The Leiden MEMS tribometer: Real time dynamic friction loop measurements with an on-chip tribometer

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Abstract

On-chip MEMS tribometer devices until now have been much less sophisticated for dynamically sensing frictional forces than their FFM (friction force microscope) counterparts. In this article, we present a MEMS-based tribometer that can be used to measure dynamically, on-chip and in-situ, the frictional properties of MEMS-scale contact geometries. The device provides the first FFM-like friction loops with contacting MEMS sidewall surfaces. Depending on the normal load two regimes of operation are identified. At low and intermediate loads, the frictional behaviour reflects wear-less relative motion of the silicon oxide surfaces of the MEMS device and we observe repeatable, irregular stick-slip behaviour, related to the surface roughness. At very high loads, wear causes changes in the topography of the contacting surfaces. © 2007 Springer Science+Business Media, LLC.

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Van Spengen, W. M., & Frenken, J. W. M. (2007). The Leiden MEMS tribometer: Real time dynamic friction loop measurements with an on-chip tribometer. Tribology Letters, 28(2), 149–156. https://doi.org/10.1007/s11249-007-9259-0

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