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  • Title: Information coding with frequency of oscillations in Belousov-Zhabotinsky encapsulated disks.
    Author: Gorecki J, Gorecka JN, Adamatzky A.
    Journal: Phys Rev E Stat Nonlin Soft Matter Phys; 2014 Apr; 89(4):042910. PubMed ID: 24827316.
    Abstract:
    Information processing with an excitable chemical medium, like the Belousov-Zhabotinsky (BZ) reaction, is typically based on information coding in the presence or absence of excitation pulses. Here we present a new concept of Boolean coding that can be applied to an oscillatory medium. A medium represents the logical TRUE state if a selected region oscillates with a high frequency. If the frequency fails below a specified value, it represents the logical FALSE state. We consider a medium composed of disks encapsulating an oscillatory mixture of reagents, as related to our recent experiments with lipid-coated BZ droplets. We demonstrate that by using specific geometrical arrangements of disks containing the oscillatory medium one can perform logical operations on variables coded in oscillation frequency. Realizations of a chemical signal diode and of a single-bit memory with oscillatory disks are also discussed.
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