Light-Trapping Nanodoughnut Like Slow Glass

Warwickshire physicists have stored exitons in a nanoscale Aharonov-Bohm ring using a combination of magnetic and electric fields. The exiton holds onto its photon, effectively freezing it in place.

Andrea Fischer and Rudolf A. Roemer believe that this accomplishment has significant implications for light-based computing. This is the first time that a photon has been "locked down" for later release.

SF fans remember Bob Shaw's classic 1968 story Light of Other Days, in which he describes a manufactured product with the capacity to trap light and then slowly let it out - slow glass.

A new piece was always jet black because nothing had yet come through, but one could stand the glass beside, say, a woodland lake until the scene emerged, perhaps a year later. If the glass was then removed and installed in a dismal city flat, the flat would—for that year—appear to overlook the woodland lake.,,
(Read more about slow glass)

Update 25-Mar-2012: SF great L. sprague de Camp presented a similar idea in his whimsical 1940 story The Exhalted; see the reference to slow glass rod. End update.

I know you'll want to slowly release information trapped in these related stories:

  - Slow Light Will Speed Communications
  - Light Captured In A Crystal
  - Slow Light 'Scenedow' Close At Hand
  - eBayaday Sells A View On eBay

Read more about this complex development in this artlessly casual article in The Register - Boffins build 'slow glass' light-trapping nanodoughnut or go straight to Exciton Storage in a Nanoscale Aharonov-Bohm Ring with Electric Field Tuning (pdf) in which the authors Andrea M. Fischer, Vivaldo L. Campo Jr., Mikhail E. Portno and Rudolf A. Romer "study analytically the optical properties of a simple model for an electron-hole pair on a ring subjected to perpendicular magnetic flux and in-plane electric field, show how to tune this excitonic system from optically active to optically dark as a function of these external fields and offer a simple mechanism for exciton storage and readout." Thanks to Winchell Chung for the tip on this story.

Scroll down for more stories in the same category. (Story submitted 3/10/2009)

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 - (" Engineering ")

Phil Nuyttnn's City Under The Sea
''Under the lower roof there was no water, but a clear and luminous atmosphere...' - Andre Laurie, 1895.

Stick-On Tape Speakers, As Predicted By Bruce Sterling
Flexible tape speakers, someday.

Has Climate Change Already Been Solved By Aliens?
'I had explained," said Nessus, "that our civilisation was dying in its own waste heat.' - Larry Niven, 1970.

Skin Electronics 3D Printed
'June's body is a tracery of lambent lines, like some arcane capillary circuitry...' - Paul Di Filippo, 1985

 

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

Soon, Your Tesla Will Follow You Like A Pet
'... follow him as faithfully as a well-trained hound.'

Chinese Watrix Gait Recognition Watching You Always
'... those pesky gait-recognition cameras.'

FlexPai Foldable Phone By Royole
'...A paper thin polycarbon screen unfurled.'

Oh Yes, We're Building The Rotating Tower In Dubai
'Give me an old-fashioned tetragon on a central pivot every time.'

Bioreactor Helps Legless Frogs Get Their Jump Back
'An alien drug... Used by an insect race... It can repair bones and organs. It can grow new tissue."

Xinhua AI Anchor Puts CGI Face To Automated News
'...a congeries of software agents.'

Wirewax Watching You Watch, Adjusting Your Experience
'He adjusted the n, the r and b knobs, and hopefully anticipated a turn for the better...'

LawGeex AI Beats 20 Top Lawyers
'The Law Society has strict rules on the use of pseudo-intelligent software - terrified of putting... its members out of work.'

ROAM Robotics Skiing Exoskeleton
'The real genius in the design is that you don't have to control the suit; you just wear it...'

MIT Headset Lets You Communicate Without Speaking
'The subvocal read nerve signals, letting her enter words by just beginning to will them...'

Exploring Oceans Across The Solar System
'Black liquid flashed past the turbot’s infrared eyes.'

SWEEPER Robot Peter Piper Picking Peppers
'... little machines, that went from plant to plant, apparently on caterpillar tracks, cutting off the ripe fruit.'

Oil from Algae - Can It Be Done?
'We dump everything that's waste into the tanks, pump the oil off the top.'

Moving Whole Planets, Revisited
There was a lot of work done on this idea over the years.

Disney Keeps Backups Of Star Wars Franchise Actors
'She is a personality-construct, a congeries of software agents...'

Farming In Space Starts With Mycorrhiza
'The inner leaves were beginning to curl faster than the outer leaves.'

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.