Issue Date: November 6, 2017
Making invisible inks more invisible
Invisible inks based on “smart” fluorescent materials have been shining brightly (if only you could see them) in the data-encryption/decryption arena lately. Researchers have debuted various organic dyes, nanocrystals, and other materials to help keep confidential information secure and to develop anticounterfeiting strategies. But some of the materials are costly or difficult to prepare, and many of these inks remain somewhat visible when illuminated with ambient or ultraviolet light. Liang Li and coworkers at Shanghai . . .
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- Chemical & Engineering News
- ISSN 0009-2347
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