Tag Archives: breakthrough

Top 11 ‘Top 10’ Science & Tech Lists + Predictions from 2008 by Erik Larson


My picks for 2008: Top 11 People and lists reporting on and/or predicting breakthroughs in Science and Technology. You’ll notice I cheated a lot; but, I still left a LOT of stuff out: 

Continue reading

Advance brings low-cost, bright LED lighting closer to reality

Original, July 17, 2008 http://news.uns.purdue.edu/x/2008b/080717SandsLighting.html

 WEST LAFAYETTE, Ind. – Researchers at Purdue University have overcome a major obstacle in reducing the cost of “solid state lighting,” a technology that could cut electricity consumption by 10 percent if widely adopted.

The technology, called light-emitting diodes, or LEDs, is about four times more efficient than conventional incandescent lights and more environmentally friendly than compact fluorescent bulbs. The LEDs also are expected to be far longer lasting than conventional lighting, lasting perhaps as long as 15 years before burning out.

“The LED technology has the potential of replacing all incandescent and compact fluorescent bulbs, which would have dramatic energy and environmental ramifications,” said Timothy D. Sands, the Basil S. Turner Professor of Materials Engineering and Electrical and Computer Engineering.

The LED lights are about as efficient as compact fluorescent lights, which contain harmful mercury.

But LED lights now on the market are prohibitively expensive, in part because they are created on a substrate, or first layer, of sapphire. The Purdue researchers have solved this problem by developing a technique to create LEDs on low-cost, metal-coated silicon wafers, said Mark H. Oliver, a graduate student in materials engineering who is working with Sands.

Findings are detailed in a research paper appearing this month in the journal Applied Physics Letters, published by the American Institute of Physics.

Quantum Leap: Researchers have controlled the position of a single electron in a silicon circuit.

Original, July 17, 2008: http://www.technologyreview.com/Infotech/21086/?a=f

An international team of researchers has shown that it can control the quantum state of a single electron in a silicon transistor–even putting the electron in two places at once. Their discovery could help pave the way toward a practical quantum computer.

Quantum computers take advantage of the strange properties of subatomic particles to perform certain types of calculations much faster than classical computers can. Researchers are exploring a host of different approaches to quantum computing, and some have even built primitive quantum circuits that can perform calculations. But practical quantum computing would require the ability to manufacture devices with millions of quantum circuits–rather than the 12 or 16 achievable now–that can be integrated with more-conventional electronics.