Artículo
Spatial Resolution in Micrometric Periodic Assemblies of Magnetotactic Bacteria and Magnetic Nanoparticles
Moreno, Alejandro Javier
; González, E.; Godoy, Manuel Santiago
; Pettinari, Maria Julia
; Antonel, Paula Soledad
; Jorge, Guillermo Antonio
; Bekeris, Victoria Isabel
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Fecha de publicación:
08/2013
Editorial:
Institute Of Electrical And Electronics Engineers
Revista:
Ieee Transactions On Magnetics
ISSN:
0018-9464
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
We developed a simple method for obtaining micro arrays of magnetic nanoparticles using audio tapes. We present spatial micro-arrangements of magnetotactic bacteria (Magnetospirillum gryphiswaldense), magnetite (Fe O ) and functionalized cobalt ferrite (CoFe O ) nanoparticles. Computer generated square audio waves of different frequencies (100 Hz-10 kHz) were recorded leading to magnetic patterns of different micrometer spatial wavelengths. Drops of aqueous suspensions were deposited on the tapes to control particle density, and bacteria and particles were trapped at locations where magnetic energy is minimized, as observed using conventional optical microscopy after the dispersium medium was evaporated. We discuss the spatial limits of the magnetic nanoparticles and the bacteria assemblies, concluding that cell walls of bacteria inhibit agglomeration and optimize spatial organization.
Palabras clave:
Magnetic Nanoparticles
,
Magnetic Particle Imaging
,
Magnetic Tapes
,
Magnetite
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Articulos(INQUIMAE)
Articulos de INST.D/QUIM FIS D/L MATERIALES MEDIOAMB Y ENERGIA
Articulos de INST.D/QUIM FIS D/L MATERIALES MEDIOAMB Y ENERGIA
Articulos(IQUIBICEN)
Articulos de INSTITUTO DE QUIMICA BIOLOGICA DE LA FACULTAD DE CS. EXACTAS Y NATURALES
Articulos de INSTITUTO DE QUIMICA BIOLOGICA DE LA FACULTAD DE CS. EXACTAS Y NATURALES
Citación
Moreno, Alejandro Javier; González, E.; Godoy, Manuel Santiago; Pettinari, Maria Julia; Antonel, Paula Soledad; et al.; Spatial Resolution in Micrometric Periodic Assemblies of Magnetotactic Bacteria and Magnetic Nanoparticles; Institute Of Electrical And Electronics Engineers; Ieee Transactions On Magnetics; 49; 8; 8-2013; 4572-4575
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