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Stanford Team Demonstrates Nanotube Chip

Stanford University researchers have demonstrated a computer chip consisting of carbon nanotube-based transistors. The team—led by professor Philip Wong—created the chip with semiconducting carbon nanotubes. The resulting device is highly conductive and can be significantly smaller than silicon-based devices, which is increasingly important as device sizes continue to shrink. However, growing nanotubes with semiconducting properties is challenging. Today, most methods create batches of nanotubes in which as many as 30 percent are metallic rather than semiconducting. To address this, the scientists grouped the nanotubes in a way that self-corrects errors, allowing the device to continue working despite flawed materials. Rather than explain this process, they built a chip for analog-to-digital conversion using the carbon nanotube circuit. The scientists next plan to determine whether their technology could scale enough for use as a CPU in conventional computers. They demonstrated their technology at the recent IEEE International Solid-State Circuits Conference in San Francisco.(PhysOrg)(Technology Review) 

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