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In article number 1804644, Jun-Cheng Zhang, Jianrong Qiu, and co-workers develop highly integrated stimuli-responsive luminophors via multiplexing of dual lanthanides in piezoelectric particles, which can respond to thermo-mechano-opto-stimuli by bitemporal colorful luminescence. The versatile luminophors are particularly suitable for embedding into polymer films to achieve waterproof, flexible, and highly stretchable features, and synchronously to provide multidimensional codes that enable visual readout using simple and common tools, leading to promising applications in anticounterfeiting technology and information security.
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Zhang et al. (2018) studied this question.
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