Title :
Dielectrophoresis of microbioparticles in water with planar and capillary quadrupole electrodes
Author :
Tsukahara, S. ; Watarai, H.
Author_Institution :
Dept. of Chem., Osaka Univ., Japan
Abstract :
Dielectrophoresis of single microbioparticles was measured in a planar quadrupole microelectrode (50 μm or 65 μm in working area radius) with a microscope. Carbon and polystyrene microparticles, yeast cells and DNA molecules (about 40 kbp) were adopted as a sample. Their dielectrophoretic mobilities were analysed quantitatively with their intrinsic and surface conductivity, their permittivities and their sizes as well as the conductivity and permittivity of aqueous media. Using the dielectrophoretic mobilities obtained with the planar quadrupole microelectrode, some instances of the separation performance between the microparticles were demonstrated with a fabricated capillary quadrupole microelectrode (82.5 μm in bore radius) under the field flow fractionation regime.
Keywords :
DNA; bioelectric phenomena; biological techniques; cellular biophysics; electrophoresis; fractionation; microelectrodes; permittivity; reviews; surface conductivity; 50 micron; 65 micron; 82.5 micron; DNA molecules; aqueous media; bore radius; capillary quadrupole electrodes; carbon microparticles; dielectrophoresis; dielectrophoretic mobilities; fabricated capillary quadrupole microelectrode; field flow fractionation regime; intrinsic conductivity; microscope; permittivities; planar quadrupole microelectrode; polystyrene microparticles; separation performance; single microbioparticles; sizes; surface conductivity; water; working area radius; yeast cells;
Journal_Title :
Nanobiotechnology, IEE Proceedings -
DOI :
10.1049/ip-nbt:20031031