Virtual Seminar"Mimicking ciliary spatiotemporal dynamics using active elastic filaments"Arvind Gopinath


Monday, February 15, 2021 - 14:00




Micro/Bio/Nanofluidics (Shen) Unit would like to invite you to the virtual seminar by Prof. Arvind Gopinath on February 15 (Monday).
Date: Monday, February 15, 2021
Time: 14:00-15:00
**Zoom session

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Meeting ID: 992 1185 4716
Passcode: 940840


Arvind Gopinath
Assistant Professor
Bioengineering at the University of California, Merced


Mimicking ciliary spatiotemporal dynamics using active elastic filaments


Eukaryotic cilia are biological filamentous organelles that undergo synchronized cooperative oscillations due to the action of internal molecular motors and power processes such as locomotion, mucus clearance, embryogenesis and directed cell migration.There is growing interest in designing artificial analogues that mimic these naturally active systems. In recent work, we identified a mechanism different and simpler from those driving biological cilia that may be exploited to mimic their graceful wave-like oscillations. In my talk, I will review these results and then describe recent work on spatiotemporal patterns that emerge in multi-filament systems driven by this simpler mechanism. When steric interactions dominate over hydrodynamic interactions, small clusters of active filaments stabilize to synchronized oscillations with strongly occluded characteristics. Generalizing to large one-dimensional arrays, we find rich emergent behaviors, including metachronal waves, and modulated wavetrains.  We also find filament roughness generates a locking-mechanism that transforms traveling patterns into jammed configurations; a spatiotemporal feature not observed in purely hydrodynamically interacting systems. I will conclude with a summary of computational methods that may build on these results to guide the development of bioinspired active carpets and colloidal swimmers.


Prof. Amy Shen

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