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

Deformable self-propelled particles.

Takao Ohta1, Takahiro Ohkuma

  • 1Department of Physics, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan. takao@scphys.kyoto-u.ac.jp

Physical Review Letters
|June 13, 2009
PubMed
Summary
This summary is machine-generated.

This study introduces a theory for self-propelled, deformable particles. At higher speeds, their motion shifts from straight paths to circular trajectories, influencing collective behavior.

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Area of Science:

  • Physics
  • Soft Matter Physics
  • Theoretical Physics

Background:

  • Existing models often assume spherical, undeformable self-propelled particles.
  • Understanding particle deformation is crucial for complex emergent behaviors.

Purpose of the Study:

  • To develop a theoretical framework for deformable self-propelled particles.
  • To investigate the influence of particle deformation on individual and collective motion.
  • To explore the conditions leading to changes in particle trajectory.

Main Methods:

  • Developed a coupled set of equations for particle velocity and deformation tensor.
  • Introduced a numerical simulation in two dimensions.
  • Applied a global interaction favoring orientational order for elongated particles.

Main Results:

  • Demonstrated that finite velocity allows particle deformation from a circular shape.
  • Observed a velocity-dependent bifurcation from straight to circular motion.
  • Showcased numerical evidence of orientational ordering in assemblies of elongated particles.

Conclusions:

  • Particle deformability significantly alters self-propelled dynamics.
  • Velocity-induced shape changes can lead to distinct motion patterns.
  • Global interactions promote collective orientational order in deformable particle systems.