Showing results 1 to 20 of 22

February 3, 2012 by

Clever on-off switch for graphene. Transistors next?

The Manchester University team that first isolated graphene has discovered a way of introducing a band gap into the material that makes it a much more promising candidate for building transistors.Graphene is famous for its astonishing list of useful characteristics – especially its conductivity.

December 8, 2011 by

IBM spins nanotubes, wire and graphene

IBM has revealed three new developments that aim to power tomorrow's digital technology. Based on nanotubes, nanowires and graphene, their common factor is compatibility with today's production techniques

June 20, 2011 by

Lasers could illuminate band gap for graphene

Graphene: famous for being a Nobel Prize prompting wonder material, and for having no band gap. The lack of band gap means graphene’s future as a possible replacement for silicon has always looked bleak, because a band gap is the property that allows a transistor to be switched on and off.

June 9, 2011 by

Transistors? Pah. IBM demos complete graphene circuit

IBM, having wowed us all in April with graphene transistors that run at 155GHz, has gone one step further and now reports success in building a high-speed, graphene-based circuit.The researchers, writing in the June 10 issue of Science, describe how they deposited multiple layers of graphene on a silicon wafer.

June 8, 2011 by

How to make graphene

Sellotape and sugar rub shoulders with high-temperature furnaces and low-pressure chambers in a rush to produce graphene, which aims to be the 21st century's successor to silicon

June 6, 2011 by

What is graphene?

Carbon is valuable as diamond and in oil, but a new form of the pure element may be even more important in our future. ZDNet UK presents the first in a series of features on graphene

April 10, 2011 by

IBM clocks graphene transistor at 155GHz

IBM has demonstrated a new super whizzy graphene transistor, clocking in at 155GHz, up from the 100GHz it benched last year.The breakthrough was made possible because the transistor was set on a substrate of "diamond-like carbon", itself layered on a commercial silicon wafer.

February 4, 2011 by

Fastest transistor yet boosts graphene's super-status

This week, IBM began something of a band-gap backlash against wunder material graphene. After the computer firm said graphene would never fully replace silicon, a group of scientists in Switzerland announced that there was another two dimensional industrial lubricant with more traditional semi-conductor properties – molybdenum - that could send silicon into retirement.

October 25, 2010 by

Researchers demo triple-mode graphene transistor

Researchers at Rice University and the University of California, Riverside have taken advantage of another quirk in graphene's arsenal, ambipolarity, to build and test a triple mode transistor, that could lead to yet smaller and cooler (not in the iPod sense) wireless devices.Conventionally, ability of a transistor to conduct either electrons (negative charge) or holes (positive charge) is fixed during fabrication.

September 7, 2010 by

UCLA touts 300GHz graphene transistors

We know graphene is the best thing since sliced gallium arsenide to hit the electronics industry, thanks to the speed with which it dispatches electrons across its famous chickenwire network of carbon atoms. But so far, making transistors from the stuff live up to the promise it holds has been problematic.


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