Consejo Superior De Investigaciones Cientificas

Fabrica Nacional De Moneda Y Timbre-real Casa De La Moneda

Universitat De Valéncia

Innceinnmat, S.l.

Esther Enríquez Pérez

José Francisco Fernández Lozano

Vicente García Juez

Alberto Moure Arroyo

Fernando Rubio Marcos

Rocío Estefanía Rojas Hernández

Lara Antón Ibáñez

Victor Fuertes De La Llave

Víctor Fuertes De La Llave

María GONZÁLEZ BÉJAR

ÁNgel Miguel LÓPEZ BUENDÍA

Julia PÉREZ Prieto

Néstor Luis ESTÉBANEZ Bloem

María Del Mar Urquiola Casas

Rocío Estefanía Rojas HERNÁNDEZ

The present invention relates to a security marker; a method of preparing same; the use of said security marker; a security article, document, or element comprising said marker; the use of said security article, document, or element; an object of value comprising said marker; a method of preparing said security article, document, or element or said object of value; a method for determining the authenticity of said security article, document, or element or said object of value; and a system for determining the authenticity of said security article, document, or element or said object of value.

Raman markers

The present invention relates to a nanostructured phosphorescent pigment comprising an AlOsubstrate; MAlO:X nanocrystals, where M is a cation selected from Ca, Sr, Ba, Mg, Znand combinations thereof and where X is a cation selected from Eu, Dy, Nd, Er, La, Lu, Ce, Y, Gd, Tb, Tm, Yband combinations thereof, disposed on the AlOsubstrate; and nanocrystals of molten salt disposed on the MAlO:X nanocrystals. Additionally, the invention relates to a method for preparing the nanostructured phosphorescent pigment of the invention comprising the steps of i) mixing starting materials comprising a cation M precursor, a cation X precursor, AlOand a molten salt; ii) heating the mixture resulting from step (i) in reducing atmosphere. The invention also relates to the use of the nanostructured phosphorescent pigment of the invention for signaling, illumination, decoration or authentication and to a security article comprising the nanostructured phosphorescent pigment of the invention.

Nanostructured phosphorescent pigment and uses thereof

Growing community of inventors

Madrid, Spain

Esther Enríquez Pérez