Nanotechnology Now

Our NanoNews Digest Sponsors





Heifer International

Wikipedia Affiliate Button


android tablet pc

Home > Press > Nanofriction on the tip of the microscope: A new research paper from SISSA published in Nature Materials

This is a graphical rendering of the "system" studied by Pellegrini, Santoro, Tosatti.

Credit: SISSA
This is a graphical rendering of the "system" studied by Pellegrini, Santoro, Tosatti.

Credit: SISSA

Abstract:
Atomic force microscopes are able to reproduce spectacular images, at the scale of single atoms. This is made possible by the oscillation of a very sharp probe tip over the surface being observed. The tip never touches the surface but gets so close to it, at distances in the order of one billionth of a metre, that it "feels" the force due to the interaction with the atoms making up the material being observed. These are tiny forces, in the order of nanonewtons (meaning one billion times smaller than the weight of an apple). By measuring these forces one can reproduce an image of the material. A research group, which brings together experimental physicists from the University of Basel and theoretical physicists from SISSA, has observed and explained a peculiar effect, a source of "friction" in this type of nanoscopic observations.

Nanofriction on the tip of the microscope: A new research paper from SISSA published in Nature Materials

Trieste, Italy | Posted on December 16th, 2013

When the tip of the microscope oscillates over certain surfaces, in this case over NbSe2 (niobium selenide), peaks of "dissipation" (i.e., loss of energy) can be seen when the tip is at specific distances from the surface, as if it were held back, at certain locations, by some frictional force. This effect, which is related to a property of the surface known as charge density waves (CDW), was experimentally observed by the Basel physicists and first explained by Franco Pellegrini, Giuseppe Santoro and Erio Tosatti, of SISSA, by means of a theoretical model analysed with the use of numerical simulations.

"Our model describes in detail the interaction between the tip of the atomic force microscope and the CDW," explains Pellegrini. "The model reproduces - and predicts - the data observed experimentally".

"Knowledge of nanofriction is important today. Progressive miniaturization of electronic devices makes it crucial to understand the mechanisms underlying energy losses", continues Pellegrini. "In addition, thanks to our work we now have a more accurate description of charge density waves". The paper was published on December 15 in Nature Materials.

####

For more information, please click here

Contacts:
Federica Sgorbissa

39-040-378-7644

Copyright © International School of Advanced Studies (SISSA)

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

Iran to Hold 3rd Int'l Engineering Materials, Metallurgy Conference October 25th, 2014

Haydale Secures Exclusive Development and Supply Agreement with Tantec A/S: New reactors to be built and commissioned by Tantec A/S represent another step forward towards the commercialisation of graphene October 24th, 2014

QuantumWise guides the semiconductor industry towards the atomic scale October 24th, 2014

SUNY Polytechnic Institute Invites the Public to Attend its Popular Statewide 'NANOvember' Series of Outreach and Educational Events October 23rd, 2014

Strengthening thin-film bonds with ultrafast data collection October 23rd, 2014

Imaging

National Synchrotron Light Source II Achieves 'First Light' October 23rd, 2014

NIST offers electronics industry 2 ways to snoop on self-organizing molecules October 22nd, 2014

Discoveries

QuantumWise guides the semiconductor industry towards the atomic scale October 24th, 2014

Iranian, Malaysian Scientists Study Nanophotocatalysts for Water Purification October 23rd, 2014

Nanoparticle technology triples the production of biogas October 23rd, 2014

Strengthening thin-film bonds with ultrafast data collection October 23rd, 2014

Announcements

Iran to Hold 3rd Int'l Engineering Materials, Metallurgy Conference October 25th, 2014

Haydale Secures Exclusive Development and Supply Agreement with Tantec A/S: New reactors to be built and commissioned by Tantec A/S represent another step forward towards the commercialisation of graphene October 24th, 2014

QuantumWise guides the semiconductor industry towards the atomic scale October 24th, 2014

Strengthening thin-film bonds with ultrafast data collection October 23rd, 2014

Interviews/Book Reviews/Essays/Reports/Podcasts/Journals

NYU Researchers Break Nano Barrier to Engineer the First Protein Microfiber October 23rd, 2014

Iranian Scientists Apply Nanotechnology to Produce Surgery Suture October 23rd, 2014

Iranian, Malaysian Scientists Study Nanophotocatalysts for Water Purification October 23rd, 2014

Strengthening thin-film bonds with ultrafast data collection October 23rd, 2014

Tools

Haydale Secures Exclusive Development and Supply Agreement with Tantec A/S: New reactors to be built and commissioned by Tantec A/S represent another step forward towards the commercialisation of graphene October 24th, 2014

National Synchrotron Light Source II Achieves 'First Light' October 23rd, 2014

Advancing thin film research with nanostructured AZO: Innovnano’s unique and cost-effective AZO sputtering targets for the production of transparent conducting oxides October 23rd, 2014

NIST offers electronics industry 2 ways to snoop on self-organizing molecules October 22nd, 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