2014 IBM Expects Nanotube Transistor Computer Chips Ready Soon After 2020
<p>Jul 06, 2014 11:13 AM</p>
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Intel latest is 14 nm xsistor;</p>
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IBM wants CNTs soon after 2020.</p>
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silicon runs out of steam at 5 nm, hen nothing but NTs says Wilfried Haensch;</p>
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1998 first CNT xsistor; now IBM commits to commercialize.</p>
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ITRS report says 5nm node due in 2019.</p>
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IBM recently built chips with 10K NT xsistor per chip.</p>
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have done sim of chip with billions.</p>
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microprocessor should be 5X as fast with same power.</p>
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IBM design: 6 NTs in parallel makes one xsistor.</p>
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each NT is 1.4 nm wide and 30 nm long and spaced 8 nm apart.</p>
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30 nm = 10 nm on electrodes at each end and 10 nm in middle;</p>
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A third trode runs underneath tubes to switch them on/ off.</p>
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use compounds to position them then strip them away.</p>
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use chemical filters to get right size of rubes. use charge to separate semiconducting ones.</p>
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Stanford created simple NT computer... how to speed it up.</p>
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Hannon says if not ready by 2020 window could close.</p>
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Silicon-based spintronics main other candidate.</p>
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