{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,16]],"date-time":"2025-10-16T20:06:31Z","timestamp":1760645191035,"version":"3.41.2"},"reference-count":10,"publisher":"AIP Publishing","issue":"8","content-domain":{"domain":["pubs.aip.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2006,4,15]]},"abstract":"<jats:p>Magnetoresistive biochips have been recently introduced for the detection of biomolecular recognition. In this work, the detection site incorporates a thin-film diode in series with a magnetic tunnel junction (MTJ), leading to a matrix-based biochip that can be easily scaled up to screen large numbers of different target analytes. The fabricated 16\u00d716 cell matrix integrates hydrogenated amorphous silicon (a-Si:H) diodes with aluminum oxide barrier MTJ. Each detection site also includes a U-shaped current line for magnetically assisted target concentration at probe sites. The biochip is being integrated in a portable, credit card size electronics control platform. Detection of 250nm diameter magnetic nanoparticles by one of the matrix cells is demonstrated.<\/jats:p>","DOI":"10.1063\/1.2165148","type":"journal-article","created":{"date-parts":[[2006,6,12]],"date-time":"2006-06-12T16:13:20Z","timestamp":1150128800000},"update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":29,"title":["Diode\/magnetic tunnel junction cell for fully scalable matrix-based biochip"],"prefix":"10.1063","volume":"99","author":[{"given":"F. A.","family":"Cardoso","sequence":"first","affiliation":[{"name":"INESC-Microsystems and Nanotechnologies , Rua Alves Redol 9, 1000-029 Lisbon, Portugal and , Avenida Rovisco Pais, 1000-029 Lisbon, Portugal"},{"name":"Instituto Superior T\u00e9cnico , Rua Alves Redol 9, 1000-029 Lisbon, Portugal and , Avenida Rovisco Pais, 1000-029 Lisbon, Portugal"}]},{"given":"H. A.","family":"Ferreira","sequence":"additional","affiliation":[{"name":"INESC-Microsystems and Nanotechnologies , Rua Alves Redol 9, 1000-029 Lisbon, Portugal and , Avenida Rovisco Pais, 1000-029 Lisbon, Portugal"},{"name":"Instituto Superior T\u00e9cnico , Rua Alves Redol 9, 1000-029 Lisbon, Portugal and , Avenida Rovisco Pais, 1000-029 Lisbon, Portugal"}]},{"given":"J. P.","family":"Conde","sequence":"additional","affiliation":[{"name":"INESC-Microsystems and Nanotechnologies , Rua Alves Redol 9, 1000-029 Lisbon, Portugal and , Avenida Rovisco Pais, 1000-029 Lisbon, Portugal"},{"name":"Instituto Superior T\u00e9cnico , Rua Alves Redol 9, 1000-029 Lisbon, Portugal and , Avenida Rovisco Pais, 1000-029 Lisbon, Portugal"}]},{"given":"V.","family":"Chu","sequence":"additional","affiliation":[{"name":"INESC-Microsystems and Nanotechnologies , Rua Alves Redol 9, 1000-029 Lisbon, Portugal"}]},{"given":"P. P.","family":"Freitas","sequence":"additional","affiliation":[{"name":"INESC-Microsystems and Nanotechnologies , Rua Alves Redol 9, 1000-029 Lisbon, Portugal and , Avenida Rovisco Pais, 1000-029 Lisbon, Portugal"},{"name":"Instituto Superior T\u00e9cnico , Rua Alves Redol 9, 1000-029 Lisbon, Portugal and , Avenida Rovisco Pais, 1000-029 Lisbon, Portugal"}]},{"given":"D.","family":"Vidal","sequence":"additional","affiliation":[{"name":"INESC-Microsystems and Nanotechnologies , Rua Alves Redol 9, 1000-029 Lisbon, Portugal and , Avenida Rovisco Pais, 1000-029 Lisbon, Portugal"},{"name":"Instituto Superior T\u00e9cnico , Rua Alves Redol 9, 1000-029 Lisbon, Portugal and , Avenida Rovisco Pais, 1000-029 Lisbon, Portugal"}]},{"given":"J.","family":"Germano","sequence":"additional","affiliation":[{"name":"Instituto Superior T\u00e9cnico , Avenida Rovisco Pais, 1000-029 Lisbon, Portugal and , Rua Alves Redol 9, 1000-029 Lisbon, Portugal"},{"name":"INESC-Investiga\u00e7\u00e3o e Desenvolvimento , Avenida Rovisco Pais, 1000-029 Lisbon, Portugal and , Rua Alves Redol 9, 1000-029 Lisbon, Portugal"}]},{"given":"L.","family":"Sousa","sequence":"additional","affiliation":[{"name":"Instituto Superior T\u00e9cnico , Avenida Rovisco Pais, 1000-029 Lisbon, Portugal and , Rua Alves Redol 9, 1000-029 Lisbon, Portugal"},{"name":"INESC-Investiga\u00e7\u00e3o e Desenvolvimento , Avenida Rovisco Pais, 1000-029 Lisbon, Portugal and , Rua Alves Redol 9, 1000-029 Lisbon, Portugal"}]},{"given":"M. S.","family":"Piedade","sequence":"additional","affiliation":[{"name":"Instituto Superior T\u00e9cnico , Avenida Rovisco Pais, 1000-029 Lisbon, Portugal and , Rua Alves Redol 9, 1000-029 Lisbon, Portugal"},{"name":"INESC-Investiga\u00e7\u00e3o e Desenvolvimento , Avenida Rovisco Pais, 1000-029 Lisbon, Portugal and , Rua Alves Redol 9, 1000-029 Lisbon, Portugal"}]},{"given":"B. A.","family":"Costa","sequence":"additional","affiliation":[{"name":"Instituto Superior T\u00e9cnico , Avenida Rovisco Pais, 1000-029 Lisbon, Portugal and , Rua Alves Redol 9, 1000-029 Lisbon, Portugal"},{"name":"INESC-Investiga\u00e7\u00e3o e Desenvolvimento , Avenida Rovisco Pais, 1000-029 Lisbon, Portugal and , Rua Alves Redol 9, 1000-029 Lisbon, Portugal"}]},{"given":"J. M.","family":"Lemos","sequence":"additional","affiliation":[{"name":"Instituto Superior T\u00e9cnico , Avenida Rovisco Pais, 1000-029 Lisbon, Portugal and , Rua Alves Redol 9, 1000-029 Lisbon, Portugal"},{"name":"INESC-Investiga\u00e7\u00e3o e Desenvolvimento , Avenida Rovisco Pais, 1000-029 Lisbon, Portugal and , Rua Alves Redol 9, 1000-029 Lisbon, Portugal"}]}],"member":"317","published-online":{"date-parts":[[2006,4,19]]},"reference":[{"volume-title":"Magnetoelectronics","year":"2004","author":"Johnson","key":"2023070101012754300_c1"},{"key":"2023070101012754300_c2","doi-asserted-by":"publisher","first-page":"455","DOI":"10.1016\/j.tibtech.2004.06.006","volume":"22","year":"2004","journal-title":"Trends Biotechnol."},{"key":"2023070101012754300_c3","doi-asserted-by":"publisher","first-page":"209","DOI":"10.1016\/S0924-4247(03)00380-7","volume":"107","year":"2003","journal-title":"Sens. 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