Absolute Negative Mobility in a Ratchet Flow

Beltrame, Philippe

doi:10.1007/978-3-319-29701-9_15

Cited by 2 publications

(1 citation statement)

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“…With a pore size of about ten microns and a fluid such as air and metal particles, it would be possible to observe this selective transport during the short duration of microgravity experiments such as in a drop tower or in a zero-g flight. The author of Beltrame (2018) showed that noise triggers the transport for specific parameters in ratchet systems. Therefore, particle transport could still be effective even in the presence of g-jitter.…”

Section: Discussionmentioning

confidence: 99%

Selective Transport of Airborne Microparticles Through Micro-channels Under Microgravity

Makhoul

Beltrame

2021

Microgravity Sci. Technol.

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This paper analyzes the possibility of obtaining the selective transport of microparticles suspended in air in a microgravity environment through modulated channels without net displacement of air. Using numerical simulation and bifurcation analysis tools, we show the existence of intermittent particle drift under the Stokes assumption of the fluid flow. The particle transport can be selective and the direction of transport is controlled only by the kind of pumping used. The selective transport is interpreted as a deterministic ratchet effect due to spatial variations in the flow and the particle drag. This ratchet phenomenon could be applied to the selective transport of metal particles during the short duration of microgravity experiments.

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Section: Discussionmentioning

confidence: 99%