Patent ID: 8864972

Claim:
A dielectrophoresis apparatus comprising: a case for being filled with a dielectric solution and for admitting a small target body that includes a dielectric portion; an electrode device consisting of a pair of electrodes, between which an alternating voltage is applied, for forming within said case a non-uniform alternating electric field that produces at least one stable equilibrium point in relation to balance between a dielectrophoretic force acting upon the small target object inside said case and a force ascribable to gravity and buoyancy; and a tilting mechanism for holding said case and said electrode device at a titled orientation, wherein said tilting mechanism comprises a first member holding said case and said electrode device, a second member for pivotably supporting said first member, and means for holding said first member in an oblique state with respect to said second member, and wherein mutually opposing sides of said pair of electrodes in said electrode device are in line symmetry with respect to a center line between the electrodes of the pair, portions of the electrodes of the pair being narrowly spaced apart and other portions curving in such a manner that the electrode spacing gradually increases.