Zobrazeno 1 - 10
of 215
pro vyhledávání: '"Katgert, P."'
Publikováno v:
PRL 108, 268306 (2012)
We demonstrate that emulsion droplets stabilized by interfacial particles become unstable beyond a size threshold set by gravity. This holds not only for colloids but supra-colloidal glass beads, using which we directly observe the ejection of partic
Externí odkaz:
http://arxiv.org/abs/1211.5564
Rotation Measure synthesis (RM synthesis) of the Westerbork Synthesis Radio Telescope (WSRT) observations at 2 m wavelength of the FAN region at l=137deg, b=+7deg shows the morphology of structures in the ionized interstellar medium. We interpret the
Externí odkaz:
http://arxiv.org/abs/1210.6801
Publikováno v:
Soft Matter 9, 9739-9746 (2013)
Amorphous materials as diverse as foams, emulsions, colloidal suspensions and granular media can {\em jam} into a rigid, disordered state where they withstand finite shear stresses before yielding. The jamming transition has been studied extensively,
Externí odkaz:
http://arxiv.org/abs/1110.0977
Autor:
Katgert, Gijs, van Hecke, Martin
We experimentally probe the vicinity of the jamming point J, located at a density $\phi$ corresponding to random close packing ($\phi_{rcp} = 0.842$), in two dimensional, bidisperse packings of foam bubbles. We vary the density of the foam layer and
Externí odkaz:
http://arxiv.org/abs/1007.5230
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
We probe the flow of two dimensional foams, consisting of a monolayer of bubbles sandwiched between a liquid bath and glass plate, as a function of driving rate, packing fraction and degree of disorder. First, we find that bidisperse, disordered foam
Externí odkaz:
http://arxiv.org/abs/0903.5349
We probe the relation between shear induced structural relaxation and rheology in experiments on sheared two-dimensional foams. The relaxation time, which marks the crossover to diffusive bubble motion, is found to scale non-trivially with the local
Externí odkaz:
http://arxiv.org/abs/0811.0534
We investigate the properties of the Galactic ISM by applying Faraday tomography to a radio polarization data set in the direction of the Galactic anti-centre. We address the problem of missing large-scale structure in our data, and show that this do
Externí odkaz:
http://arxiv.org/abs/0810.4211
The shear flow of two dimensional foams is probed as a function of shear rate and disorder. Disordered foams exhibit strongly rate dependent velocity profiles, whereas ordered foams show rate independence. Both behaviors are captured quantitatively i
Externí odkaz:
http://arxiv.org/abs/0711.4024
We investigate the distribution and properties of Faraday rotating and synchrotron emitting regions in the Galactic ISM in the direction of the Galactic anti-centre. We apply Faraday tomography to a radio polarization dataset that we obtained with th
Externí odkaz:
http://arxiv.org/abs/0706.2548