TechAndComputer (Nov. 6, 2012) To build the computer chips of the future, designers will need to understand how an electrical charge behaves when it is confined to metal wires only a few atom-widths in diameter.
Now, a team of physicists at McGill University, in collaboration with researchers at General Motors R&D, have shown that electrical current may be drastically reduced when wires from two dissimilar metals meet. The surprisingly sharp reduction in current reveals a significant challenge that could shape material choices and device design in the emerging field of nanoelectronics.
The size of features in electronic circuits is shrinking every year, thanks to the aggressive miniaturization prescribed by...
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Challenge facing designers of future computer chips: Surprising findings could influence material choices in nanoelectronics
- 06 November 2012
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New computational method for timing the tree of life
- 06 November 2012
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TechAndComputer (Nov. 6, 2012) With its deeply embedded roots, sturdy trunk and dense profusion of branches, the Tree of Life is a structure of nearly unfathomable complexity and beauty. While major strides have been made to establish the evolutionary hierarchy encompassing every living species, the project is still in its infancy.
At Arizona State University's Biodesign Institute, Sudhir Kumar has been filling in the Tree of Life by developing sophisticated methods and...
At Arizona State University's Biodesign Institute, Sudhir Kumar has been filling in the Tree of Life by developing sophisticated methods and...
Computers 'taught' to ID regulating gene sequences
- 05 November 2012
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The glowing areas in this zebrafish embryo show the activity of one of the brain enhancer sequences identified. The enhancer is directing the activity of a gene in the lower areas of the central nervous system and in the lens of the eye. (Credit: G. Burzynski)
TechAndComputer (Nov. 5, 2012) Johns Hopkins researchers have succeeded in teaching computers how to identify commonalities in DNA sequences known to regulate gene activity, and to then use those...
TechAndComputer (Nov. 5, 2012) Johns Hopkins researchers have succeeded in teaching computers how to identify commonalities in DNA sequences known to regulate gene activity, and to then use those...
'Attack navigator' protects against weak spots in security
- 05 November 2012
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TechAndComputer (Nov. 5, 2012) Everyone is familiar with the yellow 'Post-it' memos, showing login details, that are often found stuck to computer monitors. The same goes for USB sticks found in car parks. However, few grasp the real impact of such actions on an organization's business or brand. Both may eventually lead to data theft, not as a result of any technical failure, but as a result of the vagaries of human behaviour. The TREsPASS project's `attack navigator' combines...
Cancer bound: How some carcinogens evade removal by stabilizing the very DNA they attack
- 02 November 2012
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Models showing the steric hinderance between different lesions (colored yellow and turquoise)and DNA. Steric hinderance causes double helix destabilization and refers to the degree of crowding between different atoms. (Credit: New York University)
TechAndComputer (Nov. 2, 2012) A person doesn't have to go far to find a polycyclic aromatic hydrocarbon (PAH). These carcinogen precursors are inhaled through automobiles exhaust during the morning commute, are present...
TechAndComputer (Nov. 2, 2012) A person doesn't have to go far to find a polycyclic aromatic hydrocarbon (PAH). These carcinogen precursors are inhaled through automobiles exhaust during the morning commute, are present...