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 OLED TV By Panasonic
It's the look of things to come.

Cicret Makes Your Skin Into A Display
'On the translucent mica-like coverings over the orifices, appeared reddish characters...' - Schachner and Zagat, 1931.

Organic Photonic Skin Display
'A strip of readout skin on my wrist...' - John Varley, 1992.

Samsung Patent For Smart Contact Lens Camera Granted
'He realized that it was not quite a clear lens.' - Vernor Vinge, 2001.

 

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.

 

 

 

 

 

Current News

Cattle Avoidance Feature In Indian Autonomous Cars
'The driver went about the business of gently slipping the teflon-coated metal scoop beneath the first animal...'

Project KOVR Fashion Protection From Infosphere
'... the entire shroudlike membrane took on whatever physical characteristics were projected at any nanosecond.'

Twist Bioscience High Density Digital Data On DNA
'They tied the memory to the bloodline and that was their record!'

'We're Not Creating A Terminator' Say Russians About Gun-Wielding Robot Fedor
Nobody is thinking about the Terminator. Westworld, maybe.

Vantablack Now IMMEASURABLY Black
'a black coating now thatís ninety-nine percent absorptive...'

Mercedes-Benz Autonomous Taxi Fleet In 3 Years
'... the taxi utilized sophisticated electronic sensors to perceive its surroundings.'

Is 'The Pulsar Positioning System' Evidence For SETI?
'For a hyperspace jump, you need at least four beacons for an accurate fix.'

Someday, You Might Like VR Enough To Move In
'That barrier was going to melt away someday soon. The transhumanists had promised...'

Humans Use Mental Power For Turtle Slavery
Now we need to start looking for animals with fingers...

Solar-Powered Moisture Vaporator
'The atmosphere yielded its moisture with reluctance.'

DxtER! Tricorder Prize Won By Final Frontier Medical Devices
We've been waiting a long time for this, Star Trek fans.

President Trump's Wall As Otra Nation Hyperloop
'...an hollow tube must be constructed the whole distance... as to admit a four wheeled carriage...'

Pickup Lines From Artificial Intelligences
'They hate us, you know... The humans. They'll stop at nothing.'

Pooper Scooper Drone Robot Watchdog 1
'Robots pick up the garbage and junk...'

Cassie Robot Brings AT-ST Walker To Life
There's even a log test!

Hundreds Of Robot Lawnmowers Invade Texas Town
'The mower reached the edge of the lawn, clucked to itself...'

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.