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30 papers · 1 filter
Controlling heat transport and flow structures in thermal turbulence using ratchet surfaces
Hechuan Jiang, Xiaojue Zhu, Varghese Mathai +3
In this combined experimental and numerical study on thermally driven turbulence in a rectangular cell, the global heat transport and the coherent flow structures are controlled wi…
Electron-Phonon Coupling Constant of Metallic Overlayers from Specular He-Atom Scattering
G. Benedek, Salvador Miret-Artes, J. R. Manson +1
He atom scattering has been shown to be a sensitive probe of electron-phonon interaction properties at surfaces. Here it is shown that measurements of the thermal attenuation of th…
Maximum in density heterogeneities of active swimmers
Fabian Jan Schwarzendahl, Marco G. Mazza
Suspensions of unicellular microswimmers such as flagellated bacteria or motile algae exhibit spontaneous density heterogeneities at large enough concentrations. Based on the relat…
Spatial mapping reveals multi-step pattern of wound healing in Physarum polycephalum
Felix Bäuerle, Mirna Kramar, Karen Alim
Wounding is a severe impairment of function, especially for an exposed organism like the network-forming true slime mould Physarum polycephalum. The tubular network making up the o…
Local pore size correlations determine flow distributions in porous media
Karen Alim, Shima Parsa, David A. Weitz +1
The relationship between the microstructure of a porous medium and the observed flow distribution is still a puzzle. We resolve it with an analytical model, where the local correla…
Chromatic polynomials of random graphs
Frank Van Bussel, Christoph Ehrlich, Denny Fliegner +2
Chromatic polynomials and related graph invariants are central objects in both graph theory and statistical physics. Computational difficulties, however, have so far restricted stu…