title: Forced detachment of immersed elastic rubber beads.
abstract: We investigate the strength of adhesion and the dynamics of detachment of elastic beads (Young's modulus E approximately 1 MPa) adhering to a horizontal solid surface in a viscous liquid. The beads are initially compressed on the surface. Their unbinding is imposed by fast vertical stretching (above a certain threshold value). The decrease in the contact radius is monitored by interferential microscopy. We find that the dynamics of detachment involves three steps: (i) fast elastic decompression, (ii) slow adhesive detachment, and (iii) catastrophic rupture. They can be interpreted by a transfer of the Johnson Kendall Roberts (JKR) energy toward viscous losses in the liquid wedge, near the rubber/solid/liquid (R/S/L) contact line.
authors: Institut Curie, Centre de recherche, CNRS UMR 168 - Université Pierre et Marie Curie, 11 rue Pierre et Marie Curie, 75231 Paris Cedex 05 - France.
authors: H
authors: H
authors: Gérardin
authors: A
authors: A
authors: Burdeau
authors: A
authors: A
authors: Buguin
authors: F
authors: F
authors: Brochard-Wyart