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Nanoparticle Arrays: Biotemplated Magnetic Nanoparticle Arrays (Small 2/2012)
Author(s) -
Galloway Johanna M.,
Bramble Jonathan P.,
Rawlings Andrea E.,
Burnell Gavin,
Evans Stephen D.,
Staniland Sarah S.
Publication year - 2012
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201290007
Subject(s) - biomineralization , magnetotactic bacteria , magnetosome , materials science , nanotechnology , nanoparticle , magnetic nanoparticles , template , nanomaterials , ferrimagnetism , nanoscopic scale , magnetite , chemical engineering , magnetization , magnetic field , physics , quantum mechanics , engineering , metallurgy
A biomineralization protein from magnetotactic bacteria (Mms6) used to control both the formation and location of magnetic nanoparticles in a patterned array. Mms6 immobilized on a patterned surface templates high‐quality, crystalline magnetite particles with a narrow grainsize distribution and consistent magnetic behavior under relatively mild conditions. These particles are ferrimagnetic and may be exchange‐coupled on the surface, forming multiparticle attraction/repulsion zones. The biomineralization of nanomaterials in patterned arrays on surfaces using various specific proteins and peptides with templating ability could be used as a more environmentally friendly methodology to develop micro‐ and nanoscale devices.