Abstract
In the past, most of the studies employed positive dielectrophoresis (p-DEP) on two-dimensional electrodes to induce attraction forces for micro-objects sorting. [1,2] However, due to the rapid decrease of the strong non-linear electrical field, the effective working distance is greatly limited, as shown in Fig. 1, the p-DEP is only effective within 3~6μm. Therefore, this study adopts the concept of Deterministic Lateral Displacement (DLD) incorporated with negative dielectrophoresis (n-DEP) forces to enhance the lateral displacement of objects to achieve high efficient separation. This design can also solve the problem of the stiction of objects on electrodes when using p-DEP.