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A snake-like robot gets trapped in aperiodic obstacle fields, similar to how quantum waves localize. This reveals a surprising link between classical and quantum wave localization phenomena.

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Area of Science:

  • Physics
  • Robotics
  • Complex Systems

Background:

  • Transport of deformable, self-propelling objects in complex environments is not well understood.
  • Previous work on wave localization in disordered potentials provides a theoretical framework.

Purpose of the Study:

  • To investigate the motion of a snake-like robot through heterogeneous environments.
  • To explore the connection between classical active matter transport and quantum wave localization phenomena.

Main Methods:

  • Experimental study of a snake-like robot navigating an obstacle array.
  • Computational simulation and theoretical modeling using resistive force theory.
  • Comparison with Aubry-André (AA) potential and Anderson localization models.

Main Results:

  • Robots pass through periodic obstacle arrays but become trapped in sufficiently aperiodic ones.
  • Localization transition observed, characterized by exponential distributions of robot position.
  • Transition linked to fluctuations in self-propulsion torques.

Conclusions:

  • Aperiodic landscapes can impede the transport of active, deformable objects.
  • Unexpected parallels exist between quantum wave localization and classical active matter transport.
  • Findings bridge quantum mechanics, classical mechanics, and active matter physics.