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Triple-mode graphene transistors go analog

10/15/2010 05:02 AM EDT
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Sparky_Watt
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re: Triple-mode graphene transistors go analog
Sparky_Watt   10/18/2010 9:08:35 PM
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It is called ambipolar because it changes its behavior. It acts like a p-channel FET when the gate is at one polarity and an n-channel FET when the gate is at the other. So, it wanders ("ambi", think "amble" or like "ambidextrous") between polarities. What I am curious about is whether there is a dead band between polarities and is that controllable. I would also like to see a couple of simplified schematics using the device.

sharps_eng
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re: Triple-mode graphene transistors go analog
sharps_eng   10/16/2010 6:31:54 PM
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Life could become really interesting; does ambipolar therefore not need a substrate bias to prevent latchup? Could we discard our old 'nominal 0V' substrate and run everything in true differential? Every signal could have a mirror in the opposite polarity, giving potential for low crosstalk and low supply voltages/signal swings... could also make it easier to recycle charge locally instead of burning it in resistive losses.

double-o-nothing
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re: Triple-mode graphene transistors go analog
double-o-nothing   10/16/2010 9:19:17 AM
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It's probably called ambipolar to avoid confusion with bipolar as in BJT's, I guess(?)

pixies
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re: Triple-mode graphene transistors go analog
pixies   10/15/2010 9:36:22 PM
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Should it be called "bipolar" instead of "ambipolar"?

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