Quantum Dots made brighter by a 108 to 550 times factor

By placing quantum dots on a specially designed photonic crystal, researchers at the University of Illinois have demonstrated enhanced fluorescence intensity by a factor of up to 108. Potential applications include high-brightness light-emitting diodes, optical switches and personalized, high-sensitivity biosensors. A quantum dot is a tiny piece of semiconductor material 2 to 10 nanometers in …

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Boron nanotubes provide radiation shielding and more

Boron nanotubes can provide strong, light weight, cost effective radiation shielding for space and fusion reactors Compared to CNTs, boron nanotubes have some better properties such as high chemical stability, high resistance to oxidation at high temperatures and are a stable wide band-gap semiconductor. Because of these properties, they can be used for applications at …

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Ex-China drug regulator to be executed

China’s former top drug regulator was sentenced to death Tuesday for taking bribes to approve untested medicines, as the country’s main quality control agency announced its first recall system targeting unsafe food products. Clearly this shows that China is serious about cleaning up corruption and food and drug quality. It may shrink the pool of …

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Projecting future wealth

2006 2005 2004 Wealth Amount 5 3 2 US$30B+ Forbes list (which mainly catches owners 67 49 32 US$10B+ of public assets, can underestimate some 167 124 102 US$5B+ like CTO of Cisco, who may be billionaire 946 793 691 US$1B+ from cisco stock + large startup positions) 10000 8200 7500 US$160M+ (my own estimate) …

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Climate reengineering

The new age of climate re-engineering and the $25 million bounty from Richard Branson is discussed at open the future. It is noted that the re-engineering efforts would have the best chance of succeeding if we adjust technology and behavior to stop making the problems worse. Gregory Benford’s proposal for climate re-engineering is discussed at …

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Singapore’s 1 million S$ Urban warfare robot challenge

A contest to build a robot that can operate autonomously in urban warfare conditions, moving in and out of buildings to search and destroy targets like a human soldier, was launched in Singapore on Tuesday. Defence Science and Technology Agency (DSTA) is offering one million Singapore dollars ($652,000) to whoever develops a robot that completes …

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Small fuel cells made more efficient and lower cost

Fuel cells have been made efficient for small machines like lawnmowers. Many standard fuel cell designs use electronics to control power output, but such designs require complex systems to manage humidity and fuel recovery and recycling systems to achieve acceptable efficiency. The new process controls the hydrogen feed to match the required power output, just …

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