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of 366
pro vyhledávání: '"Van Hecke M"'
Via simulations of flowing foam, we connect the high and intermediate density regimes of complex fluid flows into a consistent microscopic picture of deformation. While at and above the jamming transition, elastic correlations lead to strong spatial
Externí odkaz:
http://arxiv.org/abs/1507.04893
Publikováno v:
PRL 109, 095703 (2012)
When are athermal soft sphere packings jammed ? Any experimentally relevant definition must at the very least require a jammed packing to resist shear. We demonstrate that widely used (numerical) protocols in which particles are compressed together,
Externí odkaz:
http://arxiv.org/abs/1203.3364
Publikováno v:
Phys. Rev. Lett. 107, 108303 (2011)
We establish that the rheological curve of dry granular media is non-monotonic, both in the presence and absence of external mechanical agitations. In the presence of weak vibrations, the non-monotonic flow curves govern a hysteretic transition betwe
Externí odkaz:
http://arxiv.org/abs/1106.2849
We experimentally investigate flow of quasi two-dimensional disordered foams in Couette geometries, both for foams squeezed below a top plate and for freely floating foams. With the top-plate, the flows are strongly localized and rate dependent. For
Externí odkaz:
http://arxiv.org/abs/1001.4723
Autor:
van Hecke, M
Amorphous materials as diverse as foams, emulsions, colloidal suspensions and granular media can jam into a rigid, disordered state where they withstand finite shear stresses before yielding. Here we review the current understanding of the transition
Externí odkaz:
http://arxiv.org/abs/0911.1384
While frictionless spheres at jamming are isostatic, frictional spheres at jamming are not. As a result, frictional spheres near jamming do not necessarily exhibit an excess of soft modes. However, a generalized form of isostaticity can be introduced
Externí odkaz:
http://arxiv.org/abs/0907.3451
Autor:
Dijksman, J. A., van Hecke, M.
Publikováno v:
EPL 88 (2009) 44001
We revisit the problem of compaction of a column of granular matter exposed to discrete taps. We accurately control the vertical motion of the column, which allows us to vary the duration T and the amplitude A of single-cycle sinusoidal taps independ
Externí odkaz:
http://arxiv.org/abs/0903.5499
Akademický článek
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We present the results of a study of vortex arrangements in the peak-effect regime of 2H-NbSe_2 by scanning tunneling microscopy. By slowly increasing the temperature in a constant magnetic field, we observed a sharp transition from collective vortex
Externí odkaz:
http://arxiv.org/abs/cond-mat/0207133
Autor:
Hansen, J. L., van Hecke, M., Ellegaard, C., Andersen, K. H., Bohr, T., Haaning, A., Sams, T.
Patterns of vortex ripples form when a sand bed is subjected to an oscillatory fluid flow. Here we describe experiments on the response of regular vortex ripple patterns to sudden changes of the driving amplitude a or frequency f. A sufficient decrea
Externí odkaz:
http://arxiv.org/abs/cond-mat/0106465