P
Paulo P. Freitas
Researcher at Instituto Superior Técnico
Publications - 682
Citations - 15650
Paulo P. Freitas is an academic researcher from Instituto Superior Técnico. The author has contributed to research in topics: Magnetoresistance & Magnetization. The author has an hindex of 59, co-authored 667 publications receiving 13777 citations. Previous affiliations of Paulo P. Freitas include Centro Hospitalar de Vila Nova de Gaia/Espinho & Instituto Português de Oncologia Francisco Gentil.
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Magnetoresistive-based biosensors and biochips.
TL;DR: This detection platform provides a robust, inexpensive sensing technique with high sensitivity and considerable scope for quantitative signal data, enabling magnetoresistive biochips to meet specific diagnostic needs that are not met by existing technologies.
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Opportunities and challenges for spintronics in the microelectronics industry
Bernard Dieny,Ioan Lucian Prejbeanu,Kevin Garello,Pietro Gambardella,Paulo P. Freitas,R. Lehndorff,Wolfgang Raberg,Ursula Ebels,Sergej O. Demokritov,Johan Åkerman,Johan Åkerman,Alina M. Deac,Philipp Pirro,Christoph Adelmann,Abdelmadjid Anane,Andrii V. Chumak,Andrii V. Chumak,Atsufumi Hirohata,Stéphane Mangin,Sergio O. Valenzuela,Sergio O. Valenzuela,M. Cengiz Onbaşlı,Massimiliano d'Aquino,Guillaume Prenat,Giovanni Finocchio,Luis Lopez-Diaz,Roy W. Chantrell,Oksana Chubykalo-Fesenko,P. Bortolotti +28 more
TL;DR: In this article, the potential of spintronics in four key areas of application (memory, sensors, microwave devices, and logic devices) is examined and the challenges that need to be addressed in order to integrate spintronic materials and functionalities into mainstream microelectronic platforms.
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Biodetection using magnetically labeled biomolecules and arrays of spin valve sensors (invited)
TL;DR: On-chip spin-valve sensors were used to detect the binding of streptavidin-functionalized superparamagnetic labels to sensor surface-bound biotin and the detection of biomolecular recognition was demonstrated using 2 μm Micron-sized and 250 nm Nanomag®-D labels.
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Femtosecond control of electric currents in metallic ferromagnetic heterostructures
T.J. Huisman,Rostislav Mikhaylovskiy,J. D. Costa,Frank Freimuth,Elvira Paz,João Ventura,Paulo P. Freitas,Stefan Blügel,Yuriy Mokrousov,Th. Rasing,Alexey Kimel +10 more
TL;DR: Using terahertz (10(12) Hz) emission spectroscopy and exploiting the spin-orbit interaction, this work demonstrates the optical generation of electric photocurrents in metallic ferromagnetic heterostructures at the femtosecond timescale.
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Single magnetic microsphere placement and detection on-chip using current line designs with integrated spin valve sensors: Biotechnological applications
TL;DR: Superparamagnetic labels, 400 nm dextran iron oxide particles and 2 μm polymer encapsulated iron oxide microspheres, with biomolecules immobilized on the surface, were controllably placed on chip sites using tapered Al current lines and moved to and from adjacent spin valve sensors using magnetoresistance (MR).