Design and performance of a high-resolution frictional force microscope with quantitative three-dimensional force sensitivity

Dienwiebel, Martin; Kuyper, E. de; Crama, L.; Frenken, J.W.M.; Heimberg, J. A.; Spaanderman, Dirk-Jan; Loon, D. Glastra van; Zijlstra, T.; Drift, E. van der

doi:10.1063/1.1889233

Cited by 36 publications

(13 citation statements)

References 25 publications

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“…The details of the instrument have been given elsewhere. 23,24 Here, we reanalyze the experimental data on superlubricity in Ref. 22, in search for thermal effects at a range of relative corrugations.…”

Section: A Dependence Of Friction On Potential Corrugationmentioning

confidence: 99%

Thermolubricity in atomic-scale friction

et al. 2008

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In this paper, we use a set of rate equations to describe the thermal activation of a tip moving along a one-dimensional lattice, including the possibility of multiple back and forth jumps between neighboring potential wells. This description of an atomic-scale friction experiment is used to investigate how temperature acts as a lubricant, an effect that we refer to as thermolubricity. We discuss the detailed theoretical aspects of the model, which explains many aspects of the variation in atomic friction over a wide range of temperatures, velocities, and surface corrugations. We conclude that friction at low velocities and low surface corrugations is much lower than the weak logarithmic velocity dependence predicted before. Another consequence of the model is the trivial result that friction is zero in the zero-velocity limit. We confront numerical results from our theoretical model with experiments, in which the surface corrugation was controlled by use of geometrical effects, to demonstrate the experimental existence of thermolubricity. Although the calculations produce excellent fits to our data, the values of the fitting parameters clearly indicate that the underlying single-spring model suffers from an intrinsic flaw, which we ascribe to either the absence of flexibility of the tip or the restriction to a one-dimensional sliding geometry

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Section: A Dependence Of Friction On Potential Corrugationmentioning

confidence: 99%

Thermolubricity in atomic-scale friction

et al. 2008

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“…Over the last 20 years, the development of the FFM (friction force microscope), a scanning probe microscope with atomic resolution, sensitive to lateral forces [4][5][6][7], has triggered renewed interest in the fundamentals of friction, by providing force information on contacts with atomic dimensions. This is complementary to that of the surface forces apparatus (SFA), which features large, atomically flat contacts, with excellent control over the distance between the contacting surfaces [5].…”

Section: Mems Tribometersmentioning

confidence: 99%

The Leiden MEMS Tribometer: Real Time Dynamic Friction Loop Measurements With an On-Chip Tribometer

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2007

Tribol Lett

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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, onchip 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.

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“…On the macroscale, engineers use experiments [6][7][8] to qualify machine components. On the smallest length-scale, atomic force microscopy (AFM) helps to fundamentally study friction forces and wear [2,9,10] for a large range of material classes [11][12][13]. In these experiments, the contact stresses are high and remain elastic because of the elevated nanoscale hardness [2].…”

Section: Introductionmentioning

confidence: 99%