The European Physical Journal Special Topics

, Volume 225, Issue 1, pp 211–227 | Cite as

Configurable NOR gate arrays from Belousov-Zhabotinsky micro-droplets

  • A.L. Wang
  • J.M. Gold
  • N. Tompkins
  • M. Heymann
  • K.I. Harrington
  • S. Fraden
Regular Article Synchronization, Control and Dynamics of Chaotic Models
Part of the following topical collections:
  1. Synchronization and Control in Time-Delayed Complex Networks and Spatio-Temporal Patterns


We investigate the Belousov–Zhabotinsky (BZ) reaction in an attempt to establish a basis for computation using chemical oscillators coupled via inhibition. The system consists of BZ droplets suspended in oil. Interdrop coupling is governed by the non-polar communicator of inhibition, Br2. We consider a linear arrangement of three droplets to be a NOR gate, where the center droplet is the output and the other two are inputs. Oxidation spikes in the inputs, which we define to be TRUE, cause a delay in the next spike of the output, which we read to be FALSE. Conversely, when the inputs do not spike (FALSE) there is no delay in the output (TRUE), thus producing the behavior of a NOR gate. We are able to reliably produce NOR gates with this behavior in microfluidic experiment.


Chaotic System European Physical Journal Special Topic Malonic Acid Input Delay HOBr 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© EDP Sciences and Springer 2016

Authors and Affiliations

  • A.L. Wang
    • 1
  • J.M. Gold
    • 1
  • N. Tompkins
    • 1
  • M. Heymann
    • 3
  • K.I. Harrington
    • 2
  • S. Fraden
    • 1
  1. 1.Department of PhysicsBrandeis UniversityWalthamUSA
  2. 2.Center for Vascular Biology Research, Beth Israel Deaconess Medical Center, Harvard Medical SchoolBostonUSA
  3. 3.Center for Free Electron Laser Science, Deutsches Elektronen Synchrotron DESYHamburgGermany

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