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Related Experiment Videos

Peeling off an elastica from a smooth attractive substrate.

Xabier Oyharcabal1, Thomas Frisch

  • 1Institut de Recherche sur les Phénomènes Hors Equilibre, UMR 6594, CNRS, Université d'Aix-Marseille, France. oyharcabal@irphe.univ-mrs.fr

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
|May 21, 2005
PubMed
Summary

This study investigates how an inextensible rod detaches from a substrate under force using continuum mechanics. Researchers identified critical forces and distinct adhesion regimes, providing insights into rod-substrate interactions.

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Area of Science:

  • Physics
  • Materials Science
  • Mechanics

Background:

  • Understanding adhesion and detachment phenomena is crucial in various scientific and engineering fields.
  • The behavior of flexible structures interacting with surfaces under external forces requires theoretical and numerical investigation.

Purpose of the Study:

  • To theoretically investigate the unbinding process of an inextensible rod from a substrate under vertical force.
  • To determine the force-stretching relationship and critical unbinding forces.
  • To explore different adhesion regimes and the influence of potential parameters.

Main Methods:

  • Utilizing continuum mechanics and the elastica model.
  • Employing a medium-range van der Waals potential to describe substrate attraction.

Related Experiment Videos

  • Numerically solving a nonlinear boundary value problem.
  • Analytically studying the contact potential case.

    • Main Results:

    • Obtained the force-stretching relation at zero temperature.
    • Determined the critical force for rod unbinding as a function of three dimensionless parameters.
    • Identified two distinct regimes of adhesion.
    • Analyzed the limiting case of zero van der Waals radius.

    Conclusions:

    • The study provides a theoretical framework for understanding rod unbinding from substrates.
    • The identified adhesion regimes and critical forces offer valuable data for predicting material behavior.
    • The findings are applicable to systems involving flexible filaments interacting with surfaces.