Skip to main content
Article
Tribological properties of quasicrystals: Effect of aperiodic versus periodic surface order
Physical Review B
  • Jeong Young Park, Lawrence Berkeley National Laboratory
  • D. F. Ogletree, Lawrence Berkeley National Laboratory
  • M. Salmeron, Lawrence Berkeley National Laboratory
  • R. A. Ribeiro, Iowa State University
  • Paul C. Canfield, Iowa State University
  • Cynthia J. Jenks, Iowa State University
  • Patricia A. Thiel, Iowa State University
Document Type
Article
Publication Date
1-1-2006
DOI
10.1103/PhysRevB.74.024203
Abstract
We investigated the nanoscale tribological properties of a decagonal quasicrystal using a combination of atomic force microscopy and scanning tunneling microscopy in ultrahigh vacuum. This combination permitted a variety of in situ measurements, including atomic-scale structure, friction and adhesion force, tip-sample current, and topography. We found that thiol-passivated tips can be used for reproducible studies of the tip-quasicrystal contact while nonpassivated probes adhere irreversibly to the clean quasicrystalline surface causing permanent modifications. The most remarkable results were obtained on the twofold surface of the Al-Ni-Co decagonal quasicrystal where atoms are arranged periodically along the tenfold axis and aperiodically in the perpendicular direction. Strong friction anisotropy was observed on this surface, with high friction along the periodic direction and low friction in the aperiodic direction.
Comments

This article is from Physical Review B 74, no. 2 (2006): 024203, doi:10.1103/PhysRevB.74.024203.

Copyright Owner
American Physical Society
Language
en
Date Available
June 25, 2013
File Format
application/pdf
Citation Information
Jeong Young Park, D. F. Ogletree, M. Salmeron, R. A. Ribeiro, et al.. "Tribological properties of quasicrystals: Effect of aperiodic versus periodic surface order" Physical Review B Vol. 74 Iss. 2 (2006) p. 024203
Available at: http://works.bepress.com/paul_canfield/21/