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Ratchet Effect for Selective Transport of Microparticles in Fluid Suspension
The ratchet effect enables directed transport of particles in noisy systems, even in the absence of a net force (zero bias). When exploited in periodic structures, this phenomenon paves the way for innovative applications in selective microparticle sorting.
This seminar will present a theoretical analysis of bifurcations in a 1D model, highlighting the critical role of parity symmetry and geometry, as well as the influence of small fluctuations on transport. Results will be extended to more realistic 3D simulations, which serve as the foundation for an experimental microgravity project (supported by CNES) aimed at validating these predictions.