Nanotechnology Now

Our NanoNews Digest Sponsors





Heifer International

Wikipedia Affiliate Button


android tablet pc

Home > News > Mass Can Be 'Created' Inside Graphene, Say Physicists

October 21st, 2010

Mass Can Be 'Created' Inside Graphene, Say Physicists

Abstract:
One of the most exciting new ideas in solid state physics is that graphene can act as a laboratory for studying exotic relativistic physics. It turns out that the electronic properties of graphene can be tuned so that the movement of electrons and holes through the structure at speeds of 10^6 m/s is mathematically equivalent to the behaviour of electrons travelling in a vacuum close to the speed of light.

In the language of physics, their behaviour is governed not by the conventional Schrodinger equation that ordinary electrons obey, but by the massless Dirac equation than describes relativistic physics. These equations take no account of mass (as the name implies)--so the electrons and holes behave as if they have no mass.

That's important because, in the past, the relativistic behaviour of electrons was only accessible to physicists with a high energy particle accelerator in their yard. Now any laboratory equipped with carbon, electricity and wires can do it.

This has led to massive interest: one idea is that a new generation of graphene-based electronic devices will be able to exploit the effects possible in relativistic physics rather than using plain old vanilla effects (although exactly how isn't yet clear).

Source:
technologyreview.com

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

News and information

Nano Ruffles in Brain Matter: Freiburg researchers decipher the role of nanostructures around brain cells in central nervous system function October 31st, 2014

Gold nanoparticle chains confine light to the nanoscale October 31st, 2014

'Nanomotor lithography' answers call for affordable, simpler device manufacturing October 31st, 2014

Device invented at Johns Hopkins provides up-close look at cancer on the move: Microscopic view of metastasis could give insight about how to keep cancer in check October 31st, 2014

Physics

Sussex physicists find simple solution for quantum technology challenge October 28th, 2014

New evidence for an exotic, predicted superconducting state October 27th, 2014

Solid nanoparticles can deform like a liquid: Unexpected finding shows tiny particles keep their internal crystal structure while flexing like droplets October 12th, 2014

Unconventional photoconduction in an atomically thin semiconductor: New mechanism of photoconduction could lead to next-generation excitonic devices October 9th, 2014

Possible Futures

Imaging electric charge propagating along microbial nanowires October 20th, 2014

Superconducting circuits, simplified: New circuit design could unlock the power of experimental superconducting computer chips October 18th, 2014

Nanocoatings Market By Product Is Expected To Reach USD 8.17 Billion By 2020: Grand View Research, Inc. October 15th, 2014

Perpetuus Carbon Group Receives Independent Verification of its Production Capacity for Graphenes at 140 Tonnes per Annum: Perpetuus Becomes the First Manufacturer in the Sector to Allow Third Party Audit October 7th, 2014

Nanotubes/Buckyballs

Tiny carbon nanotube pores make big impact October 29th, 2014

Materials for the next generation of electronics and photovoltaics: MacArthur Fellow develops new uses for carbon nanotubes October 21st, 2014

Special UO microscope captures defects in nanotubes: University of Oregon chemists provide a detailed view of traps that disrupt energy flow, possibly pointing toward improved charge-carrying devices October 21st, 2014

Imaging electric charge propagating along microbial nanowires October 20th, 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