University of Cambridge > Talks.cam > Surfaces, Microstructure and Fracture Group > Exploring structural phase transitions in nanofriction

Exploring structural phase transitions in nanofriction

Add to your list(s) Download to your calendar using vCal

If you have a question about this talk, please contact Stephen Walley.

Understanding, and controlling, nanoscale friction are among top priorities in nanoscience and technology, where moving elements are increasingly important. Designing new mechanisms capable of tuning friction, to be employed in addition to traditional means such as lubrication, surface coating, patterning and vibrations, is of great interest both in physics and for nanotechnology applications. Based on molecular dynamics simulations, we present some examples of modeling studies aimed at improving this state of affairs. First, we show that the occurrence of a structural phase transition in a sliding body, can induce considerable changes in its tribological response. This finding opens the possibility to tailor friction by some external field, such as a stress field or an electric field, capable to promote or inhibit the structural phase transition. On a different note, we show that much could be learnt about nanofriction by exploiting the potentiality of cold ion traps. By sliding, through an electric field, the trapped ion chains over a laser-generated corrugated potential, fundamental tribological issues such as the superlubric Aubry transition of incommensurate interfaces can be addressed.

This talk is part of the Surfaces, Microstructure and Fracture Group series.

Tell a friend about this talk:

This talk is included in these lists:

Note that ex-directory lists are not shown.

 

© 2006-2019 Talks.cam, University of Cambridge. Contact Us | Help and Documentation | Privacy and Publicity