Investigation of optical driving mechanism of highly-efficient metalized microtrubine and its application

2014 Fiscal Year Final Research Report

• Project/Area Number: 25630089
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Intelligent mechanics/Mechanical systems
• Research Institution: Yokohama National University
• Principal Investigator: MARUO Shoji 横浜国立大学, 工学(系)研究科(研究院), 教授 (00314047)
• Project Period (FY): 2013-04-01 – 2015-03-31
• Keywords: 光ピンセット / マイクロ光造形 / マイクロマシン / ラボオンチップ

Outline of Final Research Achievements

In this study, we investigated the highly-efficient optical driving mechanism of a metalized microturbine. In experiments, we observed the temperature distribution around the metalized microstructure when a laser beam was irradiated. As a result, we confirmed the temperature of the surrounding liquid around the metalized microstructure was increased as the laser power was increased. In addition, the temperature increase and resultant flow generation were analyzed by multiphysics simulation. As a result, we confirmed the simulation results were similar to the experimental results. By analyzing the flow generated by the temperature increase, we found that the flow is too low to rotate the microturbine. We guess that surface tension due to temperature increase will be dominant to rotate the microturbine. Finally we demonstrated that a novel type of microtubine like a spinning top. The spinning-top microrotor was fabricated and rotated at high speed over 550 rmp at a ultralow laser power.

Free Research Field

3次元微細加工