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Yahoo! My Yahoo! Mail More Yahoo! Services Account Options New User? Sign Up Sign In Help Yahoo! Search web search Home Singapore Asia Pacific World Business Entertainment Sports Technology Japanese team discovers 'super disc' material AFP - Tuesday, May 25 Send IM Story Print Blu-ray discs are seen next to HD DVDs on a shelf at a Best Buy store in San Francisco. 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 has said. TOKYO (AFP) - – 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. Recommend Send IM Story Print Related Articles US-TECH Summary Reuters - 52 minutes ago Facebook 'missed the mark' on privacy: founder AFP - 1 hour 6 minutes ago Nokia and Yahoo in web services deal Reuters - 1 hour 35 minutes ago Samsung, Sony chiefs may discuss 3D TV deals, LCD supplies Reuters - Tuesday, May 25 Japanese team discovers 'super disc' material AFP - Tuesday, May 25 News Search Top Stories New British government takes axe to spending Husband of late actress Brittany Murphy found dead Rescue of Spain bank 'could cost' 2.7 bln euros BA Heathrow cabin crew strike takes off Spanish PM vows to stay firm on cuts despite strike threat More Top Stories » ADVERTISEMENT Most Popular Most Viewed Most Recommended Husband of late actress Brittany Murphy found dead BA Heathrow cabin crew strike takes off Tourists take walk on wild side with LA gang tour Anger mounts as oil blackens Louisiana marshes, beaches New British government takes axe to spending More Most Viewed » Scientists stunned as grey whale sighted off Israel Lack of sleep linked to early death: study UN fears 'irreversible' damage to natural environment Earth may be too hot for humans by 2300: study Ocean fish could disappear in 40 years: UN More Most Recommended » Elsewhere on Yahoo! Financial news on Yahoo! Finance Stars and latest movies Best travel destinations More on Yahoo! News Home Singapore Asia Pacific World Business Entertainment Sports Technology Subscribe to our news feeds Top StoriesMy Yahoo!RSS » More news feeds | What are news feeds? Also on Yahoo Answers Groups Mail Messenger Mobile Travel Finance Movies Sports Games » All Yahoo! Services Site Highlights Singapore Full Coverage Most Popular Asia Entertainment Photos World Cup 2010 Copyright © 2010 Yahoo! Southeast Asia Pte. Ltd. (Co. Reg. No. 199700735D). All Rights Reserved. Terms of Service | Privacy Policy | Community | Intellectual Property Rights Policy | Help

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