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Article Dans Une Revue EPL - Europhysics Letters Année : 2020

A novel approach to chemotaxis: Active particles guided by internal clocks

Résumé

Motivated by the observation of non-exponential run-time distributions of bacterial swimmers, we propose a minimal phenomenological model for taxis of active particles whose motion is controlled by an internal clock. The ticking of the clock depends on an external concentration field, e.g. a chemical substance. We demonstrate that these particles can detect concentration gradients and respond to them by moving up- or down-gradient depending on the clock design, albeit measurements of these fields are purely local in space and instantaneous in time. Altogether, our results open a new route in the study of directional navigation, by showing that the use of a clock to control motility actions represents a generic and versatile toolbox to engineer behavioral responses to external cues, such as light, chemical, or temperature gradients.

Dates et versions

hal-02905641 , version 1 (23-07-2020)

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Luis Gómez Nava, Robert Grossmann, Marius Hintsche, Carsten Beta, Fernando Peruani. A novel approach to chemotaxis: Active particles guided by internal clocks. EPL - Europhysics Letters, 2020, 130 (6), pp.68002. ⟨10.1209/0295-5075/130/68002⟩. ⟨hal-02905641⟩
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