Nanotechnology Now

Our NanoNews Digest Sponsors


Heifer International

Wikipedia Affiliate Button

Home > Press > What if the nanoworld slides: A new study to better understand how friction works

What if the nanoworld slides?

Credit: SISSA
What if the nanoworld slides?

Credit: SISSA

Abstract:
A study published by Andrea Vanossi, Nicola Manini and Erio Tosatti - three SISSA researchers - in PNAS (Proceedings of the National Academy of Sciences) provides a new tool to better understand how sliding friction works in nanotribology, through colloidal crystals.

What if the nanoworld slides: A new study to better understand how friction works

Trieste, Italy | Posted on November 8th, 2012

By theoretically studying these systems of charged microparticles, researchers are able to analyze friction forces through molecular dynamics simulations with accuracy never experienced before.

"There are several and very concrete potentialities", stated Andrea Vanossi, one of the members of the research group. "Just think of the constant miniaturization of high-tech components and of all the different nanotechnology sectors: if we understand how friction works at these levels, we will be able to create even more effective molecular motors or functional microsystems".

Colloidals are part of our everyday life (e.g. milk, asphalt or smoke) and they differentiate according to the state of the dispersed and dispersing substance (liquid, solid or gaseous).

The simulations were performed by SISSA in collaboration with ICTP, the Department of Physics in Milan and the CNR-IOM Institute for Materials Manufacturing and they allowed understanding what happens when a colloidal monolayer slides against an optical reticle modifying some parameters such as surface corrugation, drift speed or contact geometry.

The research method is also something new. Before this simulation was performed, only some recent experiments carried out in Germany tried for the first time to describe the behaviour of individual particles of a colloid in friction conditions, but never in such a precise way.

More in detail, researchers also suggest a way to directly extract the energy lost in friction by using the sliding data of the colloid. "This study is innovative also because it will allow predicting the different regimes of static friction realized according to the density of colloids and the strength of the optical reticle", added Erio Tosatti, another member of the research group. "All this lets us assume that crystalline solid surfaces will act in a similar way. We have never been able to make such a hypothesis before".

This study will open the way to new systems to explore the complexity of similar events, maybe at a microscopic scale.

####

About International School of Advanced Studies (SISSA)
The International School for Advanced Studies (SISSA), founded in 1978 and the first institution in Italy to promote post-graduate courses to achieve a Doctor Philosophiae (or PhD) degree, is a centre of excellence in the Italian and international university context. It encompasses around 65 teachers, 100 post docs and 245 PhD students, and is located in Trieste, in an over 100,000 square-metre large campus with a wonderful view on the Gulf of Trieste.

Established as a high-level training school and as a centre for theoretical research in mathematics and physics, in the 1990s SISSA broadened its interests to include new cutting-edge disciplines, such as cognitive neuroscience and neurobiology. Today its PhD courses provide new and innovative post-graduate curricula, and SISSA is considered a reference model in the international scientific scenario under every respect, comparable to few other research and teaching institutes worldwide.

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

New flexible material can make any window 'smart' August 23rd, 2016

University of Puerto Rico and NASA back in the news XEI reports August 23rd, 2016

Nanoparticles that speed blood clotting may someday save lives August 23rd, 2016

Spider silk: Mother Nature's bio-superlens August 22nd, 2016

Physics

Superconductivity: After the scenario, the staging August 20th, 2016

Superconductivity: After the scenario, the staging August 20th, 2016

Scientists uncover origin of high-temperature superconductivity in copper-oxide compound: Analysis of thousands of samples reveals that the compound becomes superconducting at an unusually high temperature because local electron pairs form a 'superfluid' that flows without resist August 19th, 2016

Perpetual 'ice water': Stable solid-liquid state revealed in nanoparticles: Gallium nanoparticles that are both solid and liquid are stable over a range of 1000 degrees Fahrenheit August 5th, 2016

Discoveries

New flexible material can make any window 'smart' August 23rd, 2016

Nanoparticles that speed blood clotting may someday save lives August 23rd, 2016

Researchers reduce expensive noble metals for fuel cell reactions August 22nd, 2016

Spider silk: Mother Nature's bio-superlens August 22nd, 2016

Announcements

New flexible material can make any window 'smart' August 23rd, 2016

University of Puerto Rico and NASA back in the news XEI reports August 23rd, 2016

Nanoparticles that speed blood clotting may someday save lives August 23rd, 2016

Researchers reduce expensive noble metals for fuel cell reactions August 22nd, 2016

Research partnerships

A new way to display the 3-D structure of molecules: Metal-organic frameworks provide a new platform for solving the structure of hard-to-study samples August 21st, 2016

Researchers watch catalysts at work August 19th, 2016

Tracing barnacle's footprint August 19th, 2016

Legions of nanorobots target cancerous tumors with precision: Administering anti-cancer drugs redefined August 16th, 2016

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







Car Brands
Buy website traffic