Surface tension and contact with soft elastic solids
Robert W. Style,Callen Hyland,Rostislav Boltyanskiy,John S. Wettlaufer,John S. Wettlaufer,Eric R. Dufresne +5 more
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TLDR
It is shown that, whereas the Johnson-Kendall-Roberts theory holds for particles larger than a critical, elastocapillary lengthscale, it fails for smaller particles, and adhesion of small particles mimics the adsorption of particles at a fluid interface, with a size-independent contact angle between the undeformed surface and the particle given by a generalized version of the Young's law.Abstract:
Solid contacts on a microscopic level are widely described by a classical contact mechanics theory. Here Style et al. show that this theory breaks down when a small particle adheres to a soft surface where a fluid-like behaviour is observed because of the predominant role played by surface tension.read more
Citations
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Yield stress fluid flows: A review of experimental data
TL;DR: In this article, the state-of-the-art yield-structure properties of simple (non-thixotropic) yield stress fluids under various conditions, viz., uniform flows in straight channels or rheometrical geometries, complex stationary flows in channels of varying cross-section such as extrusion, expansion, flow through a porous medium, transient flows such as flows around obstacles, spreading, spin-coating, squeeze flow, and elongation.
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Traction force microscopy in physics and biology
Robert W. Style,Rostislav Boltyanskiy,Guy K. German,Callen Hyland,Christopher W. MacMinn,Aaron F. Mertz,Aaron F. Mertz,Larry Wilen,Ye Xu,Eric R. Dufresne +9 more
TL;DR: This paper showcases the wide range of applicability of TFM, describes the theory, and provides experimental details and code so that experimentalists can rapidly adopt this powerful technique.
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Elastocapillarity: Surface Tension and the Mechanics of Soft Solids
TL;DR: In this paper, the authors outline the theory of surface stresses from both mechanical and thermodynamic perspectives, emphasizing the relationship between surface stress and surface energy, and highlight how surface stresses cause dramatic departures from classic theories for wetting (Young-Dupre), adhesion (Johnson-Kendall-Roberts), and composites (Eshelby).
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Active superelasticity in three-dimensional epithelia of controlled shape
Ernest Latorre,Sohan Kale,Laura Casares,Manuel Gomez-Gonzalez,Marina Uroz,Léo Valon,Roshna V. Nair,Elena Garreta,Nuria Montserrat,Aránzazu del Campo,Aránzazu del Campo,Benoit Ladoux,Benoit Ladoux,Marino Arroyo,Xavier Trepat +14 more
TL;DR: This study reveals a type of mechanical behaviour that enables epithelial sheets to sustain extreme stretching under constant tension, and shows that in epithelial cells this instability is triggered by a stretch-induced dilution of the actin cortex, and is rescued by the intermediate filament network.
References
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Surface energy and the contact of elastic solids
TL;DR: In this paper, the influence of surface energy on the contact between elastic solids is discussed and an analytical model for its effect upon the contact size and the force of adhesion between two lightly loaded spherical solid surfaces is presented.
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Force measurements with the atomic force microscope: Technique, interpretation and applications
TL;DR: The atomic force microscope (AFM) is not only used to image the topography of solid surfaces at high resolution but also to measure force-versus-distance curves as discussed by the authors, which provide valuable information on local material properties such as elasticity, hardness, Hamaker constant, adhesion and surface charge densities.
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Adhesion of spheres : the JKR-DMT transition using a dugdale model
TL;DR: In this article, the energy release rate G is computed by the J-integral and the equilibrium is given by G = w. To avoid self consistent numerical calculations based on a specific interaction model (Lennard-Jones potential for example) we have used a Dugdale model, which allows analytical solutions.