Stanford EE graduate student Max Schulaker holds a silicon wafer on which have been grown a number of CNT-based computer chips (Photo: Norbert von der Groben/Stanford)
A cartoon of how the Stanford group removes and/or deals with rogue CMTs that would otherwise ruin a desired circuit (Image: Max Schulaker/Stanford)
A CNT device (Image: Popproject3 )
In a technological tour de force, researchers at Stanford University have constructed a one-bit, one-instruction programmable computer on a chip using carbon nanotube-based electronics for all logic elements. Containing 178 carbon nanotube field-effect transistors, the computer is only able to carry out only one instruction, called SUBNEG. However, SUBNEG is Turing-complete, allowing the computer to run, albeit with an extraordinary level of inefficiency, any program, given enough memory, time, and programming ingenuity.
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