Shear created by a sinking particle reorients elongated bacteria, reducing non-motile encounter rates by roughly the square of the aspect ratio, while motile bacteria experience focusing or screening depending on the ratio of sinking to swimming speed.
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Encounter rates between bacteria and small sinking particles
Shear created by a sinking particle reorients elongated bacteria, reducing non-motile encounter rates by roughly the square of the aspect ratio, while motile bacteria experience focusing or screening depending on the ratio of sinking to swimming speed.