Investigation of the dielectrophoretic properties of parasitic bacteria in emulsion and construction of new separation and detection systems of bacteria

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In the present study, the dielectrophoretic properties of parasitic bacteria in emulsion were investigated, and new separation and measurement apparatus was developed for rapid and simple detection. Optimum electrode arrangement and separation condition from oil droplet were obtained by numerical analyses of electric field distribution in microcell, and dielectrophoretic velocity and trajectory of bacteria. In actual, selective condensation was achieved for various kinds of bacteria. Moreover, the bacterial amount was estimated quantitatively by combination of dielectrophoretic micro filter and LCR meter.