Showing results 1 to 20 of 53

October 4, 2015 by

IBM claims breakthrough on carbon nanotubes

One of the leading candidates to replace silicon CMOS transistors is carbon nanotubes. But there are still lots of issues with both the basic materials and device structure. Now IBM says it has solved one of the big ones.

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.

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.

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.

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.

December 6, 2012 by

IEDM preview: Intel's 22nm mobile technology and more

Moore's Law won’t suddenly end, but it is slowing down. The question is: What's next? IEDM, which takes place next week in San Francisco, is devoted to answering that question making it a great place to get a peek at the technologies that could power tomorrow's laptops and smartphones.

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.

May 22, 2012 by

Samsung draws logic-worthy on/off ratio from graphene

Researchers at Samsung’s Advance Institute of Technology have developed a new transistor structure using everyone’s favourite two-dimensional material, Graphene.Despite its wonderful conductivity, electron mobility and so on that make it such an alluring prospect for chip designers bumping into the physical limits of silicon, it has no band gap.

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


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