Abstract: Provided is a dielectrophoresis apparatus with which it is possible to handle (move, stop, separate and sort, etc.) a dielectric particle utilizing dielectrophoresis and to measure dielectrophoretic force. The interior of a dielectrophoresis device that includes a case having a flat top or bottom surface is filled with a dielectric solution S and accepts introduction of a small target body (particle) P comprising a dielectric. A non-uniform alternating electric field is formed within the case. By tilting the case (through an angle ?pitch or other direction), rotating the case in an inclined plane (through a rotational angle ?yaw) or adjusting the voltage and frequency of the alternating electric field, imbalance or balance is produced between a dielectrophoretic force FDEP that acts upon the small body and a force FG sin ?pitch ascribable to gravity and buoyancy, thereby enabling the small body to be moved and stopped.

Abstract: Provided is a dielectrophoresis apparatus with which it is possible to handle (move, stop, separate and sort, etc.) a dielectric particle utilizing dielectrophoresis and to measure dielectrophoretic force. The interior of a dielectrophoresis device that includes a case having a flat top or bottom surface is filled with a dielectric solution S and accepts introduction of a small target body (particle) P comprising a dielectric. A non-uniform alternating electric field is formed within the case. By tilting the case (through an angle ?pitch or other direction), rotating the case in an inclined plane (through a rotational angle ?yaw) or adjusting the voltage and frequency of the alternating electric field, imbalance or balance is produced between a dielectrophoretic force FDEP that acts upon the small body and a force FG sin ?pitch ascribable to gravity and buoyancy, thereby enabling the small body to be moved and stopped.