Nonuniform friction-area dependency for antimony oxide surfaces sliding on graphite

Claudia Ritter, Mehmet Z. Baykara, Bert Stegemann, Markus Heyde, Klaus Rademann, Jan Schroers, and Udo D. Schwarz
Phys. Rev. B 88, 045422 – Published 15 July 2013

Abstract

We present frictional measurements involving controlled lateral manipulation of antimony nanoparticles on graphite featuring atomically smooth particle-substrate interfaces via tapping- and contact-mode atomic force microscopy. As expected from earlier studies, the power required for lateral manipulation as well as the frictional forces recorded during the manipulation events exhibit a linear dependence on the contact area over a wide size range from 2000 nm2 to 120 000 nm2. However, we observe a significant and abrupt increase in frictional force and dissipated power per contact area at a value of about 20 000 nm2, coinciding with a phase transition from amorphous to crystalline within the antimony particles. Our results suggest that variations in the structural arrangement and stoichiometry of antimony oxide at the interface between the particles and the substrate may be responsible for the observed effect.

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  • Received 15 March 2013

DOI:https://doi.org/10.1103/PhysRevB.88.045422

©2013 American Physical Society

Authors & Affiliations

Claudia Ritter1,2, Mehmet Z. Baykara3, Bert Stegemann4, Markus Heyde1,*, Klaus Rademann1, Jan Schroers2, and Udo D. Schwarz2,†

  • 1Institute of Chemistry, Humboldt Universität zu Berlin, Brook-Taylor-Strasse 2, 12489 Berlin, Germany
  • 2Department of Mechanical Engineering and Materials Science and Center for Research on Interface Structures and Phenomena (CRISP), Yale University, P.O. Box 208284, New Haven, Connecticut 06520, USA
  • 3Department of Mechanical Engineering and UNAM–Institute of Materials Science and Nanotechnology, Bilkent University, Bilkent, 06800 Ankara, Turkey
  • 4Hochschule für Technik und Wirtschaft Berlin–University of Applied Sciences, Wilhelminenhofstrasse 75A, 12459 Berlin, Germany

  • *Present address: Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany.
  • Corresponding author: udo.schwarz@yale.edu

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Issue

Vol. 88, Iss. 4 — 15 July 2013

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