Photonic Inks with Dual‐Layer Security Features by Encapsulation of Color Tunable Fluorescent Dyes in PMMA Colloidal Microspheres DOI Open Access

Lekshmi Lekshmanan,

Adarsh Sivan Pillai, Meghana Mary Thomas

и другие.

Small Methods, Год журнала: 2024, Номер unknown

Опубликована: Дек. 19, 2024

Abstract To counter economic terrorism by preventing counterfeit currency, documents and high‐value commercial products, new‐generation security inks with multiple safety features are required. Herein, color‐tunable pyrylium pyridinium dye‐encapsulated polymethyl methacrylate (PMMA) colloidal microspheres reported to exhibiting brilliant emission photonic properties. A combination of the PMMA ink having structural color variation fluorescence modulation is used for labeling. The angle‐dependent variations, a remarkable 250‐fold enhancement, non‐toxicity, rare earth‐free formulation have made novel suitable dual‐layer high‐security printing. Covert patterns labels overt under 365 nm UV light, while also color. increased level developed demonstrated screen‐printed images on flexible substrates.

Язык: Английский

Photonic Inks with Dual‐Layer Security Features by Encapsulation of Color Tunable Fluorescent Dyes in PMMA Colloidal Microspheres DOI Open Access

Lekshmi Lekshmanan,

Adarsh Sivan Pillai, Meghana Mary Thomas

и другие.

Small Methods, Год журнала: 2024, Номер unknown

Опубликована: Дек. 19, 2024

Abstract To counter economic terrorism by preventing counterfeit currency, documents and high‐value commercial products, new‐generation security inks with multiple safety features are required. Herein, color‐tunable pyrylium pyridinium dye‐encapsulated polymethyl methacrylate (PMMA) colloidal microspheres reported to exhibiting brilliant emission photonic properties. A combination of the PMMA ink having structural color variation fluorescence modulation is used for labeling. The angle‐dependent variations, a remarkable 250‐fold enhancement, non‐toxicity, rare earth‐free formulation have made novel suitable dual‐layer high‐security printing. Covert patterns labels overt under 365 nm UV light, while also color. increased level developed demonstrated screen‐printed images on flexible substrates.

Язык: Английский

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