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Optical Encryption
Both wavelength‐tunable coloration and light intensity‐tunable photoluminescence are independent and reliably manipulated in a rewritable dual‐responsive encryption display based on block copolymer self‐assembly. The display has the benefit of being a direct and intuitive identification of encrypted information by the human eye, enabling high information security and anti‐counterfeiting...
Optical encryption using coloration and photoluminescent (PL) materials can provide highly secure data protection with direct and intuitive identification of encrypted information. Encryption capable of independently controlling wavelength‐tunable coloration as well as variable light intensity PL is not adequately demonstrated yet. Herein, a rewritable PL and structural color (SC) display suitable...