Optical evidence of magnetic field-induced ferrofluid aggregation: Comparison of cobalt ferrite, magnetite, and magnesium ferrite
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2019
Authors
Lakić, MladenAnđelković, Ljubica
Šuljagić, Marija
Vulić, Predrag
Perić, Marko R.
Iskrenović, Predrag
Krstić, Ivan
Kuraica, Milorad M.
Nikolić, Aleksandar S.
Article (Published version)
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Light-transmitting measurements of white light and a consequentially chosen laser beam of 655 nm propagating through citrate- and oleate-coated CoFe 2 O 4 , FeFe 2 O 4 and MgFe 2 O 4 nanoparticles under the influence of an external magnetic field were presented. New experimental settings were developed for the optical study of ferrites’ behavior in ferrofluid with the applied magnetic field strength within the 30–400 mT range. A magnetic field-induced change of light transmittance occurred and a precipitation of all studied samples was obtained. Optical investigations of ferrofluid suspensions revealed that, contrary to the linear aggregates of colloidal CoFe 2 O 4 and FeFe 2 O 4 , spheroidal aggregates were formed in the case of MgFe 2 O 4 . In all three cases, the surface modification resulted in decreased dipole–dipole interactions between ferrite cores, and thus, less precipitates were noticed. All oleate-coated nanoparticles have demonstrated weaker magnetic responses compared to ...the citrate-encapsulated samples. The aggregation of nanoparticles potentially increases cytotoxicity. Regarding non-linear clustering of MgFe 2 O 4 suspensions, it can be concluded that its excretion from the organism may likely be easier and faster when used in diagnosis and/or therapy. Therefore, more attention should be paid to the lowly toxic MgFe 2 O 4 regarding its medical application. © 2019
Keywords:
Aggregation / External magnetic field / Ferrofluid / Hard and soft ferrites / Spectral analysisSource:
Optical Materials, 2019, 91, 279-285Funding / projects:
- Rational design and synthesis of biologically active and coordination compounds and functional materials, relevant for (bio)nanotechnology (RS-MESTD-Basic Research (BR or ON)-172035)
- Diagnostics and Optimization of Plasma Sources Important for Applications (RS-MESTD-Basic Research (BR or ON)-171034)
DOI: 10.1016/j.optmat.2019.03.031
ISSN: 0925-3467
WoS: 000470938800040
Scopus: 2-s2.0-85063323726
URI
https://linkinghub.elsevier.com/retrieve/pii/S0925346719301995https://vinar.vin.bg.ac.rs/handle/123456789/8114
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VinčaTY - JOUR AU - Lakić, Mladen AU - Anđelković, Ljubica AU - Šuljagić, Marija AU - Vulić, Predrag AU - Perić, Marko R. AU - Iskrenović, Predrag AU - Krstić, Ivan AU - Kuraica, Milorad M. AU - Nikolić, Aleksandar S. PY - 2019 UR - https://linkinghub.elsevier.com/retrieve/pii/S0925346719301995 UR - https://vinar.vin.bg.ac.rs/handle/123456789/8114 AB - Light-transmitting measurements of white light and a consequentially chosen laser beam of 655 nm propagating through citrate- and oleate-coated CoFe 2 O 4 , FeFe 2 O 4 and MgFe 2 O 4 nanoparticles under the influence of an external magnetic field were presented. New experimental settings were developed for the optical study of ferrites’ behavior in ferrofluid with the applied magnetic field strength within the 30–400 mT range. A magnetic field-induced change of light transmittance occurred and a precipitation of all studied samples was obtained. Optical investigations of ferrofluid suspensions revealed that, contrary to the linear aggregates of colloidal CoFe 2 O 4 and FeFe 2 O 4 , spheroidal aggregates were formed in the case of MgFe 2 O 4 . In all three cases, the surface modification resulted in decreased dipole–dipole interactions between ferrite cores, and thus, less precipitates were noticed. All oleate-coated nanoparticles have demonstrated weaker magnetic responses compared to the citrate-encapsulated samples. The aggregation of nanoparticles potentially increases cytotoxicity. Regarding non-linear clustering of MgFe 2 O 4 suspensions, it can be concluded that its excretion from the organism may likely be easier and faster when used in diagnosis and/or therapy. Therefore, more attention should be paid to the lowly toxic MgFe 2 O 4 regarding its medical application. © 2019 T2 - Optical Materials T1 - Optical evidence of magnetic field-induced ferrofluid aggregation: Comparison of cobalt ferrite, magnetite, and magnesium ferrite VL - 91 SP - 279 EP - 285 DO - 10.1016/j.optmat.2019.03.031 ER -
@article{ author = "Lakić, Mladen and Anđelković, Ljubica and Šuljagić, Marija and Vulić, Predrag and Perić, Marko R. and Iskrenović, Predrag and Krstić, Ivan and Kuraica, Milorad M. and Nikolić, Aleksandar S.", year = "2019", abstract = "Light-transmitting measurements of white light and a consequentially chosen laser beam of 655 nm propagating through citrate- and oleate-coated CoFe 2 O 4 , FeFe 2 O 4 and MgFe 2 O 4 nanoparticles under the influence of an external magnetic field were presented. New experimental settings were developed for the optical study of ferrites’ behavior in ferrofluid with the applied magnetic field strength within the 30–400 mT range. A magnetic field-induced change of light transmittance occurred and a precipitation of all studied samples was obtained. Optical investigations of ferrofluid suspensions revealed that, contrary to the linear aggregates of colloidal CoFe 2 O 4 and FeFe 2 O 4 , spheroidal aggregates were formed in the case of MgFe 2 O 4 . In all three cases, the surface modification resulted in decreased dipole–dipole interactions between ferrite cores, and thus, less precipitates were noticed. All oleate-coated nanoparticles have demonstrated weaker magnetic responses compared to the citrate-encapsulated samples. The aggregation of nanoparticles potentially increases cytotoxicity. Regarding non-linear clustering of MgFe 2 O 4 suspensions, it can be concluded that its excretion from the organism may likely be easier and faster when used in diagnosis and/or therapy. Therefore, more attention should be paid to the lowly toxic MgFe 2 O 4 regarding its medical application. © 2019", journal = "Optical Materials", title = "Optical evidence of magnetic field-induced ferrofluid aggregation: Comparison of cobalt ferrite, magnetite, and magnesium ferrite", volume = "91", pages = "279-285", doi = "10.1016/j.optmat.2019.03.031" }
Lakić, M., Anđelković, L., Šuljagić, M., Vulić, P., Perić, M. R., Iskrenović, P., Krstić, I., Kuraica, M. M.,& Nikolić, A. S.. (2019). Optical evidence of magnetic field-induced ferrofluid aggregation: Comparison of cobalt ferrite, magnetite, and magnesium ferrite. in Optical Materials, 91, 279-285. https://doi.org/10.1016/j.optmat.2019.03.031
Lakić M, Anđelković L, Šuljagić M, Vulić P, Perić MR, Iskrenović P, Krstić I, Kuraica MM, Nikolić AS. Optical evidence of magnetic field-induced ferrofluid aggregation: Comparison of cobalt ferrite, magnetite, and magnesium ferrite. in Optical Materials. 2019;91:279-285. doi:10.1016/j.optmat.2019.03.031 .
Lakić, Mladen, Anđelković, Ljubica, Šuljagić, Marija, Vulić, Predrag, Perić, Marko R., Iskrenović, Predrag, Krstić, Ivan, Kuraica, Milorad M., Nikolić, Aleksandar S., "Optical evidence of magnetic field-induced ferrofluid aggregation: Comparison of cobalt ferrite, magnetite, and magnesium ferrite" in Optical Materials, 91 (2019):279-285, https://doi.org/10.1016/j.optmat.2019.03.031 . .