuf oil held in static tension...' - Frank Herbert, 1965.
NDB Nuclear Waste Battery Lasts A Lifetime
'Trillions of units of power could be compressed thus into an inch-square cube of what looked like blue-white ice.' - Edmond Hamilton, 1940.
Blaux Your Personal Commuter Cooling Unit
A cooling unit had to be strapped to every commuter's back, by law.
SunnyFive 'Window' Has Full Spectrum Angled Natural Light
'On the ceilings are screens.' - Stanislaw Lem, 1961.
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.
Gyroscopic Median-Straddling Mass Transit Vehicles
'It was among these leviathans that the little gyrocar was daring to thrust its puny self...'
Bigrating Laser Beam-Riding Light Sail Is Self-Correcting
'That sail will be twenty thousand miles at the wide part.'
ISS Astronauts Test Estee Lauder 'Advanced Night Repair' Skin Serum
'Out in the New Moon, just ask for what you want...'
LG Wing Twisting Smartphone Might Be Fun
'A polycarbon screen unfurled...'
Mushroom Coffin Returns You To Nature, Naturally
'She touched the leaf. She was wanted.'
Will ATT Offer Ad-Subsidized Cellphone Service
'For long-distance calls the ratio of commercial to conversation was as high as 10 to 1...'
Gyro-X Self-Balancing Two-Wheeler Car
'Indeed, the gyrocar was a sight to make a man look twice.'
Beat Covid-19 With AIR By MicroClimate - At Last I Get My PAPR
More than just a bubble.
Mi TV LUX Transparent Edition OLED TV
The Look of Things To Come.
Metalenses Now Reconfigurable With Liquid Crystal
'Hufhuf oil held in static tension...'
'Alexa For Residential' A Landlord's Dream (Tenant's Nightmare?)
'...unseen mechanical entities... that are in our very midst. One of them following each of us.'
Gather Ye Moonrocks While Ye May
'The law of filing on newly discovered asteroids was definite.'
InMotion V11 Electric Unicycle Gets Air (Video)
'A tumblebug does not give a man dignity...'
Rid Thyself Of Ads On The Newsbox
'Can't we scramble that commercial?'
A.I. Jesus Proclaims Machine Gospel
'... he crossed the waiting room to the Padre booth; inside he put a dime into the slot and dialed at random.'
Google's Remixed 'Your News Update' ala Heinlein, Clarke, Pohl
'Perhaps we had better use the soundtrack and let it hunt.'
More SF in the News Stories
More Beyond Technovelgy science news stories