Premium
Enhanced Magnetic Resonance Contrast of Fe 3 O 4 Nanoparticles Trapped in a Porous Silicon Nanoparticle Host
Author(s) -
Kinsella Joseph M.,
Ananda Shalini,
Andrew Jennifer S.,
Grondek Joel F.,
Chien MiaoPing,
Scadeng Miriam,
Gianneschi Nathan C.,
Ruoslahti Erkki,
Sailor Michael J.
Publication year - 2011
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201101877
Subject(s) - materials science , nanoparticle , coercivity , porous silicon , nuclear magnetic resonance , porosity , magnetic nanoparticles , composite number , resonance (particle physics) , magnetization , dipole , magnetic resonance imaging , nanotechnology , condensed matter physics , composite material , magnetic field , physics , quantum mechanics , medicine , chemistry , organic chemistry , particle physics , radiology
A composite material consisting of Fe 3 O 4 nanoparticles embedded in a 200 nm‐diameter porous Si (pSi) nanoparticle “superstructure” is prepared as a potential magnetic resonance imaging contrast agent. Dipolar magnetic coupling between Fe 3 O 4 nanoparticles is enhanced due to their proximity in the pSi host matrix, resulting in an increase in the saturation magnetization and coercivity of the composite.