Fig. 6: Potential application of CPL information encryption through a 3D barcode with tunable PL and CPL in BTA/phol/Ag6/AgxCu6−x LHSs.
a, b Schematic showing a barcode with standard ASCII characters and encrypted PL and CPL with different wavelengths of UV light (λex = 365 nm/400 nm) for information encryption. c, d Normalized PL and CPL spectra of the bars (a–g) with different wavelengths of UV light (λex = 365 nm/400 nm).
