Spatial resolution in micrometric periodic assemblies of magnetotactic bacteria and magnetic nanoparticles

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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 3 O 4 ) and functionalized cobalt ferrite (CoFe 2 O 4 ) nanoparticles. Computer gener...

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Autores principales:	Pettinari, María Julia, Antonel, Paula Soledad, Jorge, Guillermo Antonio, Bekeris, Victoria Isabel
Publicado:	2013
Materias:	Magnetic nanoparticles Magnetic particle imaging Magnetic tapes Magnetite Microassembly Microorganisms Aqueous suspensions Magnetic nano-particles Magnetospirillum gryphiswaldense Magnetotactic Bacteria Micro assembly Spatial organization Spatial wavelengths Magnetic tape Magnetite nanoparticles Nanoparticles Suspensions (fluids) Bacteria
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00189464_v49_n8_p4572_Moreno http://hdl.handle.net/20.500.12110/paper_00189464_v49_n8_p4572_Moreno
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_00189464_v49_n8_p4572_Moreno
record_format	dspace
spelling	paper:paper_00189464_v49_n8_p4572_Moreno2025-07-30T17:22:37Z Spatial resolution in micrometric periodic assemblies of magnetotactic bacteria and magnetic nanoparticles Pettinari, María Julia Antonel, Paula Soledad Jorge, Guillermo Antonio Bekeris, Victoria Isabel Magnetic nanoparticles Magnetic particle imaging Magnetic tapes Magnetite Microassembly Microorganisms Aqueous suspensions Magnetic nano-particles Magnetic particle imaging Magnetospirillum gryphiswaldense Magnetotactic Bacteria Micro assembly Spatial organization Spatial wavelengths Magnetic tape Magnetite Magnetite nanoparticles Microorganisms Nanoparticles Suspensions (fluids) Bacteria 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 3 O 4 ) and functionalized cobalt ferrite (CoFe 2 O 4 ) 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. © 1965-2012 IEEE. Fil:Pettinari, J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Antonel, P.S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Jorge, G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Bekeris, V. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2013 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00189464_v49_n8_p4572_Moreno http://hdl.handle.net/20.500.12110/paper_00189464_v49_n8_p4572_Moreno
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Magnetic nanoparticles Magnetic particle imaging Magnetic tapes Magnetite Microassembly Microorganisms Aqueous suspensions Magnetic nano-particles Magnetic particle imaging Magnetospirillum gryphiswaldense Magnetotactic Bacteria Micro assembly Spatial organization Spatial wavelengths Magnetic tape Magnetite Magnetite nanoparticles Microorganisms Nanoparticles Suspensions (fluids) Bacteria
spellingShingle	Magnetic nanoparticles Magnetic particle imaging Magnetic tapes Magnetite Microassembly Microorganisms Aqueous suspensions Magnetic nano-particles Magnetic particle imaging Magnetospirillum gryphiswaldense Magnetotactic Bacteria Micro assembly Spatial organization Spatial wavelengths Magnetic tape Magnetite Magnetite nanoparticles Microorganisms Nanoparticles Suspensions (fluids) Bacteria Pettinari, María Julia Antonel, Paula Soledad Jorge, Guillermo Antonio Bekeris, Victoria Isabel Spatial resolution in micrometric periodic assemblies of magnetotactic bacteria and magnetic nanoparticles
topic_facet	Magnetic nanoparticles Magnetic particle imaging Magnetic tapes Magnetite Microassembly Microorganisms Aqueous suspensions Magnetic nano-particles Magnetic particle imaging Magnetospirillum gryphiswaldense Magnetotactic Bacteria Micro assembly Spatial organization Spatial wavelengths Magnetic tape Magnetite Magnetite nanoparticles Microorganisms Nanoparticles Suspensions (fluids) Bacteria
description	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 3 O 4 ) and functionalized cobalt ferrite (CoFe 2 O 4 ) 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. © 1965-2012 IEEE.
author	Pettinari, María Julia Antonel, Paula Soledad Jorge, Guillermo Antonio Bekeris, Victoria Isabel
author_facet	Pettinari, María Julia Antonel, Paula Soledad Jorge, Guillermo Antonio Bekeris, Victoria Isabel
author_sort	Pettinari, María Julia
title	Spatial resolution in micrometric periodic assemblies of magnetotactic bacteria and magnetic nanoparticles
title_short	Spatial resolution in micrometric periodic assemblies of magnetotactic bacteria and magnetic nanoparticles
title_full	Spatial resolution in micrometric periodic assemblies of magnetotactic bacteria and magnetic nanoparticles
title_fullStr	Spatial resolution in micrometric periodic assemblies of magnetotactic bacteria and magnetic nanoparticles
title_full_unstemmed	Spatial resolution in micrometric periodic assemblies of magnetotactic bacteria and magnetic nanoparticles
title_sort	spatial resolution in micrometric periodic assemblies of magnetotactic bacteria and magnetic nanoparticles
publishDate	2013
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00189464_v49_n8_p4572_Moreno http://hdl.handle.net/20.500.12110/paper_00189464_v49_n8_p4572_Moreno
work_keys_str_mv	AT pettinarimariajulia spatialresolutioninmicrometricperiodicassembliesofmagnetotacticbacteriaandmagneticnanoparticles AT antonelpaulasoledad spatialresolutioninmicrometricperiodicassembliesofmagnetotacticbacteriaandmagneticnanoparticles AT jorgeguillermoantonio spatialresolutioninmicrometricperiodicassembliesofmagnetotacticbacteriaandmagneticnanoparticles AT bekerisvictoriaisabel spatialresolutioninmicrometricperiodicassembliesofmagnetotacticbacteriaandmagneticnanoparticles
_version_	1840323255047553024

Spatial resolution in micrometric periodic assemblies of magnetotactic bacteria and magnetic nanoparticles

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