Look Out, Silicon: This Computer Uses Carbon Nanotubes
Granted, it's simple and extremely slow compared to its silicon-based counterparts, but its existence marks a major step in the quest towards making ever faster and more efficient computers.
Kecia Lynn has worked as a technical writer, editor, software developer, arts administrator, summer camp director, and television host. A graduate of Case Western Reserve University and the Iowa Writers' Workshop, she is currently living in Iowa City and working on her first novel.
What's the Latest Development?
After months of careful work, starting with making individual transistors from carbon nanotubes and connecting them to create simple circuits, a team of Stanford researchers has succeeded in building an extremely slow but functional computer from 142 low-power carbon transistors. At one micron each, they are huge compared to their silicon counterparts, but together, given enough time, they can perform any computation. Currently, says team co-leader H.S. Philip Wong, "[i]t can run two programs concurrently, a counting program and a sorting program."
What's the Big Idea?
Although silicon transistors are decreasing in size every two years or so, allowing for faster, cheaper, and more powerful computers, experts predict that by 2020 they will reach a physical scaledown limit of five nanometers. Carbon nanotubes could either form their replacements or be used in hybrid chips that could keep silicon in the computing game a little longer. Due to the precision needed for semiconductor manufacturing, Stanford's discovery will require at least three more years of research before it hits the market.
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The ability to communicate effectively can make or break a person's assessment of your intelligence, competence, and authenticity.
The results come from a 15-year study that used ultrasound scans to track blood vessels in middle-aged adults starting in 2002.
- The study measured the stiffness of blood vessels in middle-aged patients over time.
- Stiff blood vessels can lead to the destruction of delicate blood vessels in the brain, which can contribute to cognitive decline.
- The scans could someday become a widely used tool to identify people at high risk of developing dementia and Alzheimer's.
What defines a dark horse? The all-important decision to pursue fulfillment and excellence.
When we first set the Dark Horse Project in motion, fulfillment was the last thing on our minds. We were hoping to uncover specific and possibly idiosyncratic study methods, learning techniques, and rehearsal regimes that dark horses used to attain excellence. Our training made us resistant to ambiguous variables that were difficult to quantify, and personal fulfillment seemed downright foggy. But our training also taught us never to ignore the evidence, no matter how much it violated our expectations.
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