Micromag 2000, S.l.

Universidad Complutense De Madrid

Consejo Superior De Investigaciones Cientificas

Antonio Hernando Grande

Pilar Marin Palacios

Daniel Cortina Blanco

Javier Calvo Robledo

Guillermo Rivero Rodriguez

María Pilar Marin Palacios

Ainhoa Gonzalez Gorriti

M' Asunción Fernandez Camacho

Rocio Litran Ramos

Teresa Cristina Rojas Ruiz

Juan Carlos Sanchez Lopez

Patricia Crespo Del Arco

Blanca Sampedro Rozas

José Juan Gómez Rebolledo

Pedro Antonio Agudo Madurga

Fernando Briones Fernandez Pola

Masuncion Fernandez Camacho

The present invention describes a tag comprising a magnetic element in the form of a microwire of 80-250 microns with giant magnetoimpedance which, when joined to an object, allows for the wireless detection of same by modulating the reflectivity of the microwire. Detection is performed by using a system that emits an electromagnetic wave that has a frequency between 1 and 20 GHz and a low frequency magnetic field (0.01-50 Hz), and detects the modulation of the reflectivity of the microwire. Thus, objects at distances greater than 1 m can be detected.

Tag system and method for long-distance detection of objects

The present invention relates to a paint with metallic microwires, to the process for integrating metallic microwires to obtain such paint, and to a process for applying said paint on metallic surfaces (). The process for applying paint is performed in several steps:

Paint with metallic microwires, process for integrating metallic microwires in paint and process for applying said paint on metallic surfaces

The invention relates to nanoparticles of noble metals, having a controlled microstructure which leads to the appearance of ferromagnetic behaviour in said nanoparticles, thereby enabling the use of very small magnets (&#x3c;5 nm) in a range in which standard ferromagnetic metals behave as superparamagnetic entitles (disappearance of hysteresis cycle). The inventive nanoparticles can be used, for example, to reduce the dimensions in magnetic recordings, as well as in biomedicine as tools for biomolecule recognition, nuclear magnetic resonance imaging, drug-release control or hypothermia treatments.

Magnetic nanoparticles comprising a core formed from noble metals

A method and system for the characterization of a magnetic element based on ferromagnetic resonance, the magnetic element presents ferromagnetic resonance and its own characteristic resonance frequency. The system includes mechanism for application of a low-frequency electromagnetic field in a given area; a mechanism for application of a high-frequency electromagnetic wave the same as the characteristic resonance frequency of the magnetic element in the same area; and a control unit configured so as to control the simultaneous application of the low-frequency electromagnetic field so that in response to the introduction of the magnetic element in the area the magnetic element absorbs the high-frequency electromagnetic wave with a frequency the same as that of the low-frequency electromagnetic field, so the wave is modulated. The system also comprises a mechanism for reception of this unique individual modulated wave characteristic of each element, and a mechanism for assignment of the unique modulated wave to the element.

Method and system for the individualized characterization of magnetic elements based on ferromagnetic resonance

The invention relates to an electromagnetic radiation absorber for a preselected frequency range, comprising:

Electromagnetic radiation absorber based on magnetic microwires

An amorphous microwire coated with an insulating sleeve, composed of a metal core made up of an alloy of transition metals and metalloid elements, at a proportion between 65%&#x2013;90% and 10%&#x2013;35%, respectively, and an insulating glass sleeve, the transition metals are at least iron, the relative proportion of iron being between 65%&#x2013;100% of the total transition metals, and the core diameter (Dc) is comprised between 2 &#x3bc;m and 20 &#x3bc;m, such that the magnetostriction constant (&#x3bb;) of the metal alloy is comprised between 1 and 30 ppm, and the natural ferromagnetic resonance frequency is comprised between 3 and 20 GHz. The invention also refers to a method for the manufacture of an amorphous microwire.

Amorphous microwire and method for manufacture thereof

Current system for compensating the magnetic field produced by electric traction railways

Growing community of inventors

Madrid, Spain

Antonio Hernando Grande