Optically-induced dielectrophoretic technology for particles manipulation and separation

The optically-induced dielectrophoretic (ODEP) technology has many advantages such as low light energy (~ 10 2 W/cm 2 ), virtual electrodes, large manipulating area and rapid screening of cells. In this paper, 20 μm polystyrene beads are manipulated by a light circle and concentrated by a variable radius circle. The 10 μm and 40 μm polystyrene beads are successfully separated by a 40 μm light line width with vibrating beveled microfluidic light channels.