Spreading on viscoelastic solids: are contact angles selected by Neumann's law?
نویسندگان
چکیده
منابع مشابه
Contact angles on a soft solid: from Young's law to Neumann's law.
The contact angle that a liquid drop makes on a soft substrate does not obey the classical Young's relation, since the solid is deformed elastically by the action of the capillary forces. The finite elasticity of the solid also renders the contact angles differently from those predicted by Neumann's law, which applies when the drop is floating on another liquid. Here, we derive an elastocapilla...
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1Physics of Fluids Group, Faculty of Science and Technology, Mesa+ Institute, University of Twente, 7500 AE Enschede, The Netherlands 2School of Engineering and Materials Science, Queen Mary University of London, London E1 4NS, UK 3Department of Mechanical Engineering, University of Maryland, College Park, MD 20742, USA 4Physique et Mécanique des Milieux Hétérogènes, UMR 7636 ESPCI-CNRS, Univ. ...
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Poisson’s ratio in viscoelastic solids is in general a time dependent (in the time domain) or a complex frequency dependent quantity (in the frequency domain). We show that the viscoelastic Poisson’s ratio has a different time dependence depending on the test modality chosen; interrelations are developed between Poisson’s ratios in creep and relaxation. The difference, for a moderate degree of ...
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We study crack propagation in a viscoelastic solid. Using simple arguments, we derive equations for the velocity dependence of the crack-tip radius, a (v) , and for the energy per unit area to propagate the crack, G (v) . For a viscoelastic modulus E (omega) which increases as omega(1-s) (0< s< 1) in the transition region between the rubbery region and the glassy region, we find that a (v) appr...
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ژورنال
عنوان ژورنال: Soft Matter
سال: 2020
ISSN: 1744-683X,1744-6848
DOI: 10.1039/c9sm01453e