Nanotechnology Now

Our NanoNews Digest Sponsors



Heifer International

Wikipedia Affiliate Button


android tablet pc

Home > Press > May the force be with the atomic probe: New models suggest devising means of probing a surface at a sub-micrometric level as this will help us understand how electrons’ diffusion affects long-range attractive forces

Abstract:
Theoretical physicist Elad Eizner from Ben Gurion University, Israel, and colleagues created models to study the attractive forces affecting atoms located at a wide range of distances from a surface, in the hundreds of nanometers range. Their results, about to be published in EPJ D, show that these forces depend on electron diffusion, regardless of whether the surface is conducting or not. Ultimately, these findings could contribute to designing minimally invasive surface probes.

May the force be with the atomic probe: New models suggest devising means of probing a surface at a sub-micrometric level as this will help us understand how electrons’ diffusion affects long-range attractive forces

New York, NY and Heidelberg, Germany | Posted on December 21st, 2012

Bombarding a surface with atoms helps us understand the distribution of its electrons and the structural arrangement of the surface atoms. The authors focused on understanding how a long-range force— referred to as the van der Waals-Casimir-Polder (vdW-CP) force — present between an atom and a surface allow us to distinguish surface characteristics on the basis of their conductivity.
A key factor in understanding the behaviour of the force, they realised, is the size of the electron cloud surrounding an impurity charge in the system. The latter depends both on the electrons' conductivity and their capability to diffuse in and along the surface.
They devised one model for the diffusion of the electronic charge in the bulk of the material and another one in the near-surface region. They tested their models on both conducting and non-conducting surfaces. They were thus able to explain why the atom-surface force shows a continuous transition in terms of conductivity between both types of surfaces.
For distances comparable to the size of the electron cloud spread, the strength of the vdW-CP attraction force, they found, can help distinguish between bulk and surface electrons diffusion. It could therefore be used as a probe. Potential applications exist, for example, in quantum computer hardware architectures focusing on the interface between different carriers of quantum bits of information.

Reference:

E.Eizner, B. Horovitz, and C. Henkel (2012), Van der Waals-Casimir-Polder interaction of an atom with a composite surface, European Physical Journal D, DOI: 10.1140/epjd/e2012-30294-x

####

For more information, please click here

Contacts:
Ann Koebler

49-622-148-78414

Copyright © Springer

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 Links

European Physical Journal:

Related News Press

News and information

Iran Exports Nanodrugs to Syria November 24th, 2014

Iranian Experts Clean Uranium-Contaminated Water by Nano-Particles November 23rd, 2014

Novel Method Found for Connection of Metallic Alloys to Polymers November 23rd, 2014

New research project supports internationalisation in nano-research: Launch of new “Baltic Sea Network” November 22nd, 2014

Imaging

Leica Microsystems Presents Universal Hybrid Detector for Single Molecule Detection and Imaging at SfN and ASCB: Leica HyD SMD - the Optimal Detector for Precise and Reliable SMD data November 20th, 2014

NRL Scientists Discover Novel Metamaterial Properties within Hexagonal Boron Nitride November 20th, 2014

Spectral Surface Mapping with Microscopic Resolution: CRAIC Technologies introduces Spectral Surface Mapping™ (S2M™) software November 18th, 2014

Two sensors in one: Nanoparticles that enable both MRI and fluorescent imaging could monitor cancer, other diseases November 18th, 2014

Physics

Researchers discern the shapes of high-order Brownian motions November 17th, 2014

Heat Transfer Sets the Noise Floor for Ultrasensitive Electronics November 11th, 2014

Noise in a microwave amplifier is limited by quantum particles of heat November 10th, 2014

Live Images from the Nano-cosmos: Researchers watch layers of football molecules grow November 5th, 2014

Quantum Computing

Pseudospin-driven spin relaxation mechanism in graphene November 11th, 2014

Heat Transfer Sets the Noise Floor for Ultrasensitive Electronics November 11th, 2014

Noise in a microwave amplifier is limited by quantum particles of heat November 10th, 2014

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

Discoveries

Iranian Experts Clean Uranium-Contaminated Water by Nano-Particles November 23rd, 2014

Novel Method Found for Connection of Metallic Alloys to Polymers November 23rd, 2014

NMTI announces breakthrough solutions for HAMR nanoantenna for next-generation ultra-high density magnetic storage November 21st, 2014

Nano Sorbents Able to Remove Pollutions Caused by Oil Derivatives November 20th, 2014

Announcements

Iran Exports Nanodrugs to Syria November 24th, 2014

Iranian Experts Clean Uranium-Contaminated Water by Nano-Particles November 23rd, 2014

Novel Method Found for Connection of Metallic Alloys to Polymers November 23rd, 2014

New research project supports internationalisation in nano-research: Launch of new “Baltic Sea Network” November 22nd, 2014

Tools

Iranian Experts Clean Uranium-Contaminated Water by Nano-Particles November 23rd, 2014

Leica Microsystems Presents Universal Hybrid Detector for Single Molecule Detection and Imaging at SfN and ASCB: Leica HyD SMD - the Optimal Detector for Precise and Reliable SMD data November 20th, 2014

Nanometrics Announces Upcoming Investor Events November 19th, 2014

Field-emission plug-and-play solution for microwave electron guns: To simplify the electron emission mechanism involved in microwave electron guns, a team of researchers has created and demonstrated a field-emission plug-and-play solution based on ultrananocrystalline diamond November 18th, 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