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9 papers · 1 filter
Internal avalanches in models of granular media
S. Krishnamurthy, H. J. Herrmann, V. Loreto +2
We study the phenomenon of internal avalanching within the context of recently introduced lattice models of granular media. The avalanche is produced by pulling out a grain at the…
Hydrodynamic interactions betweem many spheres
Maria L. Ekiel-Jezewska
This paper is an introductory guide to many-particle hydrodynamic interactions. Basic concepts of the fluid dynamics are assumed to be known. Experience in the Stokes equations is…
Microscopic membrane elasticity and interactions among membrane inclusions: Interplay between the shape, dilation, tilt and tilt-difference modes
J. -B. Fournier
A phenomenological Landau elasticity for the shape, dilation, and lipid-tilt of bilayer membranes is developed. The shape mode couples with the sum of the monolayers' tilt, while t…
Contact forces in regular 3D granular pile
G. Oron, H. J. Herrmann
We present exact results for the contact forces in a three dimensional static piling of identical, stiff and frictionless spheres. The pile studied is a pyramid of equilateral tria…
Coupling between membrane tilt-difference and dilation: a new ``ripple'' instability and multiple crystalline inclusions phases
J. -B. Fournier
A continuum Landau theory for the micro-elasticity of membranes is discussed, which incorporates a coupling between the bilayer thickness variation and the difference in the two mo…
Bi-defects of Nematic Surfactant Bilayers
J. -B. Fournier, L. Peliti
We consider the effects of the coupling between the orientational order of the two monolayers in flat nematic bilayers. We show that the presence of a topological defect on one bil…