{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,1]],"date-time":"2026-04-01T10:24:15Z","timestamp":1775039055911,"version":"3.50.1"},"reference-count":25,"publisher":"MDPI AG","issue":"12","license":[{"start":{"date-parts":[[2015,12,4]],"date-time":"2015-12-04T00:00:00Z","timestamp":1449187200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Magnetic field mapping with micrometric spatial resolution and high sensitivity is a challenging application, and the technological solutions are usually based on large area devices integrating discrete magnetic flux guide elements. In this work we demonstrate a high performance hybrid device with improved field sensitivity levels and small footprint, consisting of a ultra-compact 2D design where nanometric spin valve sensors are inserted within the gap of thin-film magnetic flux concentrators. Pole-sensor distances down to 400 nm are demonstrated using nanofabrication techniques combined with an optimized liftoff process. These 100 \u00d7 100 \u03bcm                                                      2                                  pixel sensors can be integrated in modular devices for surface mapping without moving parts.<\/jats:p>","DOI":"10.3390\/s151229809","type":"journal-article","created":{"date-parts":[[2015,12,9]],"date-time":"2015-12-09T07:06:30Z","timestamp":1449644790000},"page":"30311-30318","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":14,"title":["Ultra-Compact 100 \u00d7 100 \u03bcm2 Footprint Hybrid Device with Spin-Valve Nanosensors"],"prefix":"10.3390","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8419-2967","authenticated-orcid":false,"given":"Diana","family":"Leitao","sequence":"first","affiliation":[{"name":"INESC-MN - Instituto de Engenharia de Sistemas e Computadores - Microsistemas e Nanotecnologias and IN - Institute of Nanoscience and Nanotechnology, Rua Alves Redol 9, Lisboa 1000-029, Portugal"},{"name":"Instituto Superior T\u00e9cnico, Universidade de Lisboa, Av. Rovisco Pais, Lisboa 1000, Portugal"}]},{"given":"Paulo","family":"Coelho","sequence":"additional","affiliation":[{"name":"INESC-MN - Instituto de Engenharia de Sistemas e Computadores - Microsistemas e Nanotecnologias and IN - Institute of Nanoscience and Nanotechnology, Rua Alves Redol 9, Lisboa 1000-029, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5622-7760","authenticated-orcid":false,"given":"Jerome","family":"Borme","sequence":"additional","affiliation":[{"name":"INL - International Iberian Nanotechnology Laboratory, Av. Mestre Jos\u00e9 Veiga, 4715 Braga, Portugal"}]},{"given":"Simon","family":"Knudde","sequence":"additional","affiliation":[{"name":"INESC-MN - Instituto de Engenharia de Sistemas e Computadores - Microsistemas e Nanotecnologias and IN - Institute of Nanoscience and Nanotechnology, Rua Alves Redol 9, Lisboa 1000-029, Portugal"},{"name":"Instituto Superior T\u00e9cnico, Universidade de Lisboa, Av. Rovisco Pais, Lisboa 1000, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6913-6529","authenticated-orcid":false,"given":"Susana","family":"Cardoso","sequence":"additional","affiliation":[{"name":"INESC-MN - Instituto de Engenharia de Sistemas e Computadores - Microsistemas e Nanotecnologias and IN - Institute of Nanoscience and Nanotechnology, Rua Alves Redol 9, Lisboa 1000-029, Portugal"},{"name":"Instituto Superior T\u00e9cnico, Universidade de Lisboa, Av. Rovisco Pais, Lisboa 1000, Portugal"}]},{"given":"Paulo","family":"Freitas","sequence":"additional","affiliation":[{"name":"INESC-MN - Instituto de Engenharia de Sistemas e Computadores - Microsistemas e Nanotecnologias and IN - Institute of Nanoscience and Nanotechnology, Rua Alves Redol 9, Lisboa 1000-029, Portugal"},{"name":"INL - International Iberian Nanotechnology Laboratory, Av. 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