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DTSTART;TZID=America/New_York:20201204T140000
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SUMMARY:PICS Colloquium: "Swarming bacteria as novel active biomaterials – insights into the collective mechanics\, particle transport and morphological adaptation in swarming bacteria from in-silico experiments"
DESCRIPTION:Abstract: Flagellated and motile bacteria\, in isolation or in coexistence with fungi\, are implicated in about two-thirds of human infections. During infection\, and generally even in relatively benign situations\, bacteria may colonize surfaces via a process called swarming – a form of rapid translocation associated with changes in cell phenotype. As swarmer cells move rapidly\, they interact with each other forming cohesive structures that then rapidly develop into collective multicellular aggregates. Understanding the swarming process is important for biomedicine\, and is relevant to evolutional biology – in\, for instance\, understanding the evolution of phylogenetic spatial structures in bacterial populations. On a complementary note\, understanding the biophysical and mechanical aspects of swarming can provide insights into synthesizing the next generation of adaptable matter. \nWhile comprised of independently cells\, swarms exhibit collective properties and remarkable emergent flow patterns. Recent work supports treating these collective systems as novel living biomaterials with evolving composite properties. In this talk\, I will discuss how the combination of key experimental discoveries combined with multi-scale simulations enables careful interrogation\, analysis and understanding of microbial swarms and films. The experimental component of the talk will highlight experimental observations on swarming Serratia marcescens\, a rod-shaped gram negative bacterium. Following that\, I will discuss recent work on a suite of computational approaches that we exploit to simulate these active systems. Our approaches include agent-based full-hydrodynamics simulations\, adaptations of Active Brownian Particle (ABP) stochastic models\, and mean-field continuum models solved using parallellized level-set methods on high resolution and highly adaptive Quadtree meshes.
URL:https://seasevents.nmsdev7.com/event/pics-colloquium-swarming-bacteria-as-novel-active-biomaterials-insights-into-the-collective-mechanics-particle-transport-and-morphological-adaptation-in-swarming-bacteria-from-in-silico/
CATEGORIES:Colloquium
ORGANIZER;CN="Penn Institute for Computational Science (PICS)":MAILTO:dkparks@seas.upenn.edu
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