Science Fiction Dictionary
A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z

 

Invisibility Cloaks Get Bigger

Print out big sheets of metamaterials to create real-life invisibility cloaks? A new technique developed by John Rogers, a professor of materials science and engineering at the University of Illinois at Urbana-Champaign, seems to make this possible.

Although practical invisibility cloaks are still in the future, we've been getting close. However, most cloaking devices are too small (see Invisibility Cloaks Seen As Possible With Metamaterials and Invisibility Cloak Fools Naked Eye ), or require the manipulation of spacetime (see Spacetime Cloak Of Invisibility Conceals Events ).


(Largest sheet of metamaterial ever made)

Metamaterials are made up of intricately patterned layers, often of metals. The patterns must be on the same scale as the wavelength of the light they're designed to interact with. In the case of visible and near-infrared light, this means features on the nanoscale. Researchers have been making these materials with such time-consuming methods as electron-beam lithography.

Rogers has developed a stamp-based printing method for generating large pieces of one of the most promising types of metamaterial, which can make near-infrared light bend the "wrong" way when it passes through. Materials with this so-called negative index of refraction are particularly promising for making superlenses, night-vision invisibility cloaks, and sophisticated waveguides for telecommunications.

The Illinois group starts by molding a hard plastic stamp that's covered with a raised fishnet pattern. The stamp is then placed in an evaporation chamber and coated with a sacrificial layer, followed by alternating layers of the metamaterial ingredients—silver and magnesium fluoride—to form a layered mesh on the stamp. The stamp is then placed on a sheet of glass or flexible plastic and the sacrificial layer is etched away, transferring the patterned metal to the surface. So far Rogers says he's made metamaterial sheets a few inches per side, but by using more than one stamp he expects to increase that to square feet.

As far as I know, the first reference to an invisibility cloak in science fiction is the invisible cloak from Ray Cummings 1931 classic Brigands of the Moon. Humans have been fascinated by this topic; Greek and Norse mythology have plenty of examples. The first science fiction novel about invisibility is, of course, The Invisible Man, by H.G. Wells in 1897.

Via MIT's Technology Review.

Scroll down for more stories in the same category. (Story submitted 6/11/2011)

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 - (" Material ")

Goldene - A Two-Dimensional Sheet Of Gold One Atom Thick
'Hasan always pitched a Gauzy - a one-molecule-layer tent, opaque, feather-light, and very tough.' - Roger Zelazny, 1966.

GNoME AI From DeepMind Invents Millions Of New Materials
'...the legendary creativity of our finest human authors pales against the mathematical indefatigability of GNoME.'

Omniphobic Liquid-like Surfaces And de Camp's Telelubricator (1940)
'So the surface, to the depth of a few molecules, is put in the condition of a supercooled liquid as long as the beam is focused on it.' - L. Sprague de Camp, 1940.

MXenes - Atomic-Thin Metal Sheets Now Easier To Make
'...a rolled-up sheet of a thin, dark metal strange to them.' - John Edwards, 1934.

 

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.

 

 

 

 

Science Fiction Timeline
1600-1899
1900-1939
1940's   1950's
1960's   1970's
1980's   1990's
2000's   2010's

Current News

Live Stream With Meta-Ban Multimodal Smart Glasses
'...the bug-eyed, opaque gape of her True-Vu lenses.'

'Autonomous' Waymo Improves Driving With Remote Human Operators
'...some bored drone pusher in a remote driving centre has got your life... in his hands.'

Will Whales Be Our First Contact?
'He had piloted the Adastra to its first contact with the civilization of another solar system.'

Heinlein’s Controlway - Connected and Automated Vehicle (CAV) Corridor In Michigan
'Well, that's us,' said Lazarus.

SliceIt! Why Not Teach Robots To Use Knives?
'One building now gushed forth smoke and another stench that was unmistakable.'

NYC/Dublin Portal Fails To Meet 'Guardian Of Forever' Standards
I am the Guardian of Forever.

FLOAT Levitating Train On The Moon ala Clarke
'The low-slung monorail car, straddling its single track, bored through the shadows on a slowly rising course.'

Singapore Writers Push Back On LLM Training
'...we've promised him a generous pension from the royalties.'

SpaceX Intros Extravehicular Activity Suit
'Provision had been made to meet the terrific cold which we knew would be encountered the moment we had passed beyond the atmosphere.'

Athena Smart Security Guard Robot With Face Recognition
'You are who we say you are, Dr. Dakin,' Turner said.'

The FLUTE Project - A Huge Liquid Mirror In Space
'It's area, and its consequent light-gathering capacity, was many times greater than any rigid mirror...'

Robot Preachers Found To Undermine Religious Commitment
'Tell me your torments,' the Padre said, in an elderly voice marked with compassion.

CyberCab - Tesla Renames The Robotaxi
'A cybercab dogged their heels...'

SpaceHopper Microgravity Robot Lands On Its Feet
'...a slender-legged tripod surmounted by a spherical body no larger than a football.'

Brin's 1990 Novel Earth Still Full Of Predictions
'... making the point that their likenesses, every move they made, were being transmitted.'

'Whisper Mode' ala Blue Thunder Researched At Bristol
'Forest Lawn.'

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.