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Controlling Flow Speeds of Microtubule-Based 3D Active Fluids Using Temperature
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Guided active particles.

Reinaldo García-García1, Pierre Collet2, Lev Truskinovsky1

  • 1PMMH, CNRS UMR 7636, ESPCI Paris, Université PSL, 10 rue de Vauquelin, F-75005 Paris, France.

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|November 28, 2019
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Summary
This summary is machine-generated.

We introduce a guided active drift model for active systems, enabling directed motion using external fields and chemical reactions. This model generalizes Stokes efficiency to assess cargo-carrying capabilities and demonstrates applications in electric circuits.

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Area of Science:

  • Physics
  • Chemical Physics
  • Soft Matter Physics

Background:

  • Active systems exhibit complex behaviors driven by internal energy dissipation.
  • Understanding externally influenced motion (taxis) in active matter is crucial for technological applications.
  • Existing models often lack mechanisms to incorporate external guiding fields effectively.

Purpose of the Study:

  • To develop a theoretical model for guided active drift in response to external fields.
  • To generalize the concept of Stokes efficiency for active particles under stall conditions.
  • To demonstrate the broad applicability of the proposed mechanism in diverse systems.

Main Methods:

  • Development of a theoretical model incorporating an external guiding field.
  • Introduction of vectorial coupling between mechanical degrees of freedom and chemical reactions.
  • Generalization of Stokes efficiency to include stall conditions for cargo transport analysis.

Main Results:

  • The model successfully describes externally driven active drift.
  • A generalized Stokes efficiency quantifies cargo-carrying capacity under stall conditions.
  • Demonstration of guided electric circuits converting fluctuations into directed current without a voltage source.

Conclusions:

  • The guided active drift model provides a versatile framework for active systems.
  • The generalized Stokes efficiency offers a new metric for active particle performance.
  • The mechanism shows potential for energy harvesting and directed transport applications.