| Summary: | 碩士 === 國立交通大學 === 電子物理系所 === 105 === Laser induced breakdown has been widely applied in laser processing, laser-induced breakdown spectroscopy and so on. In this thesis, we utilize a pulse mode-locked Q-switched Nd:YAG laser to induce the water breakdown. We studied the bubbles change in the closed chamber and to apply in the designed asymmetric microfluid to drive the fluid. According to the experimental results, we obtained when the channel becomes smaller and the higher the laser output energy, the bubble flow rate will be faster and the bubble oscillation frequency will be smaller. In addition, this thesis successfully used 3D-printed to make asymmetric microfluid and PDMS mold to achieve the purpose of rapid production and lower cost. Through knife-edge measurement to find the laser damage threshold of various materials. It is expected that can be applied to laser-induced water actuator, replacing micro-electromechanical motors that can not change the drive position immediately .
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