Magnetic trap of a reaction zone

Digilov, Rafael M.; Sheintuch, M.
February 2005
Applied Physics Letters;2/21/2005, Vol. 86 Issue 8, p082507
Academic Journal
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.


Related Articles

  • Convectively stable pressure profile in magnetic confinement systems with internal rings. Tsventoukh, M. // Plasma Physics Reports;Jun2010, Vol. 36 Issue 6, p462 

    A convectively stable pressure profile in a long multiple-mirror (corrugated) magnetic confinement system with internal current-carrying rings is calculated. The plasma energy content in the axial region can be increased by using an internal ring that reverses the on-axis magnetic field...

  • Inelastic collisions of cold polar molecules in nonparallel electric and magnetic fields. Abrahamsson, E.; Tscherbul, T. V.; Krems, R. V. // Journal of Chemical Physics;7/28/2007, Vol. 127 Issue 4, p044302 

    The authors present a detailed study of low-temperature collisions between CaD molecules and He atoms in superimposed electric and magnetic fields with arbitrary orientations. Electric fields do not interact with the electron spin of the molecules directly but modify their rotational structure...

  • Definitive number of atoms on demand: Controlling the number of atoms in a few-atom magneto-optical trap. Seokchan Yoon; Youngwoon Choi; Sangbum Park; Jaisoon Kim; Jai-Hyung Lee; Kyungwon An // Applied Physics Letters;5/22/2006, Vol. 88 Issue 21, p211104 

    A few 85Rb atoms were trapped in a micron-size magneto-optical trap with a high quadrupole magnetic-field gradient and the number of atoms was precisely controlled by suppressing stochastic loading and loss events via real-time feedback on the magnetic-field gradient. The measured occupation...

  • Capture-emission process in double Poole–Frenkel well traps: Theory and experiments. Chang, C. Y.; Hsu, W. C.; Wang, S. J.; Hau, S. S. // Journal of Applied Physics;8/1/1986, Vol. 60 Issue 3, p1042 

    Focuses on a study which examined the field-dependent capture-emission process for double Poole-Frenkel well traps. Model of the two-Poole-Frenkel well trap; Sample preparation; Discussion; Conclusion.

  • Three designs for a magnetic trap that will simultaneously confine neutral atoms and a non-neutral plasma. Dubin, Daniel H. E. // Physics of Plasmas;Oct2001, Vol. 8 Issue 10 

    Three trap designs are proposed for the simultaneous confinement of neutral atoms and a non-neutral plasma in close proximity. One design uses axially symmetric static magnetic fields with a magnetic minimum in a ring around the trap axis. Axial symmetry is required for confinement of the...

  • Transport of a quantum degenerate heteronuclear Bose-Fermi mixture in a harmonic trap. Klempt, C.; Henninger, T.; Topic, O.; Will, J.; Falke, St.; Ertmer, W.; Arlt, J. // European Physical Journal D -- Atoms, Molecules, Clusters & Opti;Oct2008, Vol. 48 Issue 1, p121 

    We report on the simultaneous transport of mixed quantum degenerate gases of bosonic 87Rb and fermionic 40 K in a harmonic potential. The samples are transported over a distance of $6~{\rm mm}$ to the geometric center of a Ioffe-Pritchard type magnetic trap. This transport mechanism was...

  • Large atom number Bose-Einstein condensate of sodium. van der Stam, K. M. R.; van Ooijen, E. D.; Meppelink, R.; Vogels, J. M.; van der Straten, P. // Review of Scientific Instruments;Jan2007, Vol. 78 Issue 1, p013102 

    We describe the setup to create a large Bose-Einstein condensate containing more than 120×106 atoms. In the experiment a thermal beam is slowed by a Zeeman slower and captured in a dark-spot magneto-optical trap (MOT). A typical dark-spot MOT in our experiments contains 2.0×1010 atoms...

  • Plasma confinement time in trimix-M galatea multipole magnetic trap. Bishaev, A.; Bugrova, A.; Kozintseva, M.; Lipatov, A.; Sigov, A.; Kharchevnikov, V. // Technical Physics Letters;May2010, Vol. 36 Issue 5, p487 

    The confinement time of hydrogen plasma trapped in a Trimix-M magnetic multipole galatea was studied in a range of plasma densities (1 × 1016 − 6 × 1018 m−3) and ion energies (∼100–300 eV). It is established that (i) the confinement time increases with decreasing...

  • Antihydrogen from merged plasmas — cold enough to trap? Madsen, Niels // AIP Conference Proceedings;2006, Vol. 862 Issue 1, p164 

    The merging of antiprotons with a positron plasma is the predominant and highest efficient method for cold antihydrogen formation used to date. We present experimental evidence that this method has serious disadvantages for producing antihydrogen cold enough to be trapped. Antihydrogen is...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics