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arXiv · 0903.2371

Dumbbell transport and deflection in a spatially periodic potential

Jochen Bammert·Walter Zimmermann
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Abstract

We present theoretical results on the deterministic and stochastic motion of a dumbbell carried by a uniform flow through a three-dimensional spatially periodic potential. Depending on parameters like the flow velocity, there are two different kinds of movement: transport along a potential valley and stair-like motion oblique to the potential trenches. The crossover between these two regimes, as well as the deflection angle, depends on the size of the dumbbell. Moreover, thermal fluctuations cause a resonance-like variation in the deflection angle as a function of the dumbbell extension.

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Jochen Bammert, Walter Zimmermann. 2009-03-13. Dumbbell transport and deflection in a spatially periodic potential. https://doi.org/10.1140/epje%2Fi2008-10421-5

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