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

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      Author
      Ritter, C.
      Baykara, M. Z.
      Stegemann, B.
      Heyde, M.
      Rademann, K.
      Schroers, J.
      Schwarz, U. D.
      Date
      2013
      Source Title
      Physical Review B
      Print ISSN
      2469-9950
      Electronic ISSN
      2469-9969
      Publisher
      American Physical Society
      Volume
      88
      Issue
      4
      Pages
      045422-1 - 045422-6
      Language
      English
      Type
      Article
      Item Usage Stats
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      96
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      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. © 2013 American Physical Society.
      Keywords
      68.35.Af
      68.35.Ct
      Permalink
      http://hdl.handle.net/11693/20894
      Published Version (Please cite this version)
      http://dx.doi.org/10.1103/PhysRevB.88.045422
      Collections
      • Department of Mechanical Engineering 254
      • Institute of Materials Science and Nanotechnology (UNAM) 1775
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