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 ")

A New Way To Run Into Things
'He made an adjustment, pointed the tube at the wall beside Etzwane, and projected a cone of light.' - Jack Vance, 1971.

Unfurl The Future! Huawei Mate X versus Galaxy Fold
'A paper thin polycarbon screen unfurled silently from the top of the unit and immediately grew rigid.' - William Gibson, 1986.

North Focals Smart Glasses Provide Augmented Reality In Style
'The world ... is drenched in unfamiliar information all the way to the horizon.' - Charles Stross, 2007.

Do You Still Want A Folding Screen Phone?
'A paper thin polycarbon screen unfurled...' - William Gibson, 1986.

 

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

Zephyr Solar-Electric Stratospheric Drone
'The planes flew continuously, twenty-four hours a day...'

Robot Hummingbird Hovers Biomimetically
'With a buzz... it started out on its journey.'

Harvest Water From Air With Sunlight
'The atmosphere yielded its moisture with reluctance.'

Capitalist Big Brother Co-Opts Regular Big Brother
'It was even conceivable that they watched everybody all the time.'

A Floating Cosmodrome
'...a single perfectly level platform, which rose so high above the water that it was not splashed by the waves.'

First Artificial Memory Formed In Animals
'Is an extra-factual memory that convincing?' Quail asked.

Maintain Your Megastructure
Megastructures have repair robots, which have repair robots, ad infinitum.

Venezuelans Teaching Your Self-Driving Car
‘She wouldn't stop until Antar had told her everything he knew...’

Robothread Robotic Worms Crawling Through Your Brain
Perfect for clot-busting in the human brain. No Raquel Welch and no lasers, though.

Vantablack BMW X6 Is Douglas Adams Approved
'It's so... black!' said Ford Prefect.

Humanoid Robot's Muscles Biomimic Ours
'It is remarkable that the long leverages of their machines are in most cases actuated by a sort of sham musculature...'

Animatronic Robotic Baby Exposed
'The birth of Machine, my robot child...'

Beijing HaiDiLao Robotic Hotpot Restaurant Now Flavored By Artificial Intelligence
'Kantos Kan led me to one of these gorgeous eating places where we were served entirely by mechanical apparatus.'

Plants of the Future - What Should They Be Like
'He almost choked in his astonishment. Mashed potatoes and brown gravy!'

China Deploys Robot Traffic Police
'The robot came up smooth and fast as a rocket...'

Better Than Dune Chromoplastic? This Guy Might Have Done It
'But when Old Father Sun departs, the chromoplastic reverts to transparency in the dark.'

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.