Subscribe to our free daily newsletters
  Space Industry and Business News  




Subscribe to our free daily newsletters



TECH SPACE
Japanese team finds material that could make super disc

by Staff Writers
Tokyo (AFP) May 24, 2010
A Japanese research team has found a material that could be used to make a low-price super disc with data storage capacity thousands of times greater than a DVD, the lead scientist said Monday.

The material transforms from a black-colour metal state that conducts electricity into a brown semiconductor when hit by light, according to Shin-ichi Ohkoshi, chemistry professor at the University of Tokyo.

The material, a new crystal form of titanium oxide, can switch back and forth between the metal and semiconductor states at room temperature when exposed to light, creating an effective on-off function for data storage.

It is "promising as a material for a next-generation optical storage device," Ohkoshi told AFP by telephone.

A material that changes colour with light can be used in storage devices as colours reflect light differently to contain different information.

His team has succeeded in creating the material in particles measuring five-to-20 nanometres (a five-billionth to 20-billionth of a metre) in diameter.

If the smallest particle is used, the new disc could hold more than 1,000 times as much information as a Blu-ray disc, provided that matching data-writing and reading equipment are developed.

A single-layer Blu-ray disc can hold five times as much data as a conventional DVD.

Titanium oxide's market price is about one-hundredth of the rare element -- germanium-antimony-tellurium -- that is currently used in rewritable Blu-ray discs and DVDs, Ohkoshi said.

"You don't have to worry about procuring rare metals. Titanium oxide is cheap and safe, already being used in many products ranging from face powder to white paint," the professor said.

Ohkoshi said it was not known when a disc with the material would be manufactured and put to practical use, adding that he would start talks with private-sector companies for commercialisation.

The study was published in the advance online edition of the British magazine Nature Chemistry.



Share This Article With Planet Earth
del.icio.usdel.icio.us DiggDigg RedditReddit
YahooMyWebYahooMyWeb GoogleGoogle FacebookFacebook



Related Links
Space Technology News - Applications and Research



Memory Foam Mattress Review
Newsletters :: SpaceDaily :: SpaceWar :: TerraDaily :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News


TECH SPACE
Computer pioneer Max Palevsky dead at 85
Beverly Hills, Calif. (UPI) May 7, 2010
Computer pioneer Max Palevsky, a founder of Intel, died in Beverly Hills, Calif., at the age of 85, his assistant said. Palevsky died Wednesday of heart failure at home, Angela Kaye said. Palevsky used his fortune from computers to support Democratic presidential candidates and to amass an important collection of American Arts and Crafts furniture, which he donated to the Los Ang ... read more







The content herein, unless otherwise known to be public domain, are Copyright 1995-2010 - SpaceDaily. AFP and UPI Wire Stories are copyright Agence France-Presse and United Press International. ESA Portal Reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement,agreement or approval of any opinions, statements or information provided by SpaceDaily on any Web page published or hosted by SpaceDaily. Privacy Statement