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Title: Bridging the gap between Microrheology and Tribology
Authors: Clasen, Christian
Kavehpour, P.
McKinley, G.H. #
Issue Date: Feb-2008
Conference: 72. Jahrestagung der Deutsche Physikalischen Gesellschaft edition:72 location:Berlin date:25-29 Februar 2008
Abstract: Tribology and elastohydrodynamic lubrication have traditionally been
considered to be a subject apart from classical bulk rheology and the
rapidly developing area of microrheological investigation. The principal
reason for this separation is that although fluid properties in
each field are key to the observed flow and friction phenomena, the
experimental approach and the resulting terminology differ substantially
and prohibit a direct translation of the results. In particular the
lack of well-defined viscometric kinematics for tribological experiments
and the difficulties in achieving sufficiently-precise fixture alignment in
regular rheometry on the microscale have inhibited the merging of the
results from these fields.
We show in this paper how recent developments in the area of sliding
plate microrheometers with controlled gaps on the order of micro- to
nanometers, and triborheometers with defined plate-and-plate geometry
parameters and normal stress control can bridge this gap between
classical tribology and rheology.
Publication status: published
KU Leuven publication type: IMa
Appears in Collections:Soft Matter, Rheology and Technology Section
# (joint) last author

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