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[SB] Graphene may gain an ‘on-off switch’

post #1 of 6
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I don't know how IBM made their graphene transistor without a band gap, but this modeling of optical tech makes me happy!

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IBM 100GHz Graphene Transistor Thread

IBM Graphene Circuit Thread

Quote:
A team of researchers has proposed a way to turn the material graphene into a semiconductor, enabling it to control the flow of electrons with a laser “on-off switch”.
Quote:
Now, a team of researchers at the National University of Córdoba and CONICET in Argentina; the Institut Catala de Nanotecnologia in Barcelona, Spain; and RWTH Aachen University, Germany; suggest that illuminating graphene with a mid-infrared laser could be a key to switch off conduction, thereby improving the possibilities for novel optoelectronic devices.

In an article featured in Applied Physics Letters, the researchers report on the first atomistic simulations of electrical conduction through a micrometer-sized graphene sample illuminated by a laser field. Their simulations show that a laser in the mid-infrared can open an observable band gap in this otherwise gapless material.




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post #2 of 6
When will this take over silicon?
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post #3 of 6
Quote:
Originally Posted by IcyPimpHand View Post
When will this take over silicon?
I'd say hopefully within 10 years.

Just saw this.(Team reports scalable fabrication of self-aligned graphene transistors, circuits)
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post #4 of 6
finally the future from movies is coming
post #5 of 6
Nice, maybe some day I'll be working on this type of thing!
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post #6 of 6
Quote:
Originally Posted by IcyPimpHand View Post
When will this take over silicon?
Not soon enough.
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