MPIDS Colloquium: Building towards bio-mechanical fluidic machines
14:15 - 15:15
Dr. Tyler Shendruk
Interdisciplinary Centre for Mathematical Modeling, Mathematical Sciences, Loughborough University, UK
Max-Planck-Institut für Dynamik und Selbstorganisation (MPIDS)
Prandtl Lecture Hall
While traditional fluids only flow when acted upon, a remarkable class of biomaterials can spontane-ously flow by means of their own internal energy. These “active fluids” comprise a wide range of biological systems that bridge between biological and condensed matter systems due to being intrin-sically driven out of equilibrium by internal energy injection from their microscopic elements, such as swimming bacteria or motor protein-microtubule bundles. The typically elongated nature of these active constituents frequently favors nematic alignment; however, their activity disturbs orientational order, continuously creating and annihilating pairs of topological defects. While these defects play a pivotal role in generating disorderly turbulent-like flows, they also have potential for engineering novel applications and understanding morphology when spatiotemporally ordered flow states can be produced.
This talk will describe the transitions between complex ordered flows produced by configurations of “dancing” defects and disorderly active turbulence within microchannels and rotary arrays. The knowledge gained from studying such “living” flows within confining and driven environments is essential for future designs of hybrid bio-mechanical devices that have the potential to work in con-junction with active biological fluids, rather than against them.