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Atomic force microscopy and transmission electron microscopy of biocompatible magnetic fluids: A comparative analysis |
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| Authors: | Silva LP Lacava ZGM Buske N Morais PC Azevedo RB |
| Institution: | (1) Instituto de Ciências Biológicas, Departamento de Genética e Morfologia, Universidade de Brasília, 70910-900 Brasília-DF, Brazil;(2) Berlin Heart AG, Wiesenweg 10, D-12247 Berlin, Germany;(3) Instituto de Física, Núcleo de Física Aplicada, Universidade de Brasília, 70919-970 Brasília-DF, Brazil |
| Abstract: | The present study provides a comparative analysis of the size dispersity of magnetic nanoparticles (MNPs) within magnetic fluids as obtained from atomic force microscopy (AFM) and transmission electron microscopy (TEM). Whereas the mean particle diameter obtained from the AFM data presented a reduction of about 34% as compared to the value obtained from the TEM data, the standard deviation obtained from the AFM data is twice the value found from the TEM data. Similarities and differences in the size dispersity parameters are discussed in terms of sample preparation and tip characteristics. A two-dimensional mode for the deposition of the MNPs on top of the mica substrate is discussed as well. |
| Keywords: | Atomic force microscopy electron microscopy magnetic fluid magnetic nanoparticle |
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