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Origami Inspired Self-assembly of Patterned and Reconfigurable Particles
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Published on: February 4, 2013

Active particles with broken symmetry.

Pawel Romanczuk1, Werner Ebeling, Udo Erdmann

  • 1Max Planck Institute for the Physics of Complex Systems, Nöthnitzer Strasse 38, 01187 Dresden, Germany.

Chaos (Woodbury, N.Y.)
|January 10, 2012
PubMed
Summary
This summary is machine-generated.

This study explores propelling polar active particles with internal motors and asymmetric friction. Such systems offer efficient propulsion for large masses with minimal energy input, showing resonance-driven optimal movement.

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Area of Science:

  • Physics, Soft Matter
  • Statistical Mechanics
  • Active Matter Physics

Background:

  • Active particles exhibit complex behaviors driven by internal energy conversion.
  • Head-tail asymmetry in particles can lead to unique propulsion mechanisms.
  • Understanding friction's role in active matter is crucial for controlling motion.

Purpose of the Study:

  • To analyze the propulsion of a polar active particle with head-tail asymmetry.
  • To investigate the influence of an internal motor and asymmetric friction on particle dynamics.
  • To explore the potential for efficient large-mass propulsion with low energy uptake.

Main Methods:

  • Modeling a polar active particle with an internal motor variable.
  • Incorporating an energy depot to drive the internal motor.
  • Analyzing dynamics under broken friction symmetry relative to the internal degree of freedom.

Main Results:

  • The proposed driving mechanism is advantageous for propelling large masses.
  • The system demonstrates efficient propulsion with low energy uptake from the environment.
  • Resonance phenomena lead to optimal propulsion characteristics.

Conclusions:

  • Head-tail asymmetric active particles can be efficiently driven by internal motors.
  • Broken friction symmetry is a key factor in achieving efficient propulsion.
  • The findings suggest potential applications in micro- and nanomachinery requiring low-energy locomotion.