Consejo Superior De Investigaciones Cientificas

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

Nanogap Sub-nm Powder, Sociedad Anonima

Vicente García Juez

Manuel Arturo Lopez Quintela

Maurizio Lazzerini

José Francisco Fernández Lozano

Esther Enríquez Pérez

Javier Gamo Aranda

Juan José Romero Fanego

Andrés Ruiz Quevedo

Fernando Rubio Marcos

Israel Lorite Villalba

Alberto Moure Arroyo

Rocío Estefanía Rojas Hernández

Miguel Ángel Rodríguez Barbero

Lara Antón Ibáñez

Antonio Olmos

Victor Fuertes De La Llave

Luis Borruel Navarro

Víctor Fuertes De La Llave

Rocío Estefanía Rojas HERNÁNDEZ

Miguel ÁNgel RODRÍGUEZ Barbero

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

The present invention relates to the use of non deactivable security markers comprising the combination of at least two types of nanoparticles of materials presenting Raman effect, wherein said nanoparticles are in a dispersed state or is forming agglomerates of between 2 and 500 nanoparticles. The invention also relates to security documents, articles or elements incorporating these markers, as well as to a method and system for the detection thereof.

Use of Raman markers for authenticating security documents

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Madrid, Spain

Vicente García Juez