Magnetic trap of a reaction zone

TY - JOUR

T1 - Magnetic trap of a reaction zone

AU - Digilov, Rafael M.

AU - Sheintuch, M.

N1 - Funding Information: This work was supported by the Israel Ministry of Absorption and Immigration. The authors would like to thank Professor R. Semiat and Dr. G. Zelmanov for supplying and preparing the colloidal suspension of iron oxide nanoparticles.

PY - 2005/2/21

Y1 - 2005/2/21

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=17044397332&partnerID=8YFLogxK

U2 - 10.1063/1.1871341

DO - 10.1063/1.1871341

M3 - 文章

AN - SCOPUS:17044397332

SN - 0003-6951

VL - 86

SP - 1

EP - 3

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 8

M1 - 082507

ER -