article · 11/10/2011
Texture-Induced Modulations of Friction Force: The Fingerprint Effect
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Résumé
Modulations of the friction force in dry solid friction are usually attributed to macroscopic stick-slip instabilities. Here we show that a distinct, quasistatic mechanism can also lead to nearly periodic force oscillations during sliding contact between an elastomer patterned with parallel grooves, and abraded glass slides. The dominant oscillation frequency is set by the ratio between the sliding velocity and the grooves period. A model is derived which quantitatively captures the dependence of the force modulations amplitude with the normal load, the grooves period, and the slides roughness characteristics. The model's main ingredient is the nonlinearity of the friction law. Since such nonlinearity is ubiquitous for soft solids, this ``fingerprint effect{''} should be relevant to a large class of frictional configurations and have important consequences in human digital touch.
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Wandersman, E., Candelier, R., Debregeas, G., & Prevost, A. (2011). Texture-Induced Modulations of Friction Force: The Fingerprint Effect. Physical Review Letters, 107(16). https://doi.org/10.1103/PhysRevLett.107.164301@article{Wandersman2011_7,
author = {Wandersman, Elie and Candelier, Raphael and Debregeas, Georges and Prevost, Alexis},
year = {2011},
month = {10},
title = {Texture-Induced Modulations of Friction Force: The Fingerprint Effect},
journal = {Physical Review Letters},
publisher = {AMER PHYSICAL SOC},
volume = {107},
number = {16},
address = {ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA},
abstract = {Modulations of the friction force in dry solid friction are usually attributed to macroscopic stick-slip instabilities. Here we show that a distinct, quasistatic mechanism can also lead to nearly periodic force oscillations during sliding contact between an elastomer patterned with parallel grooves, and abraded glass slides. The dominant oscillation frequency is set by the ratio between the sliding velocity and the grooves period. A model is derived which quantitatively captures the dependence of the force modulations amplitude with the normal load, the grooves period, and the slides roughness characteristics. The model's main ingredient is the nonlinearity of the friction law. Since such nonlinearity is ubiquitous for soft solids, this ``fingerprint effect\{''\} should be relevant to a large class of frictional configurations and have important consequences in human digital touch.},
url = {http://www.dx.doi.org/10.1103/PhysRevLett.107.164301},
doi = {10.1103/PhysRevLett.107.164301},
issn = {0031-9007},
}TY - JOUR
AU - Wandersman, Elie
AU - Candelier, Raphael
AU - Debregeas, Georges
AU - Prevost, Alexis
PY - 2011
DA - 2011/10/11
TI - Texture-Induced Modulations of Friction Force: The Fingerprint Effect
JO - Physical Review Letters
VL - 107
IS - 16
PB - AMER PHYSICAL SOC
SN - 0031-9007
AB - Modulations of the friction force in dry solid friction are usually attributed to macroscopic stick-slip instabilities. Here we show that a distinct, quasistatic mechanism can also lead to nearly periodic force oscillations during sliding contact between an elastomer patterned with parallel grooves, and abraded glass slides. The dominant oscillation frequency is set by the ratio between the sliding velocity and the grooves period. A model is derived which quantitatively captures the dependence of the force modulations amplitude with the normal load, the grooves period, and the slides roughness characteristics. The model's main ingredient is the nonlinearity of the friction law. Since such nonlinearity is ubiquitous for soft solids, this ``fingerprint effect{''} should be relevant to a large class of frictional configurations and have important consequences in human digital touch.
DO - 10.1103/PhysRevLett.107.164301
UR - http://www.dx.doi.org/10.1103/PhysRevLett.107.164301
ER -