 |
Full-Size Invisibility Cloak Now Possible
Scientists from the University of Central Florida have created the first large-area metamaterial (cloaking material) for the visible-light spectral range*.
(Negative-index metamaterial (11 layers)
transferred to a glass substrate by nano transfer
printing (insert: enlarged view))
UCF assistant professor Debashis Chanda and fellow optical and nanotech experts were able to achieve visible-light cloaking over a large area by using a multilayer 3-D open-mesh (fishnet) metamaterial to control the material’s refractive index** and thus control bending of light.To create the material, they used a nanotransfer printing technique that creates metal/dielectric composite films. These are stacked in a 3-D architecture to achieve nanoscale patterns for operation in the visible spectral range. Control of electromagnetic resonances over the 3-D space by structural manipulation allows precise control over propagation of light.
Everyone thinks of Harry Potter in this context, but I think about Ray Cummings. In his excellent 1931 novel Brigands of the Moon, he writes about an invisible cloak:
The invisible cloak. We laid it on my grid, and I adjusted its mechanism. I donned it and drew its hood, and threw on its current."All right, Anita?"
"Yes"
"Can you see me?"
"No." (Read more about Ray Cummings' invisible cloak)
From a href="http://www.kurzweilai.net/how-to-create-a-large-area-visible-light-invisibility-cloak" target="_blank">Kurzweil AI.
Scroll down for more stories in the same category. (Story submitted 4/8/2014)
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 ")
Phil Nuyttnn's City Under The Sea
''Under the lower roof there was no water, but a clear and luminous atmosphere...' - Andre Laurie, 1895.
Stick-On Tape Speakers, As Predicted By Bruce Sterling
Flexible tape speakers, someday.
Has Climate Change Already Been Solved By Aliens?
'I had explained," said Nessus, "that our civilisation was dying in its own waste heat.' - Larry Niven, 1970.
Skin Electronics 3D Printed
'June's body is a tracery of lambent lines, like some arcane capillary circuitry...' - Paul Di Filippo, 1985
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
Jaguar I-Pace Audible Vehicle Alert System For EVs
'Of course not a vehicle moved by means of internal explosions of a derivative of rock oil...'
Autonomous 'Fiberbots' Weave Large Structures
'It extrudes material like a spider.'
Birds Aren't Real - Wake Up, California! (With Bird Watching Guide)
'When he had first built them, they had been crude indeed, flying mechanisms with little more than a reflex-response unit.'
Self-Healing Material Pulls Carbon Out Of The Air
'... could seal the punctures.'
IRL Glasses Block Screens, Limit Vision To Real Life
'If you couldn't see the ads, how would you know what was fashionable?'
Testing The Single-Person Spacecraft
'...the lower part of the suit was simply a rigid cylinder.'
Shapeshifting Materials Transform By Light
'Its lines wavered, flowed, and then painfully reformed.'
Fully Automated Farm Iron Ox Hydroponics
'Had these machines in some incredible fashion been provided with brains?'
BrainNet Social Network Of Brains
'I used my implant to tell MILLIE what we wanted and she took care of it'
Phil Nuyttnn's City Under The Sea
'Under the lower roof there was no water, but a clear and luminous atmosphere...'
IONITY Opens First 10 Fast-Charging Stations
'Recharge the batteries... in almost every town and village...'
Superstrong Multilayer Metal-Graphene Composite Material
Negligible increase in weight increased material strength by hundreds of times.
Deepfakes Imperil Democracy (George Orwell, Right Again)
'All history was a palimpsest, scraped clean and reinscribed exactly as often as was necessary.'
String Art Courtesy Of Robot Artist
The number of different ways to span a thread between a larger number of hooks is astronomical.
Still Wondering If You'd Work For A Robot Boss?
'This is all coming to you courtesy of the simstim unit wired into your deck, of course.'
World's First Autonomous Tram In Germany
What's it like for autonomous trams when they're turned off at night?
