Multi-way invisible fluorescent ink anti-fake label with different patterns
A fluorescent ink and anti-counterfeiting label technology, which is applied in the field of invisible fluorescent ink anti-counterfeiting labels, can solve the problems of difficult imitation and high imitation difficulty, and achieve the effect of high concealment and easy identification
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[0044] Example one:
[0045] In this example, an invisible fluorescent ink anti-counterfeiting label structure with multi-directional and different patterns is as follows figure 1 Shown. From bottom to top, it includes liner layer 11, fluorescent ink layer 12, fluorescent ink layer two 13, prism glass layer 14, photonic crystal layer 15 and photonic crystal layer two 16. In this example, photonic crystal layer 15 and The second photonic crystal layer 16 is respectively coated on the same parallel surface of the prism glass layer 14 by physical vapor deposition, and is distributed in a periodic shape.
[0046] Such as figure 2 As shown, the photonic crystal layer 15 is made of MgF 2 And ZrO 2 Composition, of which MgF 2 The thickness is 40 nanometers, ZrO 2 The thickness of the two materials is 30 nanometers, and the two materials are distributed according to the quasi-periodic Fibonacci sequence (FB sequence for short), and the structure is as image 3 Shown.
[0047] The band gap ...
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