Security Element for Sensitive Documents and a Sensitive Document

摘要

The present invention is the security element for sensitive documents characterized in that it includes at least one graphene layer arranged on a polymer layer where the graphene layer is heterogeneous and forms a pattern characterized by different levels of absorption of electromagnetic radiation, especially infrared radiation, visible light radiation or ultraviolet light passing through the pattern at its various points.

主权项

1. A security element for a document, comprising: a nanocomposite layer comprising at least one graphene layer arranged on a polymer layer, wherein the graphene layer is heterogeneous, and forms a pattern characterized by a plurality of different levels of absorption of electromagnetic radiation, the electromagnetic radiation selected from a group consisting of: an infrared radiation, a visible light, and an ultraviolet radiation.