Magnetic trap of a reaction zone

Rafael M. Digilov*, M. Sheintuch

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


The reaction of ethylene glycol oxidation catalyzed by a colloidal suspension of iron oxide nanoparticles was monitored by IR thermography under an inhomogeneous magnetic field (with a spatial gradient ~50 T2 m). The interaction of a reaction zone with the gradient magnetic field, in a way that the reaction zone could be trapped and manipulated at a desired position with the aid of the magnetic field effect, has been discovered. We explain this phenomenon by the magnetic buoyancy force arising from the variation in the magnetic susceptibility between the reaction zone and rest solution during the catalyzed redox process. These observations suggest the potential use magnetic fields for controlling chemical processes by the long-time localization of the reaction zone from the environment and enables complex problem solving to be performed in physics, chemistry, biology, chemical engineering, nanotechnology, and medicine.

Original languageEnglish
Article number082507
Pages (from-to)1-3
Number of pages3
JournalApplied Physics Letters
Issue number8
StatePublished - 21 Feb 2005
Externally publishedYes


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