METHOD OF PROTECTING DOCUMENTS, SECURITIES OR ARTICLES BY USING SEMICONDUCTOR FILAMENTARY NANOCRYSTALS Russian patent published in 2017 - IPC G06K7/10 B82B1/00 

FIELD: physics.

SUBSTANCE: in the method, a label is placed in or into the security document, security paper or article containing semiconductor filamentary nanocrystals with the predetermined parameters that can be detected by using various detecting devices. The heterostructured filamentary nanocrystals thus obtained are made on the basis of a combination of materials with different forbidden bands, as well as structures with a combined dimension such as quantum dots inside the filamentary nanocrystals, which will ensure that these documents can be encoded by using them, as well as the simplicity of verification.

EFFECT: increasing the security of these documents and articles and simplifying the procedure for the authenticity verification.

4 cl, 2 dwg