30 July 2012

Researchers ‘cut the graphene cake’

Researchers have demonstrated that wonder material graphene can be used as a building block to create 3d crystal structures which are not confined by what nature can produce.

The team at the University of Manchester says that sandwiching individual graphene sheets between insulating layers could open up an entirely new dimension of research.

The scientists showed that a new side view imaging technique can be used to visualise the individual atomic layers of graphene within the devices they built. They found that the structures were almost perfect even when more than 10 different layers were used to build the stack.

This result indicates that the latest techniques of isolating graphene could be a big step forward for engineering at the atomic level as well as giving more weight to graphene's suitability for next gen computer chips.

The side view imaging approach works by extracting a thin slice from the centre of the device. The researchers used a beam of ions to cut into the surface of the graphene and dig a trench on either side of the section they wanted to isolate.

"The difference is that our slices are only around 100 atoms thick and this allows us to visualise the individual atomic layers of graphene in projection," commented Dr Sarah Haigh at the University of Manchester's school of materials. "We have found that the observed roughness of the graphene is correlated with their conductivity."

The researchers also observed that the layers were perfectly clean and that any debris left over from production segregated into isolated pockets and did not affect device performance.

The University of Manchester is currently building a National Graphene Institute in a bid to lead the way in graphene research.

Simon Fogg

Supporting Information


This material is protected by Findlay Media copyright
See Terms and Conditions.
One-off usage is permitted but bulk copying is not.
For multiple copies contact the sales team.

Do you have any comments about this article?

Add your comments


Your comments/feedback may be edited prior to publishing. Not all entries will be published.
Please view our Terms and Conditions before leaving a comment.

Related Articles

Amp works at 50% efficiency

Researchers from the Universities of Bristol and Cardiff have created an ...

Materials breakthrough

A technique to study the interface between materials, developed at the National ...

Quantum logic gate created

Professor Gerhard Rempe, director of the Max Planck Institute of Quantum ...

Down to the wire

Once the plain old telephone service, the role of the telephone wire continues ...

Within touching distance

Graphene is starting to filter onto the market. HEAD claims its tennis racquets ...

Making light work of photonics

Today's world is permeated by electronics, from industry to communications, ...

NI Trend Watch 2014

This report from National Instruments summarises the latest trends in the ...

Capactive sensing

This whitepaper looks at a number of capacitive sensing applications to ...

Altium's Innovation Station

An introduction to the Altium Innovation Station. It includes an overview of ...

IBM tackles 22nm challenges

IBM has announced the semiconductor industry’s first computationally based ...

BEEAs 2013

9th October 2014, 8 Northumberland, London

Self-destructing electronics

Researchers at Iowa State University have created transient electronics that ...

MEMS switch for 'true 4G'

General Electric has created a 3GHz RF MEMS switch that can handle up to 5kW of ...

Smart fabrics developed at NPL

NPL has developed a new method to produce conductive textiles. The technique ...

Electronic charge to 800mph

Breaking the land speed record would require a very special blend of latest ...

Flash drives semi technologies

Demand for NAND flash is said to be growing at 45% per year, driven mainly by ...

Top tech trends for 2013

Bee Thakore, European technical marketing manager for element14, gives an ...

Nathan Hill, director, NGI

Research into graphene won Andre Geim and Kostya Novoselov the Nobel prize in ...

Brent Hudson, Sagentia

Sagentia's ceo tells Graham Pitcher how the consulting company is anticipating ...

Prof Donal Bradley, Imperial

Graham Pitcher talks to a researcher who was 'there at the start' of the ...