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On hybrid circuits exploiting thermistive properties of slime mould

Walter, Xavier Alexis; Horsfield, Ian; Mayne, Richard; Ieropoulos, Ioannis A.; Adamatzky, Andrew

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Ian Horsfield

Richard Mayne


Slime mould Physarum polycephalum is a single cell visible by the unaided eye. Let the slime mould span two electrodes with a single protoplasmic tube: if the tube is heated to approximately ≈40 °C, the electrical resistance of the protoplasmic tube increases from ≈3 Mω to ≈10,000 Mω. The organisms resistance is not proportional nor correlated to the temperature of its environment. Slime mould can therefore not be considered as a thermistor but rather as a thermic switch. We employ the P. polycephalum thermic switch to prototype hybrid electrical analog summator, NAND gates, and cascade the gates into Flip-Flop latch. Computing operations performed on this bio-hybrid computing circuitry feature high repeatability, reproducibility and comparably low propagation delays.


Ieropoulos, I. A., Walter, X. A., Horsfield, I., Mayne, R., Ieropoulos, I., & Adamatzky, A. (2016). On hybrid circuits exploiting thermistive properties of slime mould. Scientific Reports, 6(23924),

Journal Article Type Article
Acceptance Date Mar 16, 2016
Publication Date Apr 6, 2016
Publicly Available Date Apr 21, 2016
Journal Scientific Reports
Electronic ISSN 2045-2322
Publisher Nature Research (part of Springer Nature)
Peer Reviewed Peer Reviewed
Volume 6
Issue 23924
Keywords hybrid circuits, slime mould
Public URL
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