Slime mould logical gates: exploring ballistic approach
University of the West of England, Bristol, United Kingdomandrew.adamatzky@uwe.ac.ukAbstractPlasmodium of Physarum polycephalum is a single cell visible by unaided eye. On anon-nutrient substrate the plasmodium propagates as a traveling localization, as acompact wave-fragment of protoplasm. The plasmodium-localization travels in itsoriginally predetermined direction for a substantial period of time even when nogradient of chemo-attractants is present. We utilize this property of Physarum lo-calizations to design a two-input two-output Boolean logic gates hx;yi!hxy;x+yiand hx;yi!hx;xyi. We verify the designs in laboratory experiments and computersimulations. We cascade the logical gates into one-bit half-adder and simulate itsfunctionality.Keywords: Physarum polycephalum, logical gate, adder, unconventional computer,chemical computer, biological computer