Perturbation analysis of low-Re flow in an undulating microchannel shows a hydrodynamic ratchet effect producing ~0.15 μm/s directed transport for micrometer particles when wavelength is ~1 μm.
Oksendal,Stochastic differential equations: an intro- duction with applications(Springer Science & Business Media, 2013)
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Hydrodynamic Ratchet for Tracer Transport in a Soft Microchannel: A Detailed Analysis
Perturbation analysis of low-Re flow in an undulating microchannel shows a hydrodynamic ratchet effect producing ~0.15 μm/s directed transport for micrometer particles when wavelength is ~1 μm.