Migration Analysis of Micro-Particles in Liquids Using Microscopically Designed External Fields

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Abstract

The recent development of new migration methods of micro-particles in liquids using various external fields is reviewed. The combination of a laser scattering force and a photothermal effect produced photothermal-conversion laser-photophoresis. A dielectric field generated in a planer or a capillary quadrupole electrode realized dielectrophoresis. Using a micrometer-scaled magnetic field gradient, the “Magnetophoretic velocimetry” of micro-particles was invented. Furthermore, the Lorentz force generated by combining an electric field and a magnetic field was utilized for electromagnetophoresis. These new methods were overlooked and the advantages in analytical use were discussed.

Journal

  • Analytical Sciences

    Analytical Sciences 20 (3), 423-434, 2004

    The Japan Society for Analytical Chemistry

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