Nanotechnology Now

Our NanoNews Digest Sponsors



Heifer International

Wikipedia Affiliate Button


android tablet pc

Home > Press > UDE-Researchers produce high-quality graphene

Abstract:
Professor Michael Horn-von Hoegen at the Center for Nanointegration (CeNIDE) at the University Duisburg-Essen (UDE) has developed a process capable of producing a high-quality product with a single step.

UDE-Researchers produce high-quality graphene

Germany | Posted on June 7th, 2011

Graphene is the electronic miracle material of the 21st century. Until now, only sheets that were very small or of a somewhat inferior quality could be produced that were too small or not well suited for high-tech applications. Now, however, Professor Michael Horn-von Hoegen at the Center for Nanointegration (CeNIDE) at the University Duisburg-Essen (UDE) has developed a process capable of producing a high-quality product with a single step. The results of his research have been published in the journal „Applied Physics Letters‰ (Vol.98, No. 14)

The difference in scale between graphene‚s thickness and that of a sheet of paper can be compared to the difference between that same piece of paper and the height of the Bosphorus Bridge in Istanbul. Graphene conducts electricity like no other material in the world and it is extremely resilient. Until recently, it had one major flaw which could not be taken lightly: the consensus among researchers around the world was it would never exist in a stable format. Nevertheless, in 2004 the Russian scientists Andre Geim and Konstantin Novoselov succeeded in producing graphene, for which they received the Nobel Prize in Physics in 2010. UDE also has a number of projects that explore this miracle material.

Graphene is comprised of a honeycomb carbon structure only a single atom thick˜no material can be thinner than that. Of course, it is extremely laborious to produce larger sheets of the material. Even when it does work the quality of the product leaves much to be desired. This is where the research from Professor Horn-von Hoegen‚s experimental physics group comes into play. He states, „Our goal is to understand the growth of the sheet in detail, so that we can develop a Œrecipe‚ for producing graphene that is free from defects, as large as possible, and suitable for industrial applications.‰

He developed the recently-published procedure in collaboration with researchers from the universities of Cologne and Twente: Ethylene gas is used as a catalyst on the surface of an iridium crystal to produce a carbon layer that is exactly one single atom thick. Horn-von Hoegen‚s team tested the quality of the product themselves, directly following fabrication, using high resolution low energy electron diffraction (LEED). The LEED immediately reveals defects as star shaped structures. Horn-von Hoegen explained, „They may look pretty, but they indicate that the individual carbon honeycomb structures are distorted. For that reason we are delighted when the diffraction images don‚t reveal any stars˜they‚re boring, but they‚re perfect.‰

Graphene is regarded as the only two-dimensional solid object in the world. Within it, electrons move faster than in any other substance, which attests to its extreme conductivity. In battery technology, particularly given the rapidly growing interest in electric cars, the prospect of a super-conductive membrane between the battery‚s poles is especially promising. It could even replace silicon in a future generation of computers and greatly increase processing capabilities, enabling many more computations at a faster speed. This would only be possible with high-quality graphene, which makes the work of the UDE professor particularly critical.

####

For more information, please click here

Contacts:
Birte Vierjahn

Copyright © CeNIDE, University of Duisburg-Essen

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

News and information

New star-shaped molecule breakthrough: Scientists at The University of Manchester have generated a new star-shaped molecule made up of interlocking rings, which is the most complex of its kind ever created September 22nd, 2014

Iranian Researchers Synthesize Stable Ceramic Nanopowders at Room Temperature September 20th, 2014

SouthWest NanoTechnologies (SWeNT) Receives NIST Small Business Innovation Research (SBIR) Phase 1 Award to Produce Greater than 99% Semiconducting Single-Wall Carbon Nanotubes September 19th, 2014

Toward optical chips: A promising light source for optoelectronic chips can be tuned to different frequencies September 19th, 2014

New research points to graphene as a flexible, low-cost touchscreen solution September 19th, 2014

Graphene

New research points to graphene as a flexible, low-cost touchscreen solution September 19th, 2014

Biosensors Get a Boost from Graphene Partnership: $5 Million Investment Supports Dozens of Jobs and Development of 300mm Fabrication Process and Wafer Transfer Facility September 18th, 2014

Carbon Sciences Developing Breakthrough Technology to Mass-Produce Graphene -- the New Miracle Material: Company Enters Into an Agreement With the University of California, Santa Barbara (UCSB) to Fund the Further Development of a New Graphene Process September 16th, 2014

Chip Technology

SouthWest NanoTechnologies (SWeNT) Receives NIST Small Business Innovation Research (SBIR) Phase 1 Award to Produce Greater than 99% Semiconducting Single-Wall Carbon Nanotubes September 19th, 2014

Toward optical chips: A promising light source for optoelectronic chips can be tuned to different frequencies September 19th, 2014

IEEE International Electron Devices Meeting To Celebrate 60th Anniversary as The Leading Technical Conference for Advanced Semiconductor Devices September 18th, 2014

‘Small’ transformation yields big changes September 16th, 2014

Nanoelectronics

SouthWest NanoTechnologies (SWeNT) Receives NIST Small Business Innovation Research (SBIR) Phase 1 Award to Produce Greater than 99% Semiconducting Single-Wall Carbon Nanotubes September 19th, 2014

Rice rolls 'neat' nanotube fibers: Rice University researchers' acid-free approach leads to strong conductive carbon threads September 15th, 2014

Excitonic Dark States Shed Light on TMDC Atomic Layers: Berkeley Lab Discovery Holds Promise for Nanoelectronic and Photonic Applications September 11th, 2014

Researchers Create World’s Largest DNA Origami September 11th, 2014

Discoveries

New star-shaped molecule breakthrough: Scientists at The University of Manchester have generated a new star-shaped molecule made up of interlocking rings, which is the most complex of its kind ever created September 22nd, 2014

Iranian Scientists Separate Zinc Ion at Low Concentrations September 20th, 2014

Iranian Researchers Synthesize Stable Ceramic Nanopowders at Room Temperature September 20th, 2014

Toward optical chips: A promising light source for optoelectronic chips can be tuned to different frequencies September 19th, 2014

Announcements

New star-shaped molecule breakthrough: Scientists at The University of Manchester have generated a new star-shaped molecule made up of interlocking rings, which is the most complex of its kind ever created September 22nd, 2014

Synthesis of Nanostructures with Controlled Shape, Size in Iran September 22nd, 2014

Iranian Scientists Separate Zinc Ion at Low Concentrations September 20th, 2014

Toward optical chips: A promising light source for optoelectronic chips can be tuned to different frequencies September 19th, 2014

NanoNews-Digest
The latest news from around the world, FREE



  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More














ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project







© Copyright 1999-2014 7th Wave, Inc. All Rights Reserved PRIVACY POLICY :: CONTACT US :: STATS :: SITE MAP :: ADVERTISE