This paper reports on cell and microparticle manipulation using optically induced dielectrophoresis. Our novel
optoelectronic tweezers (OET) device enables optically controlled
trapping, transportation, and sorting via dielectrophoretic forces.
By integrating a spatial light modulator and using direct imaging, arbitrary dynamic manipulation patterns are obtained. Here,
we demonstrate manipulation functions, including particle collectors, single-particle traps, individually addressable single-particle
arrays, light-defined particle channels, and size-based particle
sorting. OET-induced particle manipulation velocities are analyzed as a function of the applied voltage, optical pattern linewidth,
and single-particle trap dimensions.