Security element

Security element

The invention relates to a security element for value or security documents comprising markers made up of a plurality of nanoparticles of at least two types, wherein a first type is a hollow nanoparticle provided therein with at least another nanoparticle of a second type having smaller dimensions....

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Gamo Aranda, Javier, Varela Garcia De Oteyza, Paloma, Ruiz Quevedo, Andrés
Format: Patent
Sprache:eng ; fre ; ger
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Beschreibung
Zusammenfassung:The invention relates to a security element for value or security documents comprising markers made up of a plurality of nanoparticles of at least two types, wherein a first type is a hollow nanoparticle provided therein with at least another nanoparticle of a second type having smaller dimensions. The markers thus simultaneously meet the geometric, particularly surface, and physicochemical conditions necessary for their detection.