The binary photopolymerizable fluorescent droplets to prepare the dual mechanochromic time integrators consist of a nematic liquid crystal (LC, E7), a photopolymerizable diacrylate (1,6-hexanediol diacrylate, HDDA), a photoinitiator (Irgacure 819), an inhibitor (2,6-di-tert-butyl-4-methylphenol, BHT), and a fluorescent donor dye (DFSB-K160, λabs = 442 nm, λem = 508 nm, LC1) or acceptor dye (Lumogen F Red 305, λabs = 560 nm, λem = 618 nm, LC2) respectively (Figure 1a, Figure S1, and Table S1).
