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Bead detection (130nm in diameter) was performed using both sensors leading to a detection limit of 3\u00d7108particles\u2215ml for SV and 3\u00d71010particles\u2215ml for MTJ.<\/jats:p>","DOI":"10.1063\/1.2836713","type":"journal-article","created":{"date-parts":[[2008,2,14]],"date-time":"2008-02-14T17:17:34Z","timestamp":1203009454000},"update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":32,"title":["Detection of 130nm magnetic particles by a portable electronic platform using spin valve and magnetic tunnel junction sensors"],"prefix":"10.1063","volume":"103","author":[{"given":"F. A.","family":"Cardoso","sequence":"first","affiliation":[{"name":"INESC Microsistemas e Nanotecnologias (INESC MN) 1 , Rua Alves Redol 9, 1000-029 Lisbon, Portugal"},{"name":"Instituto Superior T\u00e9cnico (IST) 2 , Av. Rovisco Pais, 1000-029 Lisbon, Portugal"}]},{"given":"J.","family":"Germano","sequence":"additional","affiliation":[{"name":"Instituto Superior T\u00e9cnico (IST) 2 , Av. Rovisco Pais, 1000-029 Lisbon, Portugal"},{"name":"INESC Investiga\u00e7\u00e3o e Desenvolvimento (INESC ID) 4 , Rua Alves Redol 9, 1000-029 Lisbon, Portugal"}]},{"given":"R.","family":"Ferreira","sequence":"additional","affiliation":[{"name":"INESC Microsistemas e Nanotecnologias (INESC MN) 1 , Rua Alves Redol 9, 1000-029 Lisbon, Portugal"},{"name":"Instituto Superior T\u00e9cnico (IST) 2 , Av. Rovisco Pais, 1000-029 Lisbon, Portugal"}]},{"given":"S.","family":"Cardoso","sequence":"additional","affiliation":[{"name":"INESC Microsistemas e Nanotecnologias (INESC MN) 1 , Rua Alves Redol 9, 1000-029 Lisbon, Portugal"},{"name":"Instituto Superior T\u00e9cnico (IST) 2 , Av. Rovisco Pais, 1000-029 Lisbon, Portugal"}]},{"given":"V. C.","family":"Martins","sequence":"additional","affiliation":[{"name":"INESC Microsistemas e Nanotecnologias (INESC MN) 1 , Rua Alves Redol 9, 1000-029 Lisbon, Portugal"},{"name":"Instituto Superior T\u00e9cnico Av. Rovisco Pais 3 Center for Biological and Chemical Engineering (CEBQ), , 1000-029 Lisbon, Portugal"}]},{"given":"P. P.","family":"Freitas","sequence":"additional","affiliation":[{"name":"INESC Microsistemas e Nanotecnologias (INESC MN) 1 , Rua Alves Redol 9, 1000-029 Lisbon, Portugal"},{"name":"Instituto Superior T\u00e9cnico (IST) 2 , Av. Rovisco Pais, 1000-029 Lisbon, Portugal"}]},{"given":"M. S.","family":"Piedade","sequence":"additional","affiliation":[{"name":"Instituto Superior T\u00e9cnico (IST) 2 , Av. 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