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All Outputs (18)

Artificial life models in hardware (2009)
Book
Komosinski, M., Adamatzky, A., Ieropoulos, I., Greenman, J., Melhuish, C., & Horsfield, I. (2009). A. Adamatzky, & M. Komosinski (Eds.), Artificial life models in hardware. London: Spinger-Verlag. https://doi.org/10.1007/978-1-84882-530-7

Hopping, climbing and swimming robots, nano-size neural networks, motorless walkers, slime mould and chemical brains - 'Artificial Life Models in Hardware' offers unique designs and prototypes of life-like creatures in conventional hardware and hybri... Read More about Artificial life models in hardware.

Artificial symbiosis in EcoBots (2009)
Book Chapter
Ieropoulos, I. A., Greenman, J., Melhuish, C., & Horsfield, I. (2009). Artificial symbiosis in EcoBots. In A. Adamatzky, & M. Komosinski (Eds.), Artificial Life Models in Hardware (185-211). London: Springer. https://doi.org/10.1007/978-1-84882-530-7_9

Truly autonomous robotic systems will be required to abstract energy from the environment in order to function. Energetic autonomy refers to the ability of an agent, to maintain itself in a viable state for long periods of time. Its behaviour must be... Read More about Artificial symbiosis in EcoBots.

Reaction-diffusion controllers for robots (2009)
Book Chapter
Adamatzky, A., de Lacy Costello, B., & Yokoi, H. (2009). Reaction-diffusion controllers for robots. In A. Adamatzky, & M. Komosinski (Eds.), Artificial Life Models in Hardware (233-264). London: Springer Verlag. https://doi.org/10.1007/978-1-84882-530-7_11

Excitable systems, particularly spatially extended media, exhibit a wide variety of travelling patterns and different modes of interaction. The Belousov-Zhabo-tinsky [1] (BZ) reaction is the most well known and extensively studied example of non-line... Read More about Reaction-diffusion controllers for robots.

Genetic approaches to search for computing patterns in cellular automata (2009)
Journal Article
Sapin, E., Bull, L., & Adamatzky, A. (2009). Genetic approaches to search for computing patterns in cellular automata. IEEE Computational Intelligence Magazine, 4(3), 20-28. https://doi.org/10.1109/MCI.2009.933097

The emergence of collision based computing in complex systems with local interactions is discussed. Simulations of logic gates have been inspired by the simulation of an AND gate by the Game of Life. The evolutionary algorithm is also used to modify... Read More about Genetic approaches to search for computing patterns in cellular automata.

Experimental validation of binary collisions between wave fragments in the photosensitive Belousov-Zhabotinsky reaction (2009)
Journal Article
Toth, R., Stone, C., Adamatzky, A., de Lacy Costello, B., & Bull, L. (2009). Experimental validation of binary collisions between wave fragments in the photosensitive Belousov-Zhabotinsky reaction. Chaos, Solitons and Fractals, 41(4), 1605-1615. https://doi.org/10.1016/j.chaos.2008.07.001

We present experimental verification of wave fragment collisions in the sub-excitable Belousov-Zhabotinsky medium observed previously in simulation [Adamatzky A, De Lacy Costello B. Binary collisions between wave fragments in a sub-excitable Belousov... Read More about Experimental validation of binary collisions between wave fragments in the photosensitive Belousov-Zhabotinsky reaction.

Experimental validation of binary collisions between wave fragments in the photosensitive Belousov–Zhabotinsky reaction (2009)
Journal Article
Toth, R., Stone, C., Adamatzky, A., de Lacy Costello, B., & Bull, L. (2009). Experimental validation of binary collisions between wave fragments in the photosensitive Belousov–Zhabotinsky reaction. Chaos, Solitons and Fractals, 41(4), 1605-1615. https://doi.org/10.1016/j.chaos.2008.07.001

Using the examples of an excitable chemical system (the Belousov–Zhabotinsky medium) and plasmodium of Physarum polycephalum we show that universal computation in a geometrically unconstrained medium is only possible when resources (excitability or c... Read More about Experimental validation of binary collisions between wave fragments in the photosensitive Belousov–Zhabotinsky reaction.

Complex dynamics of cellular automata emerging in chaotic rules (2009)
Presentation / Conference
Martinez, G. J., Adamatzky, A., & Alonso-Sanz, R. (2009, June). Complex dynamics of cellular automata emerging in chaotic rules. Presented at The 3rd International Conference on Complex Systems and Applications, Le Havré University, Normandy, France

We show novel techniques of analysing complex dynamics of cellular automata (CA) with chaotic behaviour. CA are well known computational substrates for studying emergent collective behaviour, complexity, randomness and interaction between order and d... Read More about Complex dynamics of cellular automata emerging in chaotic rules.

Localizations in cellular automata with mutualistic excitation rules (2009)
Journal Article
Adamatzky, A. (2009). Localizations in cellular automata with mutualistic excitation rules. Chaos, Solitons and Fractals, 40(2), 981-1003. https://doi.org/10.1016/j.chaos.2007.08.085

Every cell of two-dimensional cellular automaton with eight-cell neighborhood takes three states: resting, excited and refractory, and updates excited to refractory and refractory to resting states unconditionally. A resting cell excites depending on... Read More about Localizations in cellular automata with mutualistic excitation rules.

Spiral formation and degeneration in heterogeneous excitable media (2009)
Journal Article
Toth, R., De Lacy Costello, B., Stone, C., Masere, J., Adamatzky, A., & Bull, L. (2009). Spiral formation and degeneration in heterogeneous excitable media. Physical Review E, 79(3), 035101(R) (4 pages). https://doi.org/10.1103/PhysRevE.79.035101

Spontaneous spiral formation occurs when an excitation wave is input to a heterogeneous network of low- and high-light-intensity cells projected onto a light-sensitive Belousov-Zhabotinsky reaction. The range of network conditions where spirals form... Read More about Spiral formation and degeneration in heterogeneous excitable media.

If BZ medium did spanning trees these would be the same trees as Physarum built (2009)
Journal Article
Adamatzky, A. (2009). If BZ medium did spanning trees these would be the same trees as Physarum built. Physics Letters A, 373(10), 952-956. https://doi.org/10.1016/j.physleta.2008.12.070

A sub-excitable Belousov-Zhabotinsky (BZ) medium exhibits self-localized wave-fragments which may travel for relatively long time preserving their shape. Using Oregonator model of the BZ medium we imitate foraging behavior of a true slime mold, Physa... Read More about If BZ medium did spanning trees these would be the same trees as Physarum built.

Developing proximity graphs by physarum polycephalum: Does the plasmodium follow the toussaint hierarchy? (2009)
Journal Article
Adamatzky, A. (2009). Developing proximity graphs by physarum polycephalum: Does the plasmodium follow the toussaint hierarchy?. Parallel Processing Letters, 19(1), 105-127. https://doi.org/10.1142/S0129626409000109

Plasmodium of Physarum polycephalum spans sources of nutrients and constructs varieties of protoplasmic networks during its foraging behavior. When the plasmodium is placed on a substrate populated with sources of nutrients, it spans the sources with... Read More about Developing proximity graphs by physarum polycephalum: Does the plasmodium follow the toussaint hierarchy?.

Implementation of glider guns in the light-sensitive Belousov-Zhabotinsky medium (2009)
Journal Article
De Lacy Costello, B., Toth, R., Stone, C., Adamatzky, A., & Bull, L. (2009). Implementation of glider guns in the light-sensitive Belousov-Zhabotinsky medium. Physical Review E, 79(2), 026114. https://doi.org/10.1103/PhysRevE.79.026114

In cellular automata models a glider gun is an oscillating pattern of nonquiescent states that periodically emits traveling localizations (gliders). The glider streams can be combined to construct functionally complete systems of logical gates and th... Read More about Implementation of glider guns in the light-sensitive Belousov-Zhabotinsky medium.

On simultaneous construction of Voronoi diagram and delaunay triangulation by physarum polycephalum (2009)
Journal Article
Adamatzky, A., Shirakawa, T., Gunji, Y. P., & Miyake, Y. (2009). On simultaneous construction of Voronoi diagram and delaunay triangulation by physarum polycephalum. International Journal of Bifurcation and Chaos, 19(9), 3109-3117. https://doi.org/10.1142/S0218127409024682

We experimentally demonstrate that both Voronoi diagram and its dual graph Delaunay triangulation are simultaneously constructed for specific conditions in cultures of plasmodium, a vegetative state of Physarum polycephalum. Every point of a given pl... Read More about On simultaneous construction of Voronoi diagram and delaunay triangulation by physarum polycephalum.

Reaction diffusion computers (2009)
Book
Adamatzky, A., de Lacy Costello, B., & Asai, T. (2009). Reaction diffusion computers. Springer Verlag, London

Chemical tessellations (2009)
Journal Article
de Lacy Costello, B., Jahan, I., Adamatzky, A., & Ratcliffe, N. M. (2009). Chemical tessellations. International Journal of Bifurcation and Chaos, 19(2), 619-622. https://doi.org/10.1142/S0218127409023238

We report a simple set of chemical reactions based on the reaction of a range of metal salts with potassium ferricyanide loaded gels that spontaneously produce complex and colorful tessellations of the plane. These reactions provide a great resource... Read More about Chemical tessellations.