Abstract
Flueric devices are fluidic devices without moving parts. Fluidic devices use fluid as a medium for information transfer and computation. A Belousov-Zhabotinsky (BZ) medium is a thin-layer spatially extended excitable chemical medium which exhibits travelling excitation wave-fronts. The excitation wave-fronts transfer information. Flueric devices compute via jets interaction. BZ devices compute via excitation wave-fronts interaction. In numerical model of BZ medium we show that functions of key flueric devices are implemented in the excitable chemical system: signal generator, and, xor, not and nor Boolean gates, delay elements, diodes and sensors. Flueric devices have been widely used in industry since late 1960s and are still employed in automotive and aircraft technologies. Implementation of analog of the flueric devices in the excitable chemical systems opens doors to further applications of excitation wave-based unconventional computing in soft robotics, embedded organic electronics and living technologies.
Highlights
Three designs of interaction-based computing—by using fluid streams, signals propagating along conductors and excitation wave fronts—have been conceived and evolved independently for over half-a-century
The work on using fluids for computation emerged in late 1950s early 1960s with the aim to develop reliable devices without or with minimum electronics components [1,2,3]
The basic principles of the fluidic devices include laminar flow of a fluid, jet interaction, wall attachment, vortex effect and interaction with moving parts
Summary
Three designs of interaction-based computing—by using fluid streams, signals propagating along conductors and excitation wave fronts—have been conceived and evolved independently for over half-a-century. A substantial number of theoretical and experimental laboratory prototypes of computing devices made of BZ medium has been reported in last thirty years They are image processes and memory devices [11,12,13], logical gates implemented in geometrically constrained BZ medium [14, 15], approximation of shortest path by excitation waves [16,17,18], memory in BZ micro-emulsion [13], information coding with frequency of oscillations [19], onboard controllers for robots [20,21,22], chemical diodes [23], neuromorphic architectures [24,25,26, 26,27,28,29] and associative memory [30, 31], wave-based counters [32], and other information processors [33,34,35,36].
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