Quantifying the sorting efficiency of self-propelled run-and-tumble swimmers by geometrical ratchets

• Autorzy: Iván Berdakin , Alejandro Silhanek , Hernán Moyano Cortéz , Verónica Marconi , Carlos Condat
• Języki publikacji: EN

Abstrakty

EN

Suitable asymmetric microstructures can be used to control the direction of motion in microorganism populations. This rectification process makes it possible to accumulate swimmers in a region of space or to sort different swimmers. Here we study numerically how the separation process depends on the specific motility strategies of the microorganisms involved. Crucial properties such as the separation efficiency and the separation time for two bacterial strains are precisely defined and evaluated. In particular, the sorting of two bacterial populations inoculated in a box consisting of a series of chambers separated by columns of asymmetric obstacles is investigated. We show how the sorting efficiency is enhanced by these obstacles and conclude that this kind of sorting can be efficiently used even when the involved populations differ only in one aspect of their swimming strategy.

Słowa kluczowe

EN

swimmer sorting; motility; ratchet

• Czasopismo: Open Physics
• Rocznik: 2013
• Tom: 11
• Numer: 12
• Strony: 1653-1661

Daty

wydano

2013-12-01

online

2013-12-20

Twórcy

autor

Iván Berdakin,

autor

Alejandro Silhanek

• Département de Physique, Université de Liège, B-4000, Sart Tilman, Belgium,

autor

Hernán Moyano Cortéz

• Facultad de Matemática, Astronomía y Física, Universidad Nacional de Córdoba, X5000HUA, Córdoba, Argentina,

autor

Verónica Marconi,

autor

Carlos Condat,

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Identyfikatory

DOI

10.2478/s11534-013-0300-7