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 ====== Research ======
-For most of my scientific life I worked on Granular Fluids but I also have fun with bacteria and the occasional spin model. While real granular particles like sand, gravel, pills, cereals or coffee beans come in all sorts of shapes and are usually quite irregular, as a theoretician I exclusively use spherical (or disk shaped) particles. I prefer to solve problems with pen and paper (and the occasional help of Gradshteyn and Maple) but I also burn a lot of CPU time running and analyzing event driven molecular dynamics simulations. Bateria, I found, are much more complicated than hard spheres. Still I try to tackle them with simple models.
+For most of my scientific life I worked on Granular Fluids but I also have fun with bacteria and the occasional spin model. While real granular particles like sand, gravel, pills, cereals or coffee beans come in all sorts of shapes and are usually quite irregular, as a theoretician I exclusively use spherical (or disk shaped) particles. I prefer to solve problems with pen and paper (and the occasional help of Gradshteyn and Maple) but I also burn a lot of CPU time running and analysing event driven molecular dynamics simulations. Bacteria, I found, are much more complicated than hard spheres. Still I try to tackle them with simple models.
 ===== Granular Rheology =====
-Developing constitutive equations for granular fluids is quite challenging. Many attempts have been made starting with the granular Boltzmann equation or similar approaches from the realm of rarefied gases. Unfortunately, granular flows mostly involve high densities and deformation rates far beyond the linear response regime. By exploiting slow relaxation close to the granular glass transition (see below) I could generalize the //Integration Through Transients// (ITT) approach to granular fluids. For the rich phenomenology
+Developing constitutive equations for granular fluids is quite challenging. Many attempts have been made starting with the granular Boltzmann equation or similar approaches from the realm of rarefied gases. Unfortunately, granular flows mostly involve high densities and deformation rates far beyond the linear response regime. By exploiting slow relaxation close to the granular glass transition (see below) I could generalize the //Integration Through Transients//((Fuchs & Cates [[https://doi.org/10.1122/1.3119084|J. Rheol.]] **53**, 957 (2009) )) (ITT) approach to granular fluids. For the rich phenomenology
   * see [[res:Granular Rheology]]
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   * see [[res:Granular Glass Transition]]
+===== Trail-Mediated Microbial Interaction =====
+A number of micro-organisms leave sticky trails while moving around on surfaces. In turn they react to the presence of trails, effectively using them as a means to communicate((Zhao //et al.// [[http://dx.doi.org/10.1038/nature12155|Nature]] **497**, 388 (2013) )). I could show that trail-mediated self-interactions significantly alter the single particle dynamics and eventually lead to a localization transition. Collectively, we found, trail-mediated interactions to facilitate colony formation in //Pseudomonas aeruginosa//
+  * see [[res:Trail-Mediated Interaction]]
+===== Fluidized Beds =====
+For the development of new measurement techniques for granular fluids it is useful to have efficient and faithful simulation tools. We are exploring the capabilities of a novel hybrid event-driven code((Fiege & Zippelius [[https://doi.org/10.1088/1742-6596/759/1/012001|J. Phys. Conf. Ser.]] **759**, 012001 (2016) )) to simulate bubbling fluidized beds by cross-validating the numerical results with experimental measurements.
+  * see [[res:Fluidized Beds]]
 ===== Rough Granular Particles =====