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Effective forces between active polymers.

M C Gandikota1, A Cacciuto1

  • 1Department of Chemistry, Columbia University, 3000 Broadway, New York, New York 10027, USA.

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Summary
This summary is machine-generated.

Active fluctuations can induce strong attractive interactions between polymers, causing them to form double-stranded units. This study characterizes polymer interactions under active conditions, mapping them to passive polymer physics.

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Area of Science:

  • Polymer Physics
  • Soft Matter Physics
  • Statistical Mechanics

Background:

  • Characterizing interactions between flexible polymers is a fundamental problem in polymer physics.
  • Active fluctuations introduce non-equilibrium dynamics, altering classical polymer behavior.

Purpose of the Study:

  • To investigate polymer-polymer interactions in the presence of active fluctuations.
  • To establish conditions for mapping active polymer interactions to passive systems.
  • To explore the emergence of attractive interactions and conformational changes due to activity.

Main Methods:

  • Simulations of two models: activity embedded in monomer dynamics and passive polymers in an active bath.
  • Analysis of polymer conformational behavior and interaction forces.
  • Development of a phase diagram to illustrate conformational transitions.

Main Results:

  • Active fluctuations can induce strong attractive interactions between polymers.
  • Polymers aggregate into double-stranded structures under specific conditions.
  • A phase diagram reveals transitions in polymer conformational behavior.

Conclusions:

  • Active baths can drive significant changes in polymer interactions, leading to self-assembly.
  • The study provides insights into non-equilibrium polymer physics and potential applications in active matter systems.