Invisibility Using Plasmonic Covers
Researchers Andrea Alu and Nader Engheta of the University of Pennsylvania have written a paper on how plasmonic resonance effects might be used to render an object invisible. Their paper (Achieving transparency with plasmonic coatings) describes how plasmonic covers could be used to make an object nearly invisible to an observer.
Most efforts to render an object "invisible" are made in the same general vein as those made by the chameleon - try to make yourself look just like what you are standing in front of. This method takes the more radical approach of trying to avoid scattering light back to the observer's eyes.
(From Romulan Cloaking Device)
However, before you rush right out and buy the Romulan cloaking device that guy at the Star Trek convention was trying to sell you, you might consider the details. Plasmonic resonance can only be used to "hide" very small objects - microscopically small objects - and usually the effect would only work with objects of a very specific shape and with light of a particular wavelength. Since the effect would only work when the wavelength of the light being scattered is similar to the size of the object being shielded, it would not work for objects the size of people or space ships unless the wavelength of radiation used to "see" with was very large.
Thanks to alert readers Adi and W for pointing this article out; read more at engineers devise invisibility shield.
Scroll down for more stories in the same category. (Story submitted 3/2/2005)
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 ( 11 )
Related News Stories -
Home Made Lightsaber?
'Instantly the disk put forth a blue-white beam as thick around as his thumb.'-George Lucas, 1976
Self-Healing Polymer Works Without Catalyst
'It even had an inter-skin layer of gum that could seal the punctures...'- Raymond Z. Gallun, 1951.
Filabot Turns Dull Plastic Junk To 3D Printed Shiny
'Whenever Nell's clothes got too small for her, Harv would pitch them into the deke bin and then have the M.C. make new ones.'-Neal Stephenson, 1995.
Army Wants Black Blacker Than Black
'Well, we have a black coating now thatís ninety-nine percent absorptive...'- Doc Smith, 1940.
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.
Haute Cuisine On International Space Station
'The gas gave sufficient heat for the culinary apparatus...'
Tongue Mouse Created By Valve Engineer
'He pressed hard with his tongue against his right upper first molar.'
K5 Autonomous Data Machine The Future Of Mall Security
''Halt!' A robot guard appeared...'
RF Safe-Stop Shuts Cars Off
'...a police control-override.'
Army's New Bird-Like Surveillance UAV
'The prototype blue-bellied, gray-backed tracer-bird with the wide-angle eye...'
Honda's Tumblebug - The UNI-CUB beta
'A tumblebug does not give a man dignity...'
NASA's LADEE Enters Lunar Orbit
'... dust normally on the surface picks up and keeps a charge.'
3D Printing An Entire Car
"... Almost as good as the original it was printed from."
Aldebaran Robot Talks Like C3PO - Almost
'See Vee Threepio - Vee for versatility - at your service...'
Google's Skin Tattoo Lie Detector
'Three and a half centimetres in diameter, permanently fixed in the centre of his forehead.'
inFORM Dynamic Shape Output Device
Like that pushpin device you remember, but supercharged.
Owlet Vitals, The Future Of Baby Monitoring
'In every diaper there is a fine copper wire...'
Robert Heinlein, Your Personal Electric Helicopter Will Be Ready In 2016
"They were half way home when a single flyer, hopping free in a copter harness, approached the little parade."
WildCat Runs Faster Than You, Untethered
'...moving with such drifting ease that it was like a single solid cloud of black-grey smoke blown at him in silence.' Almost.
HiBot's ACM-R5H Robot Video Shows Graceful Terminator-Style Swimming
'No! No! Aaaaaaarrrrrrgh!'
tDCS Jumpstarts Your Future
'We invented a scanner that can change the labyrinthine neural connections of the brain by tiny electronic impulses...'.
More SF in the News Stories
More Beyond Technovelgy science news stories