Graphene Transistors.

[KA5PIU]

Hello.

The fastest processor chip does not run at a mere few GHz.
No, the new kid on the block runs at 100GHz.
http://www.pcworld.com/article/188656/ibm_details_worlds_fastest_graphene_transistor.htm l

[PA5COR]

Try reading the whole article.

[KA5PIU]

Try reading the whole article.

Hello.

I did read the whole article.
So far this is an analog device that runs 100+GHz.
Moore's law is still valid as computing power is still doubling every 18 months.
Right now the solution is to run more effective cores in multiples as the upper end of the frequency is being reached, the traces are now starting to become antennas.
However the proof of concept is what I am looking at.
We have hot transistors now.
http://www.cosmosmagazine.com/news/1710/hot-chip-endures-extreme-temperatures
So, what is the point?
I have a laser element that is intended to operate at up to 190 degree F.
I now understand that if I provide the heat sinking needed to keep it under 155 degree F, I can run it at around 4 watts real world figures pulsed CW.
I loo0k at the extreme in the lab and all but expect a simplified product down the road.
So, a 100GHz opamp today, killer RF section for a radio 18 months from now.
Can you just imagine a 100GHz WiFi device? perhaps not much range but the bandwidth could be massive.
100GHz illuminator for fiber optics? instant billion X gain in bandwidth over what we have now, if not more.

[PA5COR]

Those transistors won't switch i.e. have no on/off state.

One major roadblock is that graphene does not work easily with discrete electronic signals, he explained. Because graphene is a zero bandgap semiconductor, meaning there is no energy difference between its conductive and nonconductive states, transistors made of the semiconductor cannot be turned on and off.
Little bit of a problem for a processing core...

Why do we need that bandwidth? i have 20 Mb connection, and we all 3 caan do multiple downloads without straining the connection.
For use in consumer products we are looking at 10 - 15 years before it will be available.

Military use comes first before it will be available in cheap real life productions in consumer products.

[N4VGB]

Why do we need that bandwidth? i have 20 Mb connection,<snip>

Same here, 30 meg raw speed and that gives me a little more than 20meg actual throughput.

But the same provider does offer 100meg and 1gig also.

[NQ6U]

Rudy:


Lin cautioned against thinking of graphene as a substitute for the silicon-based microprocessors used in today's computers, at least at anytime in the near future. One major roadblock is that graphene does not work easily with discrete electronic signals, he explained. Because graphene is a zero bandgap semiconductor, meaning there is no energy difference between its conductive and nonconductive states, transistors made of the semiconductor cannot be turned on and off. In contrast, silicon has a bandgap of one electron volt, making it good for processing discrete digital signals, Lin said.

Instead, graphene is better suited for making analog transistors, such as signal processors and amplifiers. Today, such circuitry is largely made from GaAs (gallium arsenide), though GaAs offers nowhere near the same electron mobility, Lin said.

So we may be using them in our rigs before we see them in our computers

[PA5COR]

We can have the 100 Mb connection, my m8 has it for his own business, but i don't see the need.
for 30 euro's a month no caps, we never see a problem here, our son is always watching movies the wife plays online games, and i'm on boards.
Looking at the connection, we just use 10% average here of it....

[KA5PIU]

Rudy:



So we may be using them in our rigs before we see them in our computers

Hello.

Yes, and that is my point.
100GHz is a whole lot faster than we have been able to come up with so far for something this complex.
Remember that this is a complete circuit with far greater electron mobility, meaning an IC could be produced that is nearly the complete radio operating at 100 GHz.
And, n

[WØTKX]

No, it means small and efficient RF power devices. Not the processor guts. And likely esoteric audio breakthroughs past the point of the price/performance "knee". Sheesh, Cheech. Because it has no discrete on off state, using it for computational speed wars is inappropriate.

But a Graphene Powered SupaBowl shootout, gone mobile in custom 70's family station wagons hot rods...
You need to snatch up the Taco concession for that event. Perhaps a Sauerkraut Taco?

Cortido? Curtido? YUMMY! Eh? Hello?

http://www.healthygreenkitchen.com/wp-content/uploads/2010/08/cortido550.jpg

[NQ6U]

Hello.

Yes, and that is my point.
100GHz is a whole lot faster than we have been able to come up with so far for something this complex.
Remember that this is a complete circuit with far greater electron mobility, meaning an IC could be produced that is nearly the complete radio operating at 100 GHz.
And, n

Way to try and weasel out of that, Rudy! Admit it--you didn't have the slightest idea of what you were talking about but you posted anyway.

[KA5PIU]

Hello.

I can also mean small and efficient Analog voice vocoders.
Remember, digital in not the only way to go.
Although now obsolete, Bell used both analog vocoders and echo suppressors with undersea cables.
In fact, it was the bell system that pushed digital, in part to "sell" digital telephone switches.
Telephone switches have always been digital, but base 12 and electromechanical.
http://en.wikipedia.org/wiki/Electromechanics
And, yes, base 12.
On a Strowger swich there were 12 positions on the 2 positions of the selectors.
The first 10 were your line positions, but if your desired line position was busy the switch would kick it "over the top" and drop that selector out.
Another selector would drop in and "hunt" for an open circuit.
In this manner your call might be routed through several offices even though you are only one office away from completing your call, an early form of logic.
The 12th position was used for call accounting and service.
When you hung up a relay would trip and send the selectors to the final position at what point a tone would be put on the connections to create the needed audit trail, a punched paper roll.
Both the 11th and 12th position were were set up as relays and not actual wiper positions.
But, the logic to make this happen in an era when it was all mechanical with a bunch of electromagnets?

[NQ6U]

http://www.the-piedpiper.co.uk/graphics1/weasel1.jpg

Weasel is weaseling.

(ON EDIT: Looking at the photo more closely, I do believe that's a stuffed weasel. It was unintentional, but might actually be quite appropriate.)

[NA4BH]

http://www.youtube.com/watch?v=sfYoNPJcN30

[WØTKX]

http://www.youtube.com/watch?v=PnqK-1CPxLk


http://www.youtube.com/watch?v=PnqK-1CPxLk

[n2ize]

Rudy:



So we may be using them in our rigs before we see them in our computers

Or in building op amps for analogue computers.

[NQ6U]

WART

[KG4CGC]

original G
WART

[VE7DCW]

WART goes up....must come down!