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Optimisation of chiral structures for micro-scale propulsion

Presented by: 
E Keaveny Imperial College London
Monday 24th June 2013 - 11:45 to 12:30
INI Seminar Room 1
In micron-scale hydrodynamics, shape and geometry play a strong role in determining the speed at which a body can move through fluid. This shape dependence is particularly important to the design of many microfluidic devices, including magnetically actuated micro-structures fabricated and studied for biomedical applications. In this talk, I will discuss several important experimentally-realisable micro-structures whose shapes couple their rotations and translations. I will address the optimal design of these devices through an infinite-dimensional optimisation problem, obtaining geometries that maximise speed for a given applied torque. Our optimisations show that attached payloads have a significant effect on optimal micro-structure shapes and current designs can be improved by upwards of 450%.
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University of Cambridge Research Councils UK
    Clay Mathematics Institute London Mathematical Society NM Rothschild and Sons