| 摘要 |
PROBLEM TO BE SOLVED: To immobilize the extremely small quantity of probe on a solid phase efficiently without damaging the probe without being influenced by a nozzle diameter. SOLUTION: When a high-frequency alternating voltage is applied selectively to a piezoelectric element 1 from a high-frequency power source control circuit (unillustrated) to generate ultrasonic vibration, the vibration energy is converged on the liquid surface of a liquid reservoir part 4, namely, on the position of a nozzle 5, by a concave lens 2. Therefore, a solution containing the probe in the liquid reservoir part 4 is deformed into a micro-droplet (the droplet size is less than 18μm, preferably, 10μm or less) by the energy converged on the liquid surface, and discharged on a prescribed position on the solid phase through the nozzle 5. |
