Nanotechnology Now |
Home > Press > Hydrogen advances graphene use
 |
Abstract:
Physicists at Linköping University have shown that a dose of hydrogen or helium can render the "super material" graphene even more useful.
Graphene has engendered high expectations whereof its extreme properties depend on the fact that it consists of a single sheet of carbon atoms. However the attraction forces between the atoms cause the sheets to be drawn to each other. One solution is to add atomic hydrogen between the layers.
Hydrogen advances graphene use
Linköping, Sweden | Posted on January 15th, 2012Presented in the eminent journal Physical Review A, the researchers' calculations show that the hydrogen at a given concentration affects the atomic van der Waals forces and becomes repulsive instead of attractive. The result is that graphene sheets repel each other and float freely just a few nanometres apart (an example of the so-called quantum levitation).
Professor Bo E. Sernelius, who conducted the study in conjunction with his former doctoral student Mathias Boström, identifies several possible applications of the discovery:
Storage of hydrogen as vehicle fuel
Creation of a single graphene sheet by peeling them from a pile that has grown on a substrate of silicon carbide; a method developed at Linköping University
Repulsive forces are ideal for the manufacture of friction-free components on a Nano scale, for example, robots and sensors for medical purposes.
In the present study the researchers began with two undoped sheets of graphene on a substrate of silicon dioxide (silica). The starting position is the van der Waals attractive forces and the sheets are compelled closer together. However once atomic hydrogen is added, repulsive forces arise. A similar effect was observed using other gases such as molecular hydrogen (H2) and helium.
Graphene is a two-dimensional material, which means that it retains a very special character. It is flexible, transparent, stronger than a diamond and has a superior ability to conduct electric current. In 2010 André Geim and Konstantin Novoselov received a Nobel Prize in Physics because for the first time ever they succeeded in producing stable flakes of material.
####
For more information, please click here
Contacts:
Bo E. Sernelius
46-013-281-724
Copyright © Linköping University
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:
| Related Links |
| Related News Press |
News and information
Pioneering breakthrough of chemical nanoengineering to design drugs controlled by light June 18th, 2013
Study Shows How the Nanog Protein Promotes Growth of Head and Neck Cancer June 18th, 2013
New Method to Synthesize Zinc Oxide Nanoparticles with High Catalytic Activity June 18th, 2013
Production of Polyaniline Biosensors Modified with Conductive Polymer Composites June 18th, 2013
Graphene
Controlling magnetic clouds in graphene June 14th, 2013
Spot-welding graphene nanoribbons atom by atom June 13th, 2013
Unzipped nanotubes unlock potential for batteries: Rice University lab combines graphene nanoribbons with tin oxide for improved anodes June 13th, 2013
Graphene and semiconductor technology together: smaller, cheaper, better June 12th, 2013
Nanomedicine
Pioneering breakthrough of chemical nanoengineering to design drugs controlled by light June 18th, 2013
Study Shows How the Nanog Protein Promotes Growth of Head and Neck Cancer June 18th, 2013
Production of Polyaniline Biosensors Modified with Conductive Polymer Composites June 18th, 2013
European Technology Platform for Nanomedicine and Nanomed2020 European Consortium Launch the Nanomedicine Award June 17th, 2013
Sensors
Production of Polyaniline Biosensors Modified with Conductive Polymer Composites June 18th, 2013
Monell-led research identifies scent of melanoma: New research may lead to early non-invasive detection and diagnosis June 14th, 2013
Discovery of new material state counterintuitive to laws of physics June 14th, 2013
Nanotechnology helps track and improve drug action in pancreatic cancer June 13th, 2013
Discoveries
Which qubit my dear? New method to distinguish between neighbouring quantum bits June 18th, 2013
Pioneering breakthrough of chemical nanoengineering to design drugs controlled by light June 18th, 2013
Study Shows How the Nanog Protein Promotes Growth of Head and Neck Cancer June 18th, 2013
New Method to Synthesize Zinc Oxide Nanoparticles with High Catalytic Activity June 18th, 2013
Announcements
Pioneering breakthrough of chemical nanoengineering to design drugs controlled by light June 18th, 2013
Study Shows How the Nanog Protein Promotes Growth of Head and Neck Cancer June 18th, 2013
New Method to Synthesize Zinc Oxide Nanoparticles with High Catalytic Activity June 18th, 2013
Production of Polyaniline Biosensors Modified with Conductive Polymer Composites June 18th, 2013
Energy
Polymer-coated catalyst protects "artificial leaf" June 17th, 2013
Efficient and inexpensive: Researchers develop catalyst material for fuel cells: Platinum-nickel nano-octahedra save 90 percent platinum June 17th, 2013
Nanoparticles helping to recover more oil June 15th, 2013
Nanoparticle Opens the Door to Clean-Energy Alternatives June 14th, 2013
Automotive/Transportation
Efficient and inexpensive: Researchers develop catalyst material for fuel cells: Platinum-nickel nano-octahedra save 90 percent platinum June 17th, 2013
Filmmaking magic with polymers June 12th, 2013
'Popcorn' particle pathways promise better lithium-ion batteries June 11th, 2013
Fuel Cells
Efficient and inexpensive: Researchers develop catalyst material for fuel cells: Platinum-nickel nano-octahedra save 90 percent platinum June 17th, 2013
Discovery of new material state counterintuitive to laws of physics June 14th, 2013
Noble way to low-cost fuel cells, halogenated graphene may replace expensive platinum June 6th, 2013
Quantum nanoscience
Data Highways for Quantum Information June 13th, 2013
Spooky action put to order Different types of 'entanglement' classified June 6th, 2013
Quantum teleportation between atomic systems over long distances June 6th, 2013
 |
||
 |
||
| The latest news from around the world, FREE | ||
 |
||
|
|
||
| Premium Products | ||
 |
||
|
Only the news you want to read!
Learn More |
||
 |
||
|
University Technology Transfer & Patents
Learn More |
||
 |
||
|
Full-service, expert consulting
Learn More |
||
|
|
||
abbigliamento uomo
Computer Accessories
| © Copyright 1999-2013 7th Wave, Inc. All Rights Reserved | PRIVACY POLICY :: CONTACT US :: STATS :: SITE MAP :: ADVERTISE |