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DY: Fachverband Dynamik und Statistische Physik
DY 24: Focus Session: New Trends in Nonequilibrium Physics – Conservation Laws and Nonreciprocal Interactions I
DY 24.9: Vortrag
Mittwoch, 20. März 2024, 12:00–12:15, BH-N 243
Liquid mechanics - Exploring instabilities in active condensates — •Florian Rasshofer1, Simon Bauer1, Alexander Ziepke1, Ivan Maryshev1, and Erwin Frey1, 2 — 1Arnold Sommerfeld Center for Theoretical Physics, LMU Munich, Germany — 2Max Planck School Matter to Life, Munich, Germany
This study employs a theoretical framework to investigate the stability and morphology of active condensates. Active condensates, characterized by their consumption of chemical energy (fuel), exhibit unique features absent in passive systems. Their non-equilibrium nature allows for stationary pattern-forming states and more exotic phenomena such as self-propelled domains and dividing droplets.
We present a unifying theory that rationalizes dynamical instabilities observed in various systems, encompassing chemotactic motility-induced phase separation to enzymatically active droplets. Analytical results obtained from classical perturbation theory are shown to be in good agreement with finite element simulations, providing valuable insights into the intricate behavior of active condensates.
Beyond theoretical contributions, our work envisions practical applications. The emergent dynamical phases uncovered offer insights into the potential design of self-assembling micro machines capable of extracting work on a scale not admissible to classical mechanics.
Keywords: phase separation; active matter; pattern formation; chemotaxis; self-assembly