Configurable NOR gate arrays from Belousov-Zhabotinsky micro-droplets A.L. Wang, J.M. Gold, N. Tompkins, M. Heymann, K.I. Harrington and S. Fraden Eur. Phys. J. Special Topics, 225 1 (2016) 211-227 Published online: 29 February 2016 DOI: 10.1140/epjst/e2016-02622-y