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Graphene-based gadgets may be just years away
Date:4/30/2008

Researchers at The University of Manchester have produced tiny liquid crystal devices with electrodes made from graphene an exciting development that could lead to computer and TV displays based on this technology.

Writing in the American Chemical Societys journal Nano Letters, Dr Kostya Novoselov and colleagues from The School of Physics and Astronomy and The School of Computer Science, report on the use of graphene as a transparent conductive coating for electro-optical devices and show that its high transparency and low resistivity make it ideal for electrodes in liquid crystal devices.

Graphene was discovered at The University of Manchester back in 2004, by Professor Andre Geim FRS and Royal Society Research Fellow Dr Kostya Novoselov. This incredible one-atom-thick gauze of carbon atoms, which resembles chicken wire, has quickly become one of the hottest topics in physics and materials science.

Graphene is only one atom thick, optically transparent, chemically inert, and an excellent conductor, says Dr Novoselov, from the Manchester research team.

These properties seem to make this material an excellent candidate for applications in various electro-optical devices that require conducting but transparent thin films. We believe graphene should improve the durability and simplify the technology of potential electronic devices that interact with light.

Prof Geim said: Transparent conducting films are an essential part of many gadgets including common liquid crystal displays (LCDs) for computers, TVs and mobile phones.

The underlying technology uses thin metal-oxide films based on indium. But indium is becoming an increasingly expensive commodity and, moreover, its supply is expected to be exhausted within just 10 years.

Forget about oil our civilisation will first run out of indium. Scientists have an urgent task on their hands to find new types of conductive transparent films.

The Manc
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Contact: Alex Waddington
01-612-758-387
University of Manchester
Source:Eurekalert

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