ScienceDaily Technology Headlines
for Sunday, February 7, 2010
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Scientists demonstrate world's fastest graphene transistor; holds promise for improving performance of transistors (February 7, 2010) -- IBM researchers have demonstrated a radio-frequency graphene transistor with the highest cut-off frequency achieved so far for any graphene device -- 100 billion cycles/second (100 GigaHertz). The high frequency record was achieved using wafer-scale, epitaxially grown graphene using processing technology compatible to that used in advanced silicon device fabrication. ... > full story
Sunny Record: Breakthrough for Hybrid Solar Cells (February 7, 2010) -- Scientists in Germany have succeeded in developing a method for treating the surface of nanoparticles which greatly improves the efficiency of organic solar cells. The researchers were able to attain an efficiency of 2 percent by using so-called quantum dots composed of cadmium selenide. These measurements, well above the previous efficiency ratings of 1 to 1.8 percent, were confirmed. ... > full story
Toward safer plastics that lock in potentially harmful plasticizers (February 6, 2010) -- Scientists have published the first report on a new way of preventing potentially harmful plasticizers -- the source of long-standing human health concerns -- from migrating from one of the most widely used groups of plastics. ... > full story
Quantum computing leap forward: altering a lone electron without disturbing its neighbors (February 6, 2010) -- A major hurdle in the ambitious quest to design and construct a radically new kind of quantum computer has been finding a way to manipulate the single electrons that very likely will constitute the new machines' processing components or "qubits." Now, a physicist has discovered how to do just that -- demonstrating a method that alters the properties of a lone electron without disturbing the trillions of electrons in its immediate surroundings. The feat is essential to the development of future varieties of superfast computers with near-limitless capacities for data. ... > full story
Leaves whisper their properties through ultrasound (February 6, 2010) -- The water content of leaves, their thickness, their density and other properties can now be determined without even having to touch them. Researchers in Spain have presented an innovative technique that enables plant leaves to be studied using ultrasound in a quick, simple and noninvasive fashion. ... > full story
Sweet! Sugar plays key role in cell division (February 6, 2010) -- Using an elaborate sleuthing system they developed to probe how cells manage their own division, scientists have discovered that common but hard-to-see sugar switches are partly in control. ... > full story
Where did today's spiral galaxies come from? (February 6, 2010) -- Using data from the NASA/ESA Hubble Space Telescope, astronomers have created a demographic census of galaxy types and shapes from a time before the Earth and the sun existed, to the present day. The results show that more than half of the present-day spiral galaxies had peculiar shapes only six billion years ago, which, if confirmed, highlights the importance of collisions and mergers in the recent past of many galaxies. It also provides clues for the unique status of our own galaxy. ... > full story
Craters young and old in southern highlands of Mars (February 6, 2010) -- The Mars Express High Resolution Stereo Camera has imaged craters both young and old in a new view of the southern highlands of Mars. ... > full story
Super material will make lighting cheaper and fully recyclable (February 6, 2010) -- With the use of the new super material graphene, Swedish and American researchers have succeeded in producing a new type of lighting component. It is inexpensive to produce and can be fully recycled. ... > full story
New system provides hybrid electric autos with power to spare (February 5, 2010) -- An advancement in hybrid electric vehicle technology is providing powerful benefits beyond transportation. ... > full story
'Artificial pancreas' a step nearer for children with type 1 diabetes (February 5, 2010) -- Scientists have made a significant step towards developing a so-called "artificial pancreas" system for managing type 1 diabetes in children. The team has developed and successfully tested a new algorithm, providing a stepping stone to home testing for the artificial pancreas. ... > full story
Madly mapping the universe (February 5, 2010) -- It takes special software to map the universe from noisy data. Scientists have developed a code called MADmap to do just that for the cosmic microwave background, then posted it on the web for other interested sky mappers. Scientists probing the sky with the PACS instrument aboard the Herschel satellite have adapted MADmap to make spectacular images of the infrared universe. ... > full story
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