UCL logo

UCL Discovery

UCL home » Library Services » Electronic resources » UCL Discovery

Microscopic Friction Studies on Metal Surfaces

Gosvami, NN; Filleter, T; Egberts, P; Bennewitz, R; (2010) Microscopic Friction Studies on Metal Surfaces. In: TRIBOLOGY LETTERS. (pp. 19 - 24). SPRINGER/PLENUM PUBLISHERS

Full text not available from this repository.

Abstract

Atomically flat and clean metal surfaces exhibit a regime of ultra-low friction at low normal loads. Atomic force microscopy, performed in ultra-high vacuum on Cu(100) and Au(111) surfaces, reveals a clear stick-slip modulation in the lateral force but almost zero dissipation. Significant friction is observed only for higher loads (similar to 4-6 nN above the pull-off force) together with the onset of wear. We discuss the minor role of thermal activation in the low friction regime and suggest that a compliant metallic neck between tip and surface is formed which brings upon the low, load-independent shear stress.

Type: Proceedings paper
Title: Microscopic Friction Studies on Metal Surfaces
Event: 428th Wilhelm and Else Heraeus Seminar on Physics of Tribology - Understanding Friction and Wear in Technical Systems
Location: Bad Honnef, GERMANY
Dates: 2009-03-23 - 2009-03-25
DOI: 10.1007/s11249-009-9508-5
Keywords: Nanotribology, Stick-slip, Atomic force microscopy (AFM), ATOMIC-SCALE FRICTION, SLIDING FRICTION, TRIBOLOGY, NANOINDENTATION, CONTACT, AU(111), MEMS
UCL classification: UCL > School of BEAMS > Faculty of Maths and Physical Sciences > Chemistry
URI: http://discovery.ucl.ac.uk/id/eprint/1301365
Downloads since deposit
0Downloads
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item