Physarum boats: if plasmodium sailed it would never leave a port

  • Authors:
  • Andrew Adamatzky

  • Affiliations:
  • University of the West of England, Bristol BS16 1QY, United Kingdom

  • Venue:
  • Applied Bionics and Biomechanics
  • Year:
  • 2010

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Abstract

Plasmodium of Physarum polycephalum is a single huge visible by naked eye cell with a myriad of nuclei. The plasmodium is a promising substrate for non-classical, nature-inspired computing devices. It is capable of approximation of the shortest path in a maze, computation of planar proximity graphs and plane tessellations, primitive memory and decision making. The unique properties of the plasmodium make it an ideal candidate for a role of amorphous biological robots with massive parallel information processing and distributed inputs and outputs. We show that when adhered to a lightweight object resting on a water surface the plasmodium can propel the object by oscillating its protoplasmic pseudopodia. In experimental laboratory conditions and computational experiments we study phenomenology of the plasmodium-floater system, and possible mechanisms of controlling motion of objects propelled by on-board plasmodium.