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DEP spectrum of latex microspheres obtained from data given in Ref. 4. Straight and dashed lines refer, respectively, to the real and imaginary parts of the Clausius–Mossotti factor. Colors refer to different values of particle volume fraction (see legend).
Snapshots taken at times 1, 2, 3, and 4 s (from upper to lower) regarding the time evolution of particle volume fraction (color field) and particle trajectories. The color bar on the right gives the correspondence between colors and values of . Particles and fluid enter from the left (initial fluid velocity of ) where at the boundary is fixed to 0.3, in the other boundaries we employ the condition for Eq. (9). Electrodes (in number of 10) are separated from the fluid by a silicon layer thick and they are taken at a voltage of 0 or in a alternate sequence (see Ref. 5).
An enlarged portion of snapshot at of Fig. 2. The color field represents the particle volume fraction at the surroundings of an electrode where reaches its maximum value. Abscissa and ordinate are spatial coordinates. In the inner panel the cross-section, taken just above the red region at of the Clausius–Mossotti factor as a function of the ordinate is shown, colors of the curves refer to the same times of the snapshots of Fig. 2 (see legend).
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