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Measurements of Anisotropic (Off‐Axis) Friction‐Induced Motion
Author(s) -
Kristiansen Kai,
Banquy Xavier,
Zeng Hongbo,
Charrault Eric,
Giasson Suzanne,
Israelachvili Jacob
Publication year - 2012
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201201566
Subject(s) - anisotropy , shearing (physics) , materials science , perpendicular , surface forces apparatus , surface (topology) , mechanics , nanotechnology , composite material , mica , optics , physics , geometry , mathematics
A new 3D sensor‐actuator attachment for a Surface Forces Apparatus (SFA) allows measurements of friction forces between surfaces in all 3 orthogonal directions. The anisotropic friction forces when shearing two mica surfaces separated by a nanometer‐thin film of hexadecane can induce complex transient and steady‐state motions involving displacements perpendicular to the applied force and nonzero velocity at all stages of back‐and‐forth sliding.