| 摘要 |
PROBLEM TO BE SOLVED: To provide a disposable inexpensive, safe and compact demarcation microchip constituted by mounting a fine particle demarcation processing means in a microchip and enabling stable demarcation processing without requiring skill, and a demarcation device. SOLUTION: A pressure chamber also used as a flow channel is provided to the electromechanical transducer overlying the microchip and developed as the function of a pump or a valve to realize miniaturization. The volume of the chamber is increased and decreased by bending a wall surface in a shearing mode to change a flow. The pressure chamber is provided to a flow channel symmetrically after branching and the chamber is driven by push-pull operation so as to aim a moment when fine particles arrive at a branch point to precisely control a flow direction. Further, a piezoelectric body of a lamination structure (chevron structure) is used to realize high-speed operation as the microchip. COPYRIGHT: (C)2007,JPO&INPIT
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