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

 

Holographic Videoconferencing

Holographic videoconferencing has been achieved using a new large size material that can be repeatedly written to and erased.


(Holographic Videoconferencing)

The University of Arizona researchers developed a new polymer-based material that encodes information using electric fields. The material contains two components. When light strikes the film, one of these components, a polymer, absorbs photons and generates electrons and their positive counterparts, called holes. The polymer is also a good conductor of holes, but not of electrons. As a result, the holes can easily move away from the illuminated areas where they were generated, whereas the electrons stay put. This separation of charges creates patterns of tiny electric fields within the material. These electric fields change the way that light moves through the different parts of the film.

The second component of the material, a dye, responds to the electric fields in two ways. The dye molecules change their polarization and physically rotate depending on the nature of the fields in each part of the film. These changes locally affect the index of refraction, which has to do with how a material bends and reflects light. When the researchers shine a laser through the film, the dye alters the path of the light, projecting a pattern that the eye interprets as a three-dimensional image. "It comes out of thin air--you feel like you could touch it," says Nasser Peyghambarian, a professor of materials science and engineering at the University of Arizona, who led the work.

To erase the image, the researchers expose the film to uniform light, which redistributes the electrons and holes, removing the electric fields and the changes in the material that they had produced.

Jan Tor, Captain of Interplanetary Patrol Cruiser 79388 in Edmond Hamilton's 1928 novel Crashing Suns, had holographic videoconferencing (he called it a telestereo):

Abruptly I was aroused from my musings by the sharp ringing of a bell at my elbow. "The telestereo," I said to Hal Kur. "Take the controls."

As he did so I stepped over to the telestereo's glass disk, inset in the room's floor, and touched a switch beside it. Instantly there appeared standing upon the disk, the image of a man in the blue and white robe of the Supreme Council, a lifesize and moving and stereoscopically perfect image, flashed across the void of space to my apparatus by means of etheric vibrations. Through the medium of that projected image the man himself could see and hear me as well as I could see and hear him, and at once he spoke directly to me.

Via Technology Review; thanks to Fortigurn for writing in with the tip on this story.

Scroll down for more stories in the same category. (Story submitted 11/7/2010)

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 - (" Display ")

Transparent MicroLED Screen From Samsung
Has Samsung nailed the Look of Things To Come?

Augmented Reality Book Covers Reveal The Inner Book
'The E-paper holograms leaped from lurid covers...' - Greg Bear, 2003.

TCL CSOT 17-Inch Printed OLED Scrolling Display
'..a wide sheet of clear material suddenly flared with light and swirling colour.' - EC Tubb, 1958.

Looking Glass Display Good Enough For Science Fiction, Fantasy
'The figure seemed to be swimming toward the surface.' - Roger Zelazny, 1981.

 

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

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.'

Gaia - Why Stop With Just The Earth?
'But the stars are only atoms in larger space, and in that larger space the star-atoms could combine to form living matter, thinking matter, couldn't they?'

Microsoft VASA-1 Creates Personal Video From A Photo
'...to build up a video picture would require, say, ten million decisions every second. Mike, you're so fast I can't even think about it. But you aren't that fast.'

Splendid View Of Eclipse From Orbit Visualized And Repurposed By Arthur C. Clarke
'The area affected was five hundred kilometres across, and perfectly circular.'

Bespoke Environment Music From AIs
'Call 'em Winter Mute," said the other, making it two words.'

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.