Zobrazeno 1 - 10
of 519
pro vyhledávání: '"Debrégeas G."'
We report on the multi-contact frictional dynamics of model elastomer surfaces rubbed against bare glass slides. The surfaces consist of layers patterned with thousands spherical caps (radius of curvature 100 $\mu$m) distributed both spatially and in
Externí odkaz:
http://arxiv.org/abs/1311.1690
Dry solid friction is often accompanied by force modulations originating from stick-slip instabilities. Here a distinct, quasi-static mechanism is evidenced leading to quasi-periodic force oscillations during sliding contact between an elastomer bloc
Externí odkaz:
http://arxiv.org/abs/1107.2578
Publikováno v:
Science 323, 5920 (2009) 1503-6
In humans, the tactile perception of fine textures (spatial scale <200 micrometers) is mediated by skin vibrations generated as the finger scans the surface. To establish the relationship between texture characteristics and subcutaneous vibrations, a
Externí odkaz:
http://arxiv.org/abs/0911.4885
An original MEMS-based force sensing device is designed which allows to measure spatially resolved normal and tangential stress fields at the base of an elastomeric film. This device is used for the study of the contact stress between a rough film an
Externí odkaz:
http://arxiv.org/abs/0711.1117
We study the effect of shear on the aging dynamics of a colloidal suspension of synthetic clay particles. We find that a shear of amplitude $\gamma$ reduces the relaxation time measured just after the cessation of shear by a factor $\exp(-\gamma/\gam
Externí odkaz:
http://arxiv.org/abs/cond-mat/0210554
The growth dynamics of an air finger injected in a visco-elastic gel (a PVA/borax aqueous solution) is studied in a linear Hele-Shaw cell. Besides the standard Saffmann-Taylor instability, we observe - with increasing finger velocities - the existenc
Externí odkaz:
http://arxiv.org/abs/cond-mat/0201136
Autor:
Debregeas, G., Josserand, C.
We propose a model to describe the quasistatic shearing of dry granular materials, which notably captures the differences in velocity profiles recently observed in 2 and 3-D Couette flow experiments. In our scheme, the steady-state flow is due to the
Externí odkaz:
http://arxiv.org/abs/cond-mat/9901336
Autor:
Le Goc G; Sorbonne Université, CNRS, Institut de Biologie Paris-Seine (IBPS), Laboratoire Jean Perrin (LJP), Paris, France., Lafaye J; Sorbonne Université, CNRS, Institut de Biologie Paris-Seine (IBPS), Laboratoire Jean Perrin (LJP), Paris, France., Karpenko S; Sorbonne Université, CNRS, Institut de Biologie Paris-Seine (IBPS), Laboratoire Jean Perrin (LJP), Paris, France.; Université Paris Sciences et Lettres, Paris, France.; Present address : Department of Collective Behavior, Max Planck Institute of Animal Behavior, Konstanz, Germany., Bormuth V; Sorbonne Université, CNRS, Institut de Biologie Paris-Seine (IBPS), Laboratoire Jean Perrin (LJP), Paris, France., Candelier R; Sorbonne Université, CNRS, Institut de Biologie Paris-Seine (IBPS), Laboratoire Jean Perrin (LJP), Paris, France., Debrégeas G; Sorbonne Université, CNRS, Institut de Biologie Paris-Seine (IBPS), Laboratoire Jean Perrin (LJP), Paris, France. georges.debregeas@sorbonne-universite.fr.
Publikováno v:
BMC biology [BMC Biol] 2021 Sep 21; Vol. 19 (1), pp. 208. Date of Electronic Publication: 2021 Sep 21.
Autor:
Beiza-Canelo N; Sorbonne Université, CNRS, Institut de Biologie Paris-Seine (IBPS), Laboratoire Jean Perrin (LJP), 75005 Paris, France., Moulle H; Sorbonne Université, CNRS, Institut de Biologie Paris-Seine (IBPS), Laboratoire Jean Perrin (LJP), 75005 Paris, France., Pujol T; Sorbonne Université, CNRS, Institut de Biologie Paris-Seine (IBPS), Laboratoire Jean Perrin (LJP), 75005 Paris, France; IBENS, Département de Biologie, École Normale Supérieure, CNRS, Inserm, PSL Research University, 75005 Paris, France., Panier T; Sorbonne Université, CNRS, Institut de Biologie Paris-Seine (IBPS), Laboratoire Jean Perrin (LJP), 75005 Paris, France; Sorbonne Université, CNRS, Institut de Biologie Paris-Seine (IBPS), Plateforme d'Imagerie, 75005 Paris, France., Migault G; Sorbonne Université, CNRS, Institut de Biologie Paris-Seine (IBPS), Laboratoire Jean Perrin (LJP), 75005 Paris, France., Le Goc G; Sorbonne Université, CNRS, Institut de Biologie Paris-Seine (IBPS), Laboratoire Jean Perrin (LJP), 75005 Paris, France., Tapie P; Sorbonne Université, CNRS, Institut de Biologie Paris-Seine (IBPS), Laboratoire Jean Perrin (LJP), 75005 Paris, France., Desprat N; Laboratoire de Physique de l'École Normale Supérieure, ENS, Université PSL, CNRS, Sorbonne Université, Université Paris Cité, 75005 Paris, France; Université Paris Diderot, 10 Rue Alice Domon et Leonie Duquet, 75013 Paris, France., Straka H; Faculty of Biology, Ludwig-Maximilians-University Munich, Grosshadernerstr. 2, 82152 Planegg, Germany., Debrégeas G; Sorbonne Université, CNRS, Institut de Biologie Paris-Seine (IBPS), Laboratoire Jean Perrin (LJP), 75005 Paris, France., Bormuth V; Sorbonne Université, CNRS, Institut de Biologie Paris-Seine (IBPS), Laboratoire Jean Perrin (LJP), 75005 Paris, France. Electronic address: volker.bormuth@sorbonne-universite.fr.
Publikováno v:
Current biology : CB [Curr Biol] 2023 Jun 19; Vol. 33 (12), pp. 2438-2448.e6. Date of Electronic Publication: 2023 Jun 06.
Publikováno v:
In Journal of the Mechanics and Physics of Solids 2009 57(12):1921-1933