23 Jan '15, 4pm

Carbon Nanotube Transistors Go Head-to-Head With Silicon

Carbon Nanotube Transistors Go Head-to-Head With Silicon

Photo: Max Shulaker Layers Upon Layers: A carbon nanotube transistor, memory cells, and a silicon transistor are built on different layers of a monolithic integrated circuit. In 2013, a team at Stanford reported that it had arranged arrays of tiny, atom-thick cylinders to create an entirely new machine: the world’s very first carbon nanotube computer . With a clock speed of just 1 kilohertz and fewer than 200 transistors, it didn’t stand a chance of competing with today’s silicon-based processors. Now, the gap between silicon and carbon nanotubes is starting to narrow. In two papers, presented in December at the IEEE International Electron Devices Meeting in San Francisco, the same team has shown they can make carbon nanotube transistors with current densities and other properties that rival similarly sized silicon transistors. Graduate student Max Shulaker also reported t...

Full article: http://spectrum.ieee.org/semiconductors/materials/carbon-...

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