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The levitation of lone live cells by means of dielectrophorectic force provides a means of determining the relative polarization of the cells and their aqueous support medium. When done over a range of frequencies, a spectrum of dielectric (polarization) responses is obtained which serves to characterize a single living cell. In this manner, individual cells of several microorganisms, Saccharomyces...
The behavior of particles in a combined gravitational and nonuniform electric field is used to produce separations of materials having different dielectric constants. This paper describes recent improvements to the apparatus previously used for the continuous separations of physical mixtures. The separatory operation consists of passing the finely divided material through a pair of diverging electrodes...
Some of the more interesting effects of non-uniform electric fields are described in this report. Experimental and theoretical studies show the effects to be rather striking for particles larger than molecular size. The results show that the effect can be used to produce a fairly efficient pumping action of non-conducting liquids, to cause continuous and easily measureable separations in coarse suspensions,...
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