The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 15, 2014
Filed:
Apr. 22, 2009
Riccardo Bertacco, Morazzone, IT;
Paolo Vavassori, Ferrara, IT;
Riccardo Bertacco, Morazzone, IT;
Paolo Vavassori, Ferrara, IT;
Politecnico di Milano, Milan, IT;
Abstract
A sensor is described for detecting the presence of a magnetic nanoparticle (N). The sensor is arranged on a support (), on which a plurality of non-magnetic contacts (Iin, GND, V, V) electrically conductively connected to the sensor is disposed. The contacts are adapted to be connected to means for measuring magnetoresistance. The sensor includes a planar ferromagnetic nanostructure (), comprising a detection area () shaped as a strip bent to form a corner. The detection area is adapted to selectively assume, as a response to an applied magnetic field, a first spin configuration comprising a transverse 'head-to-head' domain wall (TW), and a second spin configuration, wherein such domain wall (TW) is absent. The transition from the first configuration to the second configuration is affected by the proximity of a magnetic nanoparticle (N) to the detection area.